ma_statement.c

/************************************************************************************
   Copyright (C) 2013,2019 MariaDB Corporation AB
                 2021 SingleStore, Inc.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not see <http://www.gnu.org/licenses>
   or write to the Free Software Foundation, Inc., 
   51 Franklin St., Fifth Floor, Boston, MA 02110, USA
*************************************************************************************/
#include <ma_odbc.h>

#define MADB_MIN_QUERY_LEN 5
// SingleStore imposes a limit on the number of parameters sent in one statement. It is defined by
// the global var parametrizer_query_max_params which defaults to 1048576.q
// TODO: PLAT-6999 respect parametrizer_query_max_params value
#define S2_MAX_PARAMS 1024000


struct st_ma_stmt_methods MADB_StmtMethods; /* declared at the end of file */

/* {{{ MADB_StmtInit */
SQLRETURN MADB_StmtInit(MADB_Dbc *Connection, SQLHANDLE *pHStmt)
{
  MADB_Stmt *Stmt= NULL;

  if (!(Stmt = (MADB_Stmt *)MADB_CALLOC(sizeof(MADB_Stmt))))
    goto error;
 
  MADB_PutErrorPrefix(Connection, &Stmt->Error);
  *pHStmt= Stmt;
  Stmt->Connection= Connection;
 
  LOCK_MARIADB(Connection);

  if (!(Stmt->stmt= MADB_NewStmtHandle(Stmt)) ||
    !(Stmt->IApd= MADB_DescInit(Connection, MADB_DESC_APD, FALSE)) ||
    !(Stmt->IArd= MADB_DescInit(Connection, MADB_DESC_ARD, FALSE)) ||
    !(Stmt->IIpd= MADB_DescInit(Connection, MADB_DESC_IPD, FALSE)) ||
    !(Stmt->IIrd= MADB_DescInit(Connection, MADB_DESC_IRD, FALSE)))
  {
    UNLOCK_MARIADB(Stmt->Connection);
    goto error;
  }

  MDBUG_C_PRINT(Stmt->Connection, "-->inited %0x", Stmt->stmt);
  UNLOCK_MARIADB(Connection);
  Stmt->PutParam= -1;
  Stmt->Methods= &MADB_StmtMethods;
  Stmt->Options.CursorType= SQL_CURSOR_FORWARD_ONLY;
  Stmt->Options.UseBookmarks= SQL_UB_OFF;
  Stmt->Options.MetadataId= Connection->MetadataId;

  Stmt->Apd= Stmt->IApd;
  Stmt->Ard= Stmt->IArd;
  Stmt->Ipd= Stmt->IIpd;
  Stmt->Ird= Stmt->IIrd;
  
  Stmt->ListItem.data= (void *)Stmt;
  EnterCriticalSection(&Stmt->Connection->ListsCs);
  Stmt->Connection->Stmts= MADB_ListAdd(Stmt->Connection->Stmts, &Stmt->ListItem);
  LeaveCriticalSection(&Stmt->Connection->ListsCs);

  Stmt->Ard->Header.ArraySize= 1;

  return SQL_SUCCESS;

error:
  if (Stmt && Stmt->stmt)
  {
    MADB_STMT_CLOSE_STMT(Stmt);
  }
  MADB_DescFree(Stmt->IApd, TRUE);
  MADB_DescFree(Stmt->IArd, TRUE);
  MADB_DescFree(Stmt->IIpd, TRUE);
  MADB_DescFree(Stmt->IIrd, TRUE);
  MADB_FREE(Stmt);
  return SQL_ERROR;
}
/* }}} */

/* {{{ MADB_ExecuteQuery */
SQLRETURN MADB_ExecuteQuery(MADB_Stmt * Stmt, char *StatementText, SQLINTEGER TextLength)
{
  SQLRETURN ret= SQL_ERROR;
  
  LOCK_MARIADB(Stmt->Connection);
  if (StatementText)
  {
    MDBUG_C_PRINT(Stmt->Connection, "mysql_real_query(%0x,%s,%lu)", Stmt->Connection->mariadb, StatementText, TextLength);
    if(!mysql_real_query(Stmt->Connection->mariadb, StatementText, TextLength))
    {
      ret= SQL_SUCCESS;
      MADB_CLEAR_ERROR(&Stmt->Error);

      Stmt->AffectedRows= mysql_affected_rows(Stmt->Connection->mariadb);
    }
    else
    {
      MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_DBC, Stmt->Connection->mariadb);
    }
  }
  else
    MADB_SetError(&Stmt->Error, MADB_ERR_HY001, mysql_error(Stmt->Connection->mariadb), 
                            mysql_errno(Stmt->Connection->mariadb));
  UNLOCK_MARIADB(Stmt->Connection);

  return ret;
}
/* }}} */

/* {{{ MADB_StmtBulkOperations */
SQLRETURN MADB_StmtBulkOperations(MADB_Stmt *Stmt, SQLSMALLINT Operation)
{
  MADB_CLEAR_ERROR(&Stmt->Error);
  switch(Operation)
  {
  case SQL_ADD:
    return Stmt->Methods->SetPos(Stmt, 0, SQL_ADD, SQL_LOCK_NO_CHANGE, 0);
  default:
    return MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, "Operation is not supported", 0);
  }
}
/* }}} */

/* {{{ RemoveStmtRefFromDesc
       Helper function removing references to the stmt in the descriptor when explisitly allocated descriptor is substituted
       by some other descriptor */
void RemoveStmtRefFromDesc(MADB_Desc *desc, MADB_Stmt *Stmt, BOOL all)
{
  if (desc->AppType)
  {
    unsigned int i;
    for (i=0; i < desc->Stmts.elements; ++i)
    {
      MADB_Stmt **refStmt= ((MADB_Stmt **)desc->Stmts.buffer) + i;
      if (Stmt == *refStmt)
      {
        MADB_DeleteDynamicElement(&desc->Stmts, i);

        if (!all)
        {
          return;
        }
      }
    }
  }
}
/* }}} */

/* {{{ ResetMetadata */
void ResetMetadata(MYSQL_RES** metadata, MYSQL_RES* new_metadata)
{
  if (*metadata != NULL)
  {
    mysql_free_result(*metadata);
  }

  *metadata= new_metadata;
}
/* }}} */

/* {{{ MADB_CspsFreeResult
 Frees the result set that was allocated by mysql_store_result for the client-side prepared statements mode. */
void MADB_CspsFreeResult(MADB_Stmt *Stmt, MYSQL_RES** CspsResult, MYSQL_STMT *stmt, my_bool FreeStmtResults)
{
    if (MADB_SSPS_DISABLED(Stmt))
    {
        if (CspsResult && *CspsResult)
        {
            // Set the following fields to NULL, so we're sure they're released only once.
            // Since we're not setting the alloc field, we should not reset it here, because it's being released
            // differently.
            if (stmt) // NULL shouldn't really happen.
            {
                stmt->result.data = NULL;
                stmt->result_cursor = NULL;
                stmt->field_count = 0;
                stmt->fields = NULL;

                if (FreeStmtResults)
                {
                    while(mysql_more_results(stmt->mysql))
                    {
                        mysql_next_result(stmt->mysql);
                    }
                }
            }

            // Free the result and set the ptr to NULL so it does not get released twice.
            mysql_free_result(*CspsResult);
            *CspsResult = NULL;
        }
    }
}
/* }}} */

/* {{{ MADB_CspsCopyResult
 Makes a shallow copy of the result and stores it in the stmt.
 This is relevant only for the client-side prepared statements mode. */
void MADB_CspsCopyResult(MADB_Stmt *Stmt, MYSQL_RES* CspsResult, MYSQL_STMT *stmt)
{
    if (MADB_SSPS_DISABLED(Stmt))
    {
        // Both shouldn't be NULL, but just in case.
        if (CspsResult && stmt)
        {
            // Make a shallow copy of the result.
            // Also move all the metadata to Stmt to reuse it across API calls and avoid potential errors.
            stmt->field_count = mysql_num_fields(CspsResult);
            stmt->fields = mysql_fetch_fields(CspsResult);

            // Currently, we always fetch the whole result set, so all these fields should be there by now.
            if (CspsResult->data)
            {
                // Don't copy alloc, because it will not be used and will be released differently.
                stmt->result.data = CspsResult->data->data;
                stmt->result.fields = CspsResult->data->fields;
                stmt->result.rows = CspsResult->data->rows;
                stmt->result_cursor = CspsResult->data_cursor;
            }
        }
    }
}
/* }}} */

/* {{{ MADB_StmtFree */
SQLRETURN MADB_StmtFree(MADB_Stmt *Stmt, SQLUSMALLINT Option)
{
  if (!Stmt)
    return SQL_INVALID_HANDLE;

  switch (Option) {
  case SQL_CLOSE:
    if (Stmt->stmt)
    {
      if (Stmt->Ird)
        MADB_DescFree(Stmt->Ird, TRUE);
      if (Stmt->State > MADB_SS_PREPARED && !QUERY_IS_MULTISTMT(Stmt->Query))
      {
        MADB_CspsFreeResult(Stmt, &Stmt->CspsResult, Stmt->stmt, TRUE);
        MDBUG_C_PRINT(Stmt->Connection, "mysql_stmt_free_result(%0x)", Stmt->stmt);
        mysql_stmt_free_result(Stmt->stmt);
        LOCK_MARIADB(Stmt->Connection);
        MDBUG_C_PRINT(Stmt->Connection, "-->resetting %0x", Stmt->stmt);
        mysql_stmt_reset(Stmt->stmt);
        UNLOCK_MARIADB(Stmt->Connection);
      }
      if (QUERY_IS_MULTISTMT(Stmt->Query) && Stmt->MultiStmts)
      {
        unsigned int i;
        LOCK_MARIADB(Stmt->Connection);
        for (i=0; i < STMT_COUNT(Stmt->Query); ++i)
        {
          if (Stmt->MultiStmts[i] != NULL)
          {
            MADB_CspsFreeResult(Stmt, &Stmt->CspsMultiStmtResult[i], Stmt->MultiStmts[i], TRUE);
            MDBUG_C_PRINT(Stmt->Connection, "-->resetting %0x(%u)", Stmt->MultiStmts[i], i);
            mysql_stmt_reset(Stmt->MultiStmts[i]);
          }
        }
        UNLOCK_MARIADB(Stmt->Connection);
      }

      ResetMetadata(&Stmt->metadata, NULL);

      MADB_FREE(Stmt->result);
      MADB_FREE(Stmt->CharOffset);
      MADB_FREE(Stmt->Lengths);

      RESET_STMT_STATE(Stmt);
      RESET_DAE_STATUS(Stmt);
    }

    if (Stmt->State == MADB_SS_EMULATED)
    {
      LOCK_MARIADB(Stmt->Connection);
      EmulatedCleanup(Stmt->Connection->mariadb);
      UNLOCK_MARIADB(Stmt->Connection);
    }

    break;
  case SQL_UNBIND:
    MADB_FREE(Stmt->result);
    MADB_DescFree(Stmt->Ard, TRUE);
    break;
  case SQL_RESET_PARAMS:
    MADB_FREE(Stmt->params);
    if (MADB_SSPS_DISABLED(Stmt))
    {
        // Release the memory allocated for the DAE params.
        MADB_CspsFreeDAE(Stmt);
    }
    MADB_DescFree(Stmt->Apd, TRUE);
    RESET_DAE_STATUS(Stmt);
    break;
  case SQL_DROP:
    MADB_FREE(Stmt->params);
    MADB_FREE(Stmt->result);
    MADB_FREE(Stmt->Cursor.Name);
    MADB_FREE(Stmt->CatalogName);
    MADB_FREE(Stmt->TableName);
    ResetMetadata(&Stmt->metadata, NULL);

    /* For explicit descriptors we only remove reference to the stmt*/
    if (Stmt->Apd->AppType)
    {
      EnterCriticalSection(&Stmt->Connection->ListsCs);
      RemoveStmtRefFromDesc(Stmt->Apd, Stmt, TRUE);
      LeaveCriticalSection(&Stmt->Connection->ListsCs);
      MADB_DescFree(Stmt->IApd, FALSE);
    }
    else
    {
      MADB_DescFree( Stmt->Apd, FALSE);
    }
    if (Stmt->Ard->AppType)
    {
      EnterCriticalSection(&Stmt->Connection->ListsCs);
      RemoveStmtRefFromDesc(Stmt->Ard, Stmt, TRUE);
      LeaveCriticalSection(&Stmt->Connection->ListsCs);
      MADB_DescFree(Stmt->IArd, FALSE);
    }
    else
    {
      MADB_DescFree(Stmt->Ard, FALSE);
    }

    if (MADB_SSPS_DISABLED(Stmt))
    {
        // Release the memory allocated for the DAE params.
        MADB_CspsFreeDAE(Stmt);
    }
    MADB_DescFree(Stmt->Ipd, FALSE);
    MADB_DescFree(Stmt->Ird, FALSE);

    MADB_FREE(Stmt->CharOffset);
    MADB_FREE(Stmt->Lengths);
    ResetMetadata(&Stmt->DefaultsResult, NULL);

    if (Stmt->DaeStmt != NULL)
    {
      Stmt->DaeStmt->Methods->StmtFree(Stmt->DaeStmt, SQL_DROP);
      Stmt->DaeStmt= NULL;
    }
    EnterCriticalSection(&Stmt->Connection->cs);

    if (Stmt->State == MADB_SS_EMULATED)
    {
      EmulatedCleanup(Stmt->Connection->mariadb);
    }

      /* TODO: if multistatement was prepared, but not executed, we would get here Stmt->stmt leaked. Unlikely that is very probable scenario,
               thus leaving this for new version */
    if (QUERY_IS_MULTISTMT(Stmt->Query) && Stmt->MultiStmts)
    {
      unsigned int i;
      for (i= 0; i < STMT_COUNT(Stmt->Query); ++i)
      {
        /* This dirty hack allows to avoid crash in case stmt object was not allocated
           TODO: The better place for this check would be where MultiStmts was not allocated
           to avoid inconsistency(MultiStmtCount > 0 and MultiStmts is NULL */
        if (Stmt->MultiStmts!= NULL && Stmt->MultiStmts[i] != NULL)
        {
          MADB_CspsFreeResult(Stmt, &Stmt->CspsMultiStmtResult[i], Stmt->MultiStmts[i], TRUE);
          MDBUG_C_PRINT(Stmt->Connection, "mysql_stmt_free_result(%0x)", Stmt->MultiStmts[i]);
          mysql_stmt_free_result(Stmt->MultiStmts[i]);
          MDBUG_C_PRINT(Stmt->Connection, "-->closing %0x(%u)", Stmt->MultiStmts[i], i);
          mysql_stmt_close(Stmt->MultiStmts[i]);
        }
      }
      MADB_FREE(Stmt->MultiStmts);
      MADB_FREE(Stmt->CspsMultiStmtResult);
      Stmt->MultiStmtNr= 0;
    }
    else if (Stmt->stmt != NULL)
    {
      MADB_CspsFreeResult(Stmt, &Stmt->CspsResult, Stmt->stmt, TRUE);
      MDBUG_C_PRINT(Stmt->Connection, "-->closing %0x", Stmt->stmt);
      MADB_STMT_CLOSE_STMT(Stmt);
    }
    /* Query has to be deleted after multistmt handles are closed, since the depends on info in the Query */
    MADB_DeleteQuery(&Stmt->Query);
    LeaveCriticalSection(&Stmt->Connection->cs);
    EnterCriticalSection(&Stmt->Connection->ListsCs);
    Stmt->Connection->Stmts= MADB_ListDelete(Stmt->Connection->Stmts, &Stmt->ListItem);
    LeaveCriticalSection(&Stmt->Connection->ListsCs);

    MADB_FREE(Stmt);
  } /* End of switch (Option) */
  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_StmtExecDirect */
SQLRETURN MADB_StmtExecDirect(MADB_Stmt *Stmt, char *StatementText, SQLINTEGER TextLength)
{
  SQLRETURN ret;
  BOOL      ExecDirect= TRUE;

  ret= Stmt->Methods->Prepare(Stmt, StatementText, TextLength, ExecDirect);
  /* In case statement is not supported, we use mysql_query instead */
  if (!SQL_SUCCEEDED(ret))
  {
    /* This is not quite good - 1064 may simply mean that syntax is wrong. we are screwed then */
    if ((Stmt->Error.NativeError == 1295/*ER_UNSUPPORTED_PS*/ ||
         Stmt->Error.NativeError == 1064/*ER_PARSE_ERROR*/))
    {
      Stmt->State= MADB_SS_EMULATED;
    }
    else
    {
      return ret;
    }
  }

  /* For multistmt we don't use mariadb_stmt_execute_direct so far */
  if (QUERY_IS_MULTISTMT(Stmt->Query))
  {
    ExecDirect= FALSE;
  }
  ret = Stmt->Methods->Execute(Stmt, ExecDirect);
  if (SQL_SUCCEEDED(ret)) return ret;
  /* In case statement is not supported, we use mysql_query instead. */
  /* Sometimes SingleStore returns this error only at the execute stage, */
  /* prepare can be successful */
  if (Stmt->Error.NativeError == 1295 /*ER_UNSUPPORTED_PS*/)
  {
    Stmt->Methods->Prepare(Stmt, StatementText, TextLength, ExecDirect);
    Stmt->State= MADB_SS_EMULATED;
  }

  return Stmt->Methods->Execute(Stmt, ExecDirect);
}
/* }}} */

/* {{{ MADB_FindCursor */
MADB_Stmt *MADB_FindCursor(MADB_Stmt *Stmt, const char *CursorName)
{
  MADB_Dbc *Dbc= Stmt->Connection;
  MADB_List *LStmt, *LStmtNext;

  for (LStmt= Dbc->Stmts; LStmt; LStmt= LStmtNext)
  {
    MADB_Cursor *Cursor= &((MADB_Stmt *)LStmt->data)->Cursor;
    LStmtNext= LStmt->next;

    if (Stmt != (MADB_Stmt *)LStmt->data &&
        Cursor->Name && _stricmp(Cursor->Name, CursorName) == 0)
    {
      return (MADB_Stmt *)LStmt->data;
    }
  }
  MADB_SetError(&Stmt->Error, MADB_ERR_34000, NULL, 0);
  return NULL;
}
/* }}} */

/* {{{ FetchMetadata */
MYSQL_RES* FetchMetadata(MADB_Stmt *Stmt)
{
  ResetMetadata(&Stmt->metadata, mysql_stmt_result_metadata(Stmt->stmt));
  return Stmt->metadata;
}
/* }}} */

/* {{{ MADB_StmtReset - reseting Stmt handler for new use. Has to be called inside a lock */
void MADB_StmtReset(MADB_Stmt *Stmt)
{
  if (!QUERY_IS_MULTISTMT(Stmt->Query) || Stmt->MultiStmts == NULL)
  {
    if (Stmt->State > MADB_SS_PREPARED)
    {
      MADB_CspsFreeResult(Stmt, &Stmt->CspsResult, Stmt->stmt, TRUE);
      MDBUG_C_PRINT(Stmt->Connection, "mysql_stmt_free_result(%0x)", Stmt->stmt);
      mysql_stmt_free_result(Stmt->stmt);
    }

    if (Stmt->State >= MADB_SS_PREPARED)
    {
      MDBUG_C_PRINT(Stmt->Connection, "-->closing %0x", Stmt->stmt);
      MADB_STMT_CLOSE_STMT(Stmt);
      Stmt->stmt= MADB_NewStmtHandle(Stmt);

      MDBUG_C_PRINT(Stmt->Connection, "-->inited %0x", Stmt->stmt);
    }
  }
  else
  {
    CloseMultiStatements(Stmt);
    Stmt->stmt= MADB_NewStmtHandle(Stmt);

    MDBUG_C_PRINT(Stmt->Connection, "-->inited %0x", Stmt->stmt);
  }

  switch (Stmt->State)
  {
  case MADB_SS_EXECUTED:
  case MADB_SS_OUTPARAMSFETCHED:

    MADB_FREE(Stmt->result);
    MADB_FREE(Stmt->CharOffset);
    MADB_FREE(Stmt->Lengths);
    RESET_DAE_STATUS(Stmt);

  case MADB_SS_PREPARED:
    ResetMetadata(&Stmt->metadata, NULL);

    Stmt->PositionedCursor= NULL;
    Stmt->Ird->Header.Count= 0;

  case MADB_SS_EMULATED:
  /* We can have the case, then query did not succeed, and in case of direct execution we wouldn't
     have ane state set, but some of stuff still needs to be cleaned. Perhaps we could introduce a state
     for such case, smth like DIREXEC_PREPARED. Would be more proper, but yet overkill */

    EmulatedCleanup(Stmt->Connection->mariadb);

  default:
    Stmt->PositionedCommand= 0;
    Stmt->State= MADB_SS_INITED;
    MADB_CLEAR_ERROR(&Stmt->Error);
  }
}
/* }}} */

/* {{{ MADB_EDPrepare - Method called from SQLPrepare in case it is SQLExecDirect and if server >= 10.2
      (i.e. we gonna do mariadb_stmt_exec_direct) */
SQLRETURN MADB_EDPrepare(MADB_Stmt *Stmt)
{
  /* TODO: In case of positioned command it shouldn't be always*/
  if ((Stmt->ParamCount= Stmt->Apd->Header.Count + (MADB_POSITIONED_COMMAND(Stmt) ? MADB_POS_COMM_IDX_FIELD_COUNT(Stmt) : 0)) != 0)
  {
    if (Stmt->params)
    {
      MADB_FREE(Stmt->params);
    }
    /* If we have "WHERE CURRENT OF", we will need bind additionaly parameters for each field in the index */
    Stmt->params= (MYSQL_BIND *)MADB_CALLOC(sizeof(MYSQL_BIND) * Stmt->ParamCount);
  }
  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_RegularPrepare - Method called from SQLPrepare in case it is SQLExecDirect and if !(server > 10.2)
(i.e. we aren't going to do mariadb_stmt_exec_direct) */
SQLRETURN MADB_RegularPrepare(MADB_Stmt *Stmt)
{
  LOCK_MARIADB(Stmt->Connection);

  MDBUG_C_PRINT(Stmt->Connection, "mysql_stmt_prepare(%0x,%s)", Stmt->stmt, STMT_STRING(Stmt));
  if (mysql_stmt_prepare(Stmt->stmt, STMT_STRING(Stmt), (unsigned long)strlen(STMT_STRING(Stmt))))
  {
    /* Need to save error first */
    MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_STMT, Stmt->stmt);
    /* We need to close the stmt here, or it becomes unusable like in ODBC-21 */
    MDBUG_C_PRINT(Stmt->Connection, "mysql_stmt_close(%0x)", Stmt->stmt);
    MADB_STMT_CLOSE_STMT(Stmt);
    Stmt->stmt= MADB_NewStmtHandle(Stmt);

    UNLOCK_MARIADB(Stmt->Connection);

    MDBUG_C_PRINT(Stmt->Connection, "mysql_stmt_init(%0x)->%0x", Stmt->Connection->mariadb, Stmt->stmt);

    return Stmt->Error.ReturnValue;
  }
  UNLOCK_MARIADB(Stmt->Connection);

  Stmt->State= MADB_SS_PREPARED;

  /* If we have result returning query - fill descriptor records with metadata */
  if (mysql_stmt_field_count(Stmt->stmt) > 0)
  {
    MADB_DescSetIrdMetadata(Stmt, mysql_fetch_fields(FetchMetadata(Stmt)), mysql_stmt_field_count(Stmt->stmt));
  }

  if ((Stmt->ParamCount= (SQLSMALLINT)mysql_stmt_param_count(Stmt->stmt)))
  {
    if (Stmt->params)
    {
      MADB_FREE(Stmt->params);
    }
    Stmt->params= (MYSQL_BIND *)MADB_CALLOC(sizeof(MYSQL_BIND) * Stmt->ParamCount);
  }

  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_StmtPrepare */
SQLRETURN MADB_StmtPrepare(MADB_Stmt *Stmt, char *StatementText, SQLINTEGER TextLength, BOOL ExecDirect)
{
  char          *CursorName= NULL;
  unsigned int  WhereOffset;
  BOOL          HasParameters= 0;

  MDBUG_C_PRINT(Stmt->Connection, "%sMADB_StmtPrepare", "\t->");

  LOCK_MARIADB(Stmt->Connection);

  MADB_StmtReset(Stmt);

  /* After this point we can't have SQL_NTS*/
  ADJUST_LENGTH(StatementText, TextLength);

  /* There is no need to send anything to the server to find out there is syntax error here */
  if (TextLength < MADB_MIN_QUERY_LEN)
  {
    return MADB_SetError(&Stmt->Error, MADB_ERR_42000, NULL, 0);
  }

  if (MADB_ResetParser(Stmt, StatementText, TextLength) != 0)
  {
    return Stmt->Error.ReturnValue;
  }
  MADB_ParseQuery(&Stmt->Query, Stmt->Connection->Dsn->RewriteCallSP);

  if ((Stmt->Query.QueryType == MADB_QUERY_INSERT || Stmt->Query.QueryType == MADB_QUERY_UPDATE || Stmt->Query.QueryType == MADB_QUERY_DELETE)
    && MADB_FindToken(&Stmt->Query, "RETURNING"))
  {
    Stmt->Query.ReturnsResult= '\1';
  }

  if (QUERY_IS_MULTISTMT(Stmt->Query) && NO_CACHE(Stmt))
  {
    return MADB_SetError(&Stmt->Error, MADB_ERR_HY000, "Execution of the multi-statement is not supported with Forward-Only cursor and NO_CACHE option enabled", 0);
  }

  /* if we have multiple statements we save single statements in Stmt->StrMultiStmt
     and store the number in Stmt->MultiStmts */
  /* If client-side prepared statements are enabled or neither of statements
    returns result, and does not have parameters, we will run them using text protocol. */
  if (QueryIsPossiblyMultistmt(&Stmt->Query) && QUERY_IS_MULTISTMT(Stmt->Query) &&
    (Stmt->Query.ReturnsResult || Stmt->Query.HasParameters) && Stmt->Query.BatchAllowed)
  {
    // Do not yet understand this case.
    // As the result of this codepath we end up assuming we have more params than we actually have, so I'll omit this
    // for now.
    if (MADB_SSPS_ENABLED(Stmt) && ExecDirect != FALSE)
    {
      return MADB_EDPrepare(Stmt);
    }
    /* We had error preparing any of statements */
    else if (GetMultiStatements(Stmt, ExecDirect))
    {
      return Stmt->Error.ReturnValue;
    }

    /* all statemtens successfully prepared */
    UNLOCK_MARIADB(Stmt->Connection);
    return SQL_SUCCESS;
  }

  UNLOCK_MARIADB(Stmt->Connection);

  if (!MADB_ValidateStmt(&Stmt->Query))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY000, "SQL command SET NAMES is not allowed", 0);
    return Stmt->Error.ReturnValue;
  }

  /* Transform WHERE CURRENT OF [cursorname]:
     Append WHERE with Parameter Markers
     In StmtExecute we will call SQLSetPos with update or delete:
     */

  if ((CursorName = MADB_ParseCursorName(&Stmt->Query, &WhereOffset)))
  {
    MADB_DynString StmtStr;
    char *TableName;

    /* Make sure we have a delete clause, update clause is not yet supported in the positioned command.
       MADB_QUERY_DELETE is defined in the enum to have the same value as SQL_DELETE.
       */
    if (Stmt->Query.QueryType == MADB_QUERY_DELETE)
    {
      Stmt->PositionedCommand= 1;
    }
    else if (Stmt->Query.QueryType == MADB_QUERY_UPDATE)
    {
      // TODO(PLAT-5080): Support positioned updates.
      MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, "UPDATE clause is not supported for a positioned command", 0);
      return Stmt->Error.ReturnValue;
    }
    else
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_42000, "Invalid SQL Syntax: DELETE is expected for a positioned command", 0);
      return Stmt->Error.ReturnValue;
    }

    if (!(Stmt->PositionedCursor= MADB_FindCursor(Stmt, CursorName)))
      return Stmt->Error.ReturnValue;

    TableName= MADB_GetTableName(Stmt->PositionedCursor);
    MADB_InitDynamicString(&StmtStr, "", 8192, 1024);
    MADB_DynstrAppendMem(&StmtStr, Stmt->Query.RefinedText, WhereOffset);
    MADB_DynStrGetWhere(Stmt->PositionedCursor, &StmtStr, TableName, TRUE);

    // The new query is constructed, delete the previous one and re-calculate the parameter positions.
    if (MADB_SSPS_DISABLED(Stmt))
    {
        MADB_DeleteQuery(&Stmt->Query);
        Stmt->Query.allocated = Stmt->Query.RefinedText = strndup(StmtStr.str, StmtStr.length);
        Stmt->Query.RefinedLength = StmtStr.length;
        MADB_ParseQuery(&Stmt->Query, FALSE);
    } else
    {
        MADB_RESET(STMT_STRING(Stmt), StmtStr.str);
        /* Constructed query we've copied for execution has parameters */
        Stmt->Query.HasParameters= 1;
    }
    MADB_DynstrFree(&StmtStr);
  }

  if (Stmt->Options.MaxRows && Stmt->Query.QueryType == MADB_QUERY_SELECT)
  {
    unsigned long tmpLen = strlen(Stmt->Query.RefinedText) + 60;
    char *tmp = MADB_CALLOC(tmpLen);
    unsigned int updateForOffset;

    if (MADB_CompareToken(&Stmt->Query, Stmt->Query.Tokens.elements-1, "UPDATE", 6, NULL) &&
        MADB_CompareToken(&Stmt->Query, Stmt->Query.Tokens.elements-2, "FOR", 3, &updateForOffset))
    {
      _snprintf(tmp, tmpLen, "SELECT * FROM (%.*s) LIMIT %zd FOR UPDATE", updateForOffset, Stmt->Query.RefinedText, Stmt->Options.MaxRows);
    } else
    {
      _snprintf(tmp, tmpLen, "SELECT * FROM (%s) LIMIT %zd", Stmt->Query.RefinedText, Stmt->Options.MaxRows);
    }
    
    MADB_DeleteQuery(&Stmt->Query);
    Stmt->Query.RefinedText = tmp;
    Stmt->Query.RefinedLength = strlen(Stmt->Query.RefinedText);
    Stmt->Query.allocated = Stmt->Query.RefinedText;
    MADB_ParseQuery(&Stmt->Query, FALSE);
  }

  if (!Stmt->Query.ReturnsResult && !Stmt->Query.HasParameters &&
    /* If have multistatement query, and this is not allowed, we want to do normal prepare.
       To give it last chance. And to return correct error otherwise */
    ! (QUERY_IS_MULTISTMT(Stmt->Query) && !Stmt->Query.BatchAllowed))
  {
    Stmt->State= MADB_SS_EMULATED;
    return SQL_SUCCESS;
  }

  // If server-side prepared statements are disabled, simply store the query on the client and wait for SQLExecute.
  if (MADB_SSPS_DISABLED(Stmt))
  {
      if ((Stmt->ParamCount = Stmt->Query.ParamPositions.elements))
      {
          if (Stmt->params)
          {
              MADB_FREE(Stmt->params);
          }
          Stmt->params= (MYSQL_BIND *)MADB_CALLOC(sizeof(MYSQL_BIND) * Stmt->ParamCount);
      }
      Stmt->State = MADB_SS_PREPARED;
      return SQL_SUCCESS;
  }
  return MADB_RegularPrepare(Stmt);
}
/* }}} */

/* {{{ MADB_StmtParamData */ 
SQLRETURN MADB_StmtParamData(MADB_Stmt *Stmt, SQLPOINTER *ValuePtrPtr)
{
  MADB_Desc *Desc;
  MADB_DescRecord *Record;
  int ParamCount;
  int i;
  SQLRETURN ret;

  if (Stmt->DataExecutionType == MADB_DAE_NORMAL)
  {
    if (!Stmt->Apd || !(ParamCount= Stmt->ParamCount))
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY010, NULL, 0);
      return Stmt->Error.ReturnValue;
    }
    Desc= Stmt->Apd;
  }
  else
  {
    if (!Stmt->Ard || !(ParamCount= Stmt->DaeStmt->ParamCount))
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY010, NULL, 0);
      return Stmt->Error.ReturnValue;
    }
    Desc= Stmt->DaeStmt->Apd;
  }

  /* If we have last DAE param(Stmt->PutParam), we are starting from the next one. Otherwise from first */
  for (i= Stmt->PutParam > -1 ? Stmt->PutParam + 1 : 0; i < ParamCount; i++)
  {
    if ((Record= MADB_DescGetInternalRecord(Desc, i, MADB_DESC_READ)))
    {
      if (Record->OctetLengthPtr)
      {
        /* Stmt->DaeRowNumber is 1 based */
        SQLLEN *OctetLength = (SQLLEN *)GetBindOffset(Desc, Record, Record->OctetLengthPtr, Stmt->DaeRowNumber > 1 ? Stmt->DaeRowNumber - 1 : 0, sizeof(SQLLEN));
        if (PARAM_IS_DAE(OctetLength))
        {
          Stmt->PutDataRec= Record;
          *ValuePtrPtr = GetBindOffset(Desc, Record, Record->DataPtr, Stmt->DaeRowNumber > 1 ? Stmt->DaeRowNumber - 1 : 0, Record->OctetLength);
          Stmt->PutParam= i;
          Stmt->Status= SQL_NEED_DATA;

          return SQL_NEED_DATA;
        }
      }
    }
  }

  /* reset status, otherwise SQLSetPos and SQLExecute will fail */
  MARK_DAE_DONE(Stmt);
  if (Stmt->DataExecutionType == MADB_DAE_ADD || Stmt->DataExecutionType == MADB_DAE_UPDATE)
  {
    MARK_DAE_DONE(Stmt->DaeStmt);
  }

  switch (Stmt->DataExecutionType) {
  case MADB_DAE_NORMAL:
    ret= Stmt->Methods->Execute(Stmt, FALSE);
    RESET_DAE_STATUS(Stmt);
    break;
  case MADB_DAE_UPDATE:
    ret= Stmt->Methods->SetPos(Stmt, Stmt->DaeRowNumber, SQL_UPDATE, SQL_LOCK_NO_CHANGE, 1);
    RESET_DAE_STATUS(Stmt);
    break;
  case MADB_DAE_ADD:
    ret= Stmt->DaeStmt->Methods->Execute(Stmt->DaeStmt, FALSE);
    MADB_CopyError(&Stmt->Error, &Stmt->DaeStmt->Error);
    RESET_DAE_STATUS(Stmt->DaeStmt);
    break;
  default:
    ret= SQL_ERROR;
  }
  /* Interesting should we reset if execution failed? */

  // Clear the Ipd record data that was used to construct the query in the CSPS.
  if (MADB_SSPS_DISABLED(Stmt))
  {
      MADB_CspsFreeDAE(Stmt);
  }

  return ret;
}
/* }}} */

/* {{{ MADB_StmtPutData */
SQLRETURN MADB_StmtPutData(MADB_Stmt *Stmt, SQLPOINTER DataPtr, SQLLEN StrLen_or_Ind)
{
  MADB_DescRecord *Record;
  MADB_Stmt       *MyStmt= Stmt;
  SQLPOINTER      ConvertedDataPtr= NULL;
  SQLULEN         Length= 0;

  MADB_CLEAR_ERROR(&Stmt->Error);

  if (DataPtr != NULL && StrLen_or_Ind < 0 && StrLen_or_Ind != SQL_NTS && StrLen_or_Ind != SQL_NULL_DATA)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY090, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (Stmt->DataExecutionType != MADB_DAE_NORMAL)
  {
    MyStmt= Stmt->DaeStmt;
  }
  Record= MADB_DescGetInternalRecord(MyStmt->Apd, Stmt->PutParam, MADB_DESC_READ);
  assert(Record);

  if (StrLen_or_Ind == SQL_NULL_DATA)
  {
    // Check if we've already sent any data.
    // For the csps we tell that by checking the InternalLength which is set only in this function.
    if (MyStmt->stmt->params[Stmt->PutParam].long_data_used || Record->InternalLength > 0)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY020, "Concatenation of a null value is forbidden", 0);
      return Stmt->Error.ReturnValue;
    }
    Record->Type= SQL_TYPE_NULL;
    return SQL_SUCCESS;
  }

  /* This normally should be enforced by DM */
  if (DataPtr == NULL && StrLen_or_Ind != 0)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY009, NULL, 0);
    return Stmt->Error.ReturnValue;
  }
/*
  if (StrLen_or_Ind == SQL_NTS)
  {
    if (Record->ConciseType == SQL_C_WCHAR)
      StrLen_or_Ind= wcslen((SQLWCHAR *)DataPtr);
    else
      StrLen_or_Ind= strlen((char *)DataPtr);
  }
 */
  if (Record->ConciseType == SQL_C_WCHAR)
  {
    /* Conn cs */
    ConvertedDataPtr= MADB_ConvertFromWChar((SQLWCHAR *)DataPtr, (SQLINTEGER)(StrLen_or_Ind/sizeof(SQLWCHAR)), &Length, &Stmt->Connection->Charset, NULL);

    if ((ConvertedDataPtr == NULL || Length == 0) && StrLen_or_Ind > 0)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
      return Stmt->Error.ReturnValue;
    }
  }
  else
  {
    if (StrLen_or_Ind == SQL_NTS)
    {
      Length= strlen((char *)DataPtr);
    }
    else
    {
      Length= StrLen_or_Ind;
    }
  }

  // For client-side prepared statements we need to store the data within the driver before we're ready to execute.
  // Making a deep copy of the data will probably be a bad news for the client memory (who would use SQLPutData if not
  // for the long chars or blobs?); but seems like we don't have another option:
  // 1) We cannot store it in the bound data buffer because it's not guaranteed that it fits all the data and it could
  // easily be a dummy pointer in the DAE case. Furthermore, who would use SQLPutData if they can fully fit the data
  // into their application buffers and just bind the parameters?
  // 2) Clients can also call SQLPutData as many times as they need, and we'll have to concat all the data.
  // For the binary protocol the codepath below is executed, where mysql_stmt_send_long_data sends a
  // COM_STMT_SEND_LONG_DATA packet - a so-called "Long Data" feature which is not supported by SingleStore,
  // so the client-side case probably won't make things worse.
  //
  // Another note: seems like for the SQLExecute+SQLPutData scenario the driver demonstrates a strange behavior:
  // For SQLSetPos(SQL_ADD and SQL_DELETE operations) it recognizes the fact that paramset size may be greater than 1
  // and return the proper data buffers.
  // On the other hand, for generic SQLExecute API, the relevant fields are not used, so de-facto the driver assumes
  // the paramset size is always 1. Besides that, it seems like the logic to send the long data multiple times for
  // multiple parameters in the parameter array is simply missing (this is the case also for SQLSetPos).
  // I don't see any information in the ODBC docs forbidding the use of big paramsets for SQLPutData, so it's probably
  // a bug or missing intentionally.
  // The current behavior for the client-side prepared statements will also work only for the paramset of size 1.
  // TODO (PLAT-4993): support SQLPutData+SQLParamData for bigger paramsets.
  // This can probably be done by iterating over the paramset in the SQLParamData and request the call to SQLPutData
  // for every row in the paramset.
  if (MADB_SSPS_DISABLED(Stmt))
  {
      // Currently client-side prepared statements support SQLPutData+SQLParamData only for paramsets of size 1.
      if (MyStmt->Apd->Header.ArraySize > 1)
      {
          return MADB_SetError(&Stmt->Error, MADB_ERR_HY000, "SQLPutData for paramsets of size > 1 is not supported in the text protocol mode", 0);
      }

      // It's much more convenient to modify the IpdRecord since its DataPtr field is unused in ODBC.
      // Messing around with Apd would be too dangerous - we'll have to keep track of the OctetLength for each parameter
      // that is inserted via SQLPutData and any other relevant metadata.
      MADB_DescRecord *IpdRecord= MADB_DescGetInternalRecord(MyStmt->Ipd, Stmt->PutParam, MADB_DESC_WRITE);

      // SQLPutData may be called multiple times for a single parameter only if it's a binary or char parameter.
      // Otherwise, the call should fail.
      my_bool isStringType = FALSE;
      switch (Record->ConciseType)
      {
          case SQL_C_CHAR:
          case SQL_VARCHAR:
          case SQL_LONGVARCHAR:
          case SQL_C_WCHAR:
          case SQL_WVARCHAR:
          case SQL_WLONGVARCHAR:
          case SQL_C_BINARY:
          case SQL_VARBINARY:
          case SQL_LONGVARBINARY:
              isStringType = TRUE;
              break;
          default:
              isStringType = FALSE;
      }

      SQLPOINTER dataToAppend = (ConvertedDataPtr ? ConvertedDataPtr : DataPtr);

      // The clients don't have access to the InternalLength via descriptor API and this function is the only place
      // where we update it. Therefore it's safe to allocate the memory based on this value as long as we support only
      // paramsets of size 1. This needs to be updated after we support bigger paramsets.
      if (!IpdRecord->InternalLength)
      {
          // It's the first time we get the call to SQLPutData for this parameter.
          // Allocate the memory for this chunk of data. Add a null terminator if it's a string type.
          SQLPOINTER dataBuffer = MADB_ALLOC(Length + isStringType);
          if (!dataBuffer)
          {
              return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to allocate memory for the long data", 0);
          }
          memcpy(dataBuffer, dataToAppend, Length);
          if (isStringType)
          {
              ((char*)dataBuffer)[Length] = '\0';
          }
          IpdRecord->DataPtr = dataBuffer;
      } else
      {
          // SQLPutData is not allowed to be called more than once for the non-character and non-binary data.
          if (!isStringType)
          {
              return MADB_SetError(&Stmt->Error, MADB_ERR_HY019, "Non-character and non-binary data sent in pieces", 0);
          }

          // SQLPutData was already called for this parameter, so we have a part of the data.
          // Reallocate the buffer to fit the chunk that is being inserted now.
          unsigned long oldLength = IpdRecord->InternalLength;
          SQLPOINTER dataBuffer = MADB_REALLOC(IpdRecord->DataPtr, oldLength + Length + 1);
          if (!dataBuffer)
          {
              return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to allocate memory for the long data", 0);
          }
          memcpy((char*)dataBuffer + oldLength, dataToAppend, Length);
          ((char*)dataBuffer)[oldLength + Length] = '\0';
          IpdRecord->DataPtr = dataBuffer;
      }
      IpdRecord->InternalLength += (unsigned long)Length;
      // We should probably update the OctetLength to make sure the offset for DataPtr is correct.
      IpdRecord->OctetLength = IpdRecord->InternalLength;

      // If ConvertedDataPtr is not NULL, memory was allocated to convert from WCHAR to CHAR, so we'd need to release
      // that memory after it's copied into the IPD record.
      if (ConvertedDataPtr)
      {
          MADB_FREE(ConvertedDataPtr);
      }
      return SQL_SUCCESS;
  }

  // This logic currently does not work for the SSPS as it requires a "Long Data" feature which is not supported
  // by SingleStore.
  return MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, "'Long Data' feature is not supported in the binary protocol", 0);
}
/* }}} */

/* {{{ MADB_ExecutePositionedUpdate */
SQLRETURN MADB_ExecutePositionedUpdate(MADB_Stmt *Stmt, BOOL ExecDirect)
{
  SQLSMALLINT   j;
  SQLRETURN     ret;
  MADB_DynArray DynData;
  MADB_Stmt     *SaveCursor;

  char *p;

  MADB_CLEAR_ERROR(&Stmt->Error);
  if (!Stmt->PositionedCursor->result)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_34000, "Cursor has no result set or is not open", 0);
    return Stmt->Error.ReturnValue;
  }
  MADB_StmtDataSeek(Stmt->PositionedCursor, Stmt->PositionedCursor->Cursor.Position);
  Stmt->Methods->RefreshRowPtrs(Stmt->PositionedCursor);

  memcpy(&Stmt->Apd->Header, &Stmt->Ard->Header, sizeof(MADB_Header));
  
  Stmt->AffectedRows= 0;
  
  MADB_InitDynamicArray(&DynData, sizeof(char *), 8, 8);

  for (j= 1; j < MADB_POS_COMM_IDX_FIELD_COUNT(Stmt) + 1; ++j)
  {
    SQLLEN Length;
    MADB_DescRecord *Rec= MADB_DescGetInternalRecord(Stmt->PositionedCursor->Ard, j, MADB_DESC_READ);
    Length= Rec->OctetLength;
 /*   if (Rec->inUse)
      MA_SQLBindParameter(Stmt, j+1, SQL_PARAM_INPUT, Rec->ConciseType, Rec->Type, Rec->DisplaySize, Rec->Scale, Rec->DataPtr, Length, Rec->OctetLengthPtr);
    else */
    {
      Stmt->Methods->GetData(Stmt->PositionedCursor, j, SQL_CHAR, NULL, 0, &Length, TRUE);
      p= (char *)MADB_CALLOC(Length + 2);
      MADB_InsertDynamic(&DynData, (char *)&p);
      Stmt->Methods->GetData(Stmt->PositionedCursor, j, SQL_CHAR, p, Length + 1, NULL, TRUE);
      Stmt->Methods->BindParam(Stmt, j + (Stmt->ParamCount - MADB_POS_COMM_IDX_FIELD_COUNT(Stmt)), SQL_PARAM_INPUT, SQL_CHAR, SQL_CHAR, 0, 0, p, Length, NULL);

    }
  }

  SaveCursor= Stmt->PositionedCursor;
  Stmt->PositionedCursor= NULL;

  ret= Stmt->Methods->Execute(Stmt, ExecDirect);

  Stmt->PositionedCursor= SaveCursor;

  /* For the case of direct execution we need to restore number of parameters bound by application, for the case when application
     re-uses handle with same parameters for another query. Otherwise we won't know that number (of application's parameters) */
  if (ExecDirect)
  {
    Stmt->Apd->Header.Count-= MADB_POS_COMM_IDX_FIELD_COUNT(Stmt);
  }

  for (j=0; j < (int)DynData.elements; j++)
  {
    MADB_GetDynamic(&DynData, (char *)&p, j);
    MADB_FREE(p);
  }
  MADB_DeleteDynamic(&DynData);

  if (Stmt->PositionedCursor->Options.CursorType == SQL_CURSOR_DYNAMIC && 
     (ret == SQL_SUCCESS || ret == SQL_SUCCESS_WITH_INFO))
  {
    SQLRETURN rc;
    rc= Stmt->Methods->RefreshDynamicCursor(Stmt->PositionedCursor);
    if (!SQL_SUCCEEDED(rc))
    {
      MADB_CopyError(&Stmt->Error, &Stmt->PositionedCursor->Error);
      return Stmt->Error.ReturnValue;
    }
    if (Stmt->Query.QueryType == SQL_DELETE)
    {
      MADB_STMT_RESET_CURSOR(Stmt->PositionedCursor);
    }
      
  }
  //MADB_FREE(DataPtr);
  return ret;
}
/* }}} */

/* {{{ MADB_GetOutParams */
SQLRETURN MADB_GetOutParams(MADB_Stmt *Stmt, int CurrentOffset)
{
  MYSQL_BIND *Bind;
  unsigned int i=0, ParameterNr= 0;

  /* Since Outparams are only one row, we use store result */
  if (mysql_stmt_store_result(Stmt->stmt))
  {
    return MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_STMT, Stmt);
  }

  Bind= (MYSQL_BIND *)MADB_CALLOC(sizeof(MYSQL_BIND) * mysql_stmt_field_count(Stmt->stmt));

  for (i=0; i < (unsigned int)Stmt->ParamCount && ParameterNr < mysql_stmt_field_count(Stmt->stmt); i++)
  {
    MADB_DescRecord *IpdRecord, *ApdRecord;
    if ((IpdRecord= MADB_DescGetInternalRecord(Stmt->Ipd, i, MADB_DESC_READ))!= NULL)
    {
      if (IpdRecord->ParameterType == SQL_PARAM_INPUT_OUTPUT ||
          IpdRecord->ParameterType == SQL_PARAM_OUTPUT)
      {
        ApdRecord= MADB_DescGetInternalRecord(Stmt->Apd, i, MADB_DESC_READ);
        Bind[ParameterNr].buffer= GetBindOffset(Stmt->Apd, ApdRecord, ApdRecord->DataPtr, CurrentOffset, ApdRecord->OctetLength);
        if (ApdRecord->OctetLengthPtr)
        {
          Bind[ParameterNr].length= (unsigned long *)GetBindOffset(Stmt->Apd, ApdRecord, ApdRecord->OctetLengthPtr,
                                                        CurrentOffset, sizeof(SQLLEN));
        }
        Bind[ParameterNr].buffer_length= (unsigned long)ApdRecord->OctetLength;
        Bind[ParameterNr].buffer_type= Stmt->stmt->params[i].buffer_type;
        ParameterNr++;
      }
    }
  }
  mysql_stmt_bind_result(Stmt->stmt, Bind);
  mysql_stmt_fetch(Stmt->stmt);
   
  mysql_stmt_data_seek(Stmt->stmt, 0);
  MADB_FREE(Bind);

  return SQL_SUCCESS;
}
/* }}} */

/* {{{ ResetInternalLength */
static void ResetInternalLength(MADB_Stmt *Stmt, unsigned int ParamOffset)
{
  unsigned int i;
  MADB_DescRecord *ApdRecord;

  for (i= ParamOffset; i < ParamOffset + Stmt->ParamCount; ++i)
  {
    if ((ApdRecord= MADB_DescGetInternalRecord(Stmt->Apd, i, MADB_DESC_READ)))
    {
      ApdRecord->InternalLength= 0;
    }
  }
}
/* }}} */

static int SetUnboundParameterError(MADB_Stmt* const Stmt)
{
    return MADB_SetError(&Stmt->Error, MADB_ERR_07002, "Parameter was not bound before calling SQLExecute", 0);
}

/* {{{ MADB_DoExecute */
/* Actually executing on the server, doing required actions with C API, and processing execution result */
SQLRETURN MADB_DoExecute(MADB_Stmt *Stmt)
{
  SQLRETURN ret= SQL_SUCCESS;

  /**************************** mysql_stmt_bind_param **********************************/
  unsigned int arr_size = 0;
  mysql_stmt_attr_set(Stmt->stmt, STMT_ATTR_ARRAY_SIZE, (void*)&arr_size);

  if (Stmt->ParamCount)
  {
    mysql_stmt_bind_param(Stmt->stmt, Stmt->params);
  }
  ret= SQL_SUCCESS;

  /**************************** mysql_stmt_execute *************************************/

  MDBUG_C_PRINT(Stmt->Connection, "mariadb_stmt_execute(%0x)(%s)", Stmt->stmt, STMT_STRING(Stmt));

  if (mysql_stmt_execute(Stmt->stmt))
  {
    ret= MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_STMT, Stmt->stmt);
    MDBUG_C_PRINT(Stmt->Connection, "mysql_stmt_execute:ERROR%s", "");
  }
  else
  {
    unsigned int ServerStatus;

    Stmt->State= MADB_SS_EXECUTED;

    mariadb_get_infov(Stmt->Connection->mariadb, MARIADB_CONNECTION_SERVER_STATUS, (void*)&ServerStatus);
    if (ServerStatus & SERVER_PS_OUT_PARAMS)
    {
      Stmt->State= MADB_SS_OUTPARAMSFETCHED;
      ret= Stmt->Methods->GetOutParams(Stmt, 0);
    }
  }
  return ret;
}
/* }}} */

void MADB_SetStatusArray(MADB_Stmt *Stmt, SQLUSMALLINT Status)
{
  if (Stmt->Ipd->Header.ArrayStatusPtr != NULL)
  {
    memset(Stmt->Ipd->Header.ArrayStatusPtr, 0x00ff & Status, Stmt->Apd->Header.ArraySize*sizeof(SQLUSMALLINT));
    if (Stmt->Apd->Header.ArrayStatusPtr != NULL)
    {
      unsigned int i;
      for (i= 0; i < Stmt->Apd->Header.ArraySize; ++i)
      {
        if (Stmt->Apd->Header.ArrayStatusPtr[i] == SQL_PARAM_IGNORE)
        {
          Stmt->Ipd->Header.ArrayStatusPtr[i]= SQL_PARAM_UNUSED;
        }
      }
    }
  }
}

SQLRETURN ConstructBitValue(MADB_Stmt *Stmt, void* DataPtr, MADB_DynString *Target)
{
    // ODBC recognizes only BIT(1), so let's send over 1 or 0 based on the first char.
    char* bitParam = *(SQLCHAR *) DataPtr == '\0' ? "0" : "1";
    if (MADB_DynstrAppend(Target, bitParam))
    {
        return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a bit parameter", 0);
    }
    return SQL_SUCCESS;
}


/* {{{ MADB_InsertParam */
/* This function gets the client parameter from the ApdRecord or from the IpdRecord (if its a Long Data parameter).
Since the paramset may contain multiple parameter rows, ParamSetIdx denotes the offset in the paramset (i.e. the row
in the paramset that we're currently processing).
Based on the bound type, the parameter data is converted into a string and inserted into a final_query.
In contrast to the server-side prepared statements, we validate the IpdRecord type (i.e. SQL type that the parameter
should be converted to) because we convert everything to strings, so there cannot be unsupported conversions. */
SQLRETURN MADB_InsertParam(MADB_Stmt* Stmt, MADB_DescRecord* ApdRecord, MADB_DescRecord* IpdRecord, int ParamSetIdx, MADB_DynString* final_query)
{
    int ret = SQL_SUCCESS;
    MADB_DynString data;
    SQLLEN *IndicatorPtr = NULL;
    SQLLEN *OctetLengthPtr = NULL;
    void* DataPtr;
    SQLLEN Length;
    char *escapedParameter = NULL;
    my_bool EncloseInQuotes = TRUE;

    IndicatorPtr = GetBindOffset(Stmt->Apd, ApdRecord, ApdRecord->IndicatorPtr, ParamSetIdx, sizeof(SQLLEN));
    OctetLengthPtr = GetBindOffset(Stmt->Apd, ApdRecord, ApdRecord->OctetLengthPtr, ParamSetIdx, sizeof(SQLLEN));
    DataPtr = GetBindOffset(Stmt->Apd, ApdRecord, ApdRecord->DataPtr, ParamSetIdx, ApdRecord->OctetLength);

    // If it's a DATA_AT_EXEC parameter, we exit with SQL_NEED_DATA and execute when all the parameters are provided.
    if (PARAM_IS_DAE(OctetLengthPtr))
    {
        if (!DAE_DONE(Stmt))
        {
            return SQL_NEED_DATA;
        }
        // All the parameters were provided, so we're free to continue execution.
        // DAE parameters are stored in the Ipd (see comment in the MADB_StmtPutData function).
        DataPtr = GetBindOffset(Stmt->Ipd, IpdRecord, IpdRecord->DataPtr, ParamSetIdx, IpdRecord->OctetLength);
    }

    if (MADB_InitDynamicString(&data, "", 16, 32))
    {
        return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Error initializing the string for a single parameter", 0);
    }

    if (IndicatorPtr)
    {
        if ((*IndicatorPtr == SQL_COLUMN_IGNORE && !ApdRecord->DefaultValue) || *IndicatorPtr == SQL_NULL_DATA)
        {
            // No need to escape NULL, so exit after it is appended.
            if (MADB_DynstrAppend(final_query, "NULL"))
            {
                ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001,"Failed to append the parameter", 0);
            }
            goto end;
        } else if (*IndicatorPtr == SQL_COLUMN_IGNORE && ApdRecord->DefaultValue)
        {
            if (MADB_DynstrAppend(&data, ApdRecord->DefaultValue))
            {
                ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001,"Failed to append the parameter", 0);
            }
            goto escape;
        }
    }

    switch (ApdRecord->ConciseType)
    {
        case SQL_C_NUMERIC:
        {
            // The precision and scale fields of the numeric structure are never used for input from an application,
            // only for output from the driver to the application.
            // For input they're set via SQLSetDescField of the Ipd descriptor.
            SQL_NUMERIC_STRUCT *num = (SQL_NUMERIC_STRUCT *) DataPtr;
            num->precision = IpdRecord->Precision;
            num->scale = IpdRecord->Scale;

            char converted[128];
            int errCode = 0;
            MADB_ConvertNumericToChar((SQL_NUMERIC_STRUCT *) DataPtr, converted, &errCode);
            if (errCode)
            {
                ret = MADB_SetError(&Stmt->Error, errCode, "Numeric conversion failure", 0);
                if (!SQL_SUCCEEDED(ret))
                {
                    goto end;
                }
            }
            if (MADB_DynstrAppend(&data, converted))
            {
                ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a numeric parameter", 0);
                goto end;
            }
            break;
        }
        case SQL_C_FLOAT:
        {
          // Should we use a different number of decimal digits? It is enough for default values of float or double,
          // but it may be inappropriate for the high precision fields.
          char converted[50];
          sprintf(converted, "%.17e", *(SQLREAL*)DataPtr);
          if (MADB_DynstrAppend(&data, converted))
          {
            ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a float parameter", 0);
            goto end;
          }
          EncloseInQuotes = FALSE;
          break;
        }
        case SQL_FLOAT:
        case SQL_C_DOUBLE:
        {
            // Should we use a different number of decimal digits? It is enough for default values of float or double,
            // but it may be inappropriate for the high precision fields.
            char converted[50];
            sprintf(converted, "%.17e", *(SQLDOUBLE*)DataPtr);
            if (MADB_DynstrAppend(&data, converted))
            {
                ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a double parameter", 0);
                goto end;
            }
            EncloseInQuotes = FALSE;
            break;
        }
        case SQL_C_TIME:
        case SQL_C_DATE:
        case SQL_C_TIMESTAMP:
        case SQL_C_TYPE_TIME:
        case SQL_C_TYPE_DATE:
        case SQL_C_TYPE_TIMESTAMP:
        {
            if (!MADB_ConversionSupported(ApdRecord, IpdRecord))
            {
                ret = MADB_SetError(&Stmt->Error, MADB_ERR_07006, "Conversion is not supported", 0);
                goto end;
            }

            // Make the buffer big enough to handle any possible invalid input.
            char converted[50];
            ret = MADB_ConvertDatetimeToChar(Stmt, ApdRecord->ConciseType, IpdRecord->ConciseType, DataPtr, converted);
            if (!SQL_SUCCEEDED(ret))
            {
                goto end;
            }
            if (MADB_DynstrAppend(&data, converted))
            {
                ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a timestamp parameter", 0);
                goto end;
            }
            break;
        }
        case SQL_INTERVAL_YEAR:
        case SQL_INTERVAL_MONTH:
        case SQL_INTERVAL_DAY:
        case SQL_INTERVAL_HOUR:
        case SQL_INTERVAL_MINUTE:
        case SQL_INTERVAL_SECOND:
        case SQL_INTERVAL_YEAR_TO_MONTH:
        case SQL_INTERVAL_DAY_TO_HOUR:
        case SQL_INTERVAL_DAY_TO_MINUTE:
        case SQL_INTERVAL_DAY_TO_SECOND:
        case SQL_INTERVAL_HOUR_TO_MINUTE:
        case SQL_INTERVAL_HOUR_TO_SECOND:
        case SQL_INTERVAL_MINUTE_TO_SECOND:
            // TODO(PLAT-5085): handle intervals when they're implemented on the engine side.
            // SingleStore does not recognize INTERVAL type, so let's return an "unsupported conversion" error.
            ret = MADB_SetError(&Stmt->Error, MADB_ERR_07006, "Conversion of INTERVAL data is not supported", 0);
            goto end;
            break;
        case SQL_CHAR:
        case SQL_VARCHAR:
        case SQL_LONGVARCHAR:
        {
            // DAE parameter is stored in the IpdRecord, and it's length should be properly calculated by now, so just
            // reuse it. Otherwise, calculate the length explicitly.
            Length = PARAM_IS_DAE(OctetLengthPtr) ? IpdRecord->OctetLength : MADB_CalculateLength(Stmt, OctetLengthPtr, ApdRecord, DataPtr);

            switch(IpdRecord->Type)
            {
                case SQL_BIT:
                    if (!SQL_SUCCEEDED(ConstructBitValue(Stmt, DataPtr, &data)))
                    {
                        goto end;
                    }
                    EncloseInQuotes = FALSE;
                    break;
                case SQL_DATETIME:
                {
                    MYSQL_TIME Tm;
                    SQL_TIMESTAMP_STRUCT Ts;
                    BOOL isTime;

                    /* Enforcing constraints on date/time values */
                    SQLRETURN rc = MADB_Str2Ts(DataPtr, Length, &Tm, FALSE, &Stmt->Error, &isTime);
                    if (!SQL_SUCCEEDED(rc)) {
                        MADB_DynstrFree(&data);
                        return rc;
                    }
                    MADB_CopyMadbTimeToOdbcTs(&Tm, &Ts);
                    rc = MADB_TsConversionIsPossible(&Ts, IpdRecord->ConciseType, &Stmt->Error, MADB_ERR_22018, isTime);
                    if (!SQL_SUCCEEDED(rc)) {
                        MADB_DynstrFree(&data);
                        return rc;
                    }
                    // if everything is ok, fall below and append a char* DataPtr.
                }
                default:
                    if (MADB_DynstrAppendMem(&data, (char *) DataPtr, Length))
                    {
                        ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a char parameter", 0);
                        goto end;
                    }
                    break;
            }
            break;
        }
        case SQL_WCHAR:
        case SQL_WVARCHAR:
        case SQL_WLONGVARCHAR:
        {
            if (!PARAM_IS_DAE(OctetLengthPtr))
            {
                // This is not a DAE parameter, so we'll need to calculate the length and convert to UTF8.
                Length = MADB_CalculateLength(Stmt, OctetLengthPtr, ApdRecord, DataPtr);
                SQLULEN convertedLen;
                char *converted = MADB_ConvertFromWChar((SQLWCHAR *) DataPtr, Length/sizeof(SQLWCHAR), &convertedLen,
                                                        &Stmt->Connection->Charset, &ret);
                if (!SQL_SUCCEEDED(ret))
                {
                    MADB_FREE(converted);
                    ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY000, "Failed to convert a wchar parameter", 0);
                    goto end;
                }
                if (MADB_DynstrAppend(&data, converted))
                {
                    MADB_FREE(converted);
                    ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a wchar parameter", 0);
                    goto end;
                }
                MADB_FREE(converted);
            } else // is DAE parameter
            {
                // DAE parameter is stored in the IpdRecord, and it's length should be properly calculated by now.
                // Unicode DAE parameter was already converted to the UTF8 in SQLPutData, so just append the data.
                if (MADB_DynstrAppendMem(&data, DataPtr, IpdRecord->OctetLength))
                {
                    ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a wchar parameter", 0);
                    goto end;
                }
            }
            break;
        }
        case SQL_C_BIT:
        {
            if (!SQL_SUCCEEDED(ConstructBitValue(Stmt, DataPtr, &data)))
            {
                goto end;
            }
            EncloseInQuotes = FALSE;
            break;
        }
        case SQL_C_BINARY:
        case SQL_VARBINARY:
        case SQL_LONGVARBINARY:
        {
            // DAE parameter is stored in the IpdRecord, and it's length should be properly calculated by now, so just
            // reuse it. Otherwise, calculate the length explicitly.
            Length = PARAM_IS_DAE(OctetLengthPtr) ? IpdRecord->OctetLength : MADB_CalculateLength(Stmt, OctetLengthPtr, ApdRecord, DataPtr);

            // Client's SQL_C_BINARY = ODBC's SQLCHAR:
            // https://docs.microsoft.com/en-us/sql/odbc/reference/appendixes/c-data-types?view=sql-server-ver15
            if (MADB_DynstrAppendMem(&data, (char *) DataPtr, Length))
            {
                ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append a binary parameter", 0);
                goto end;
            }
            break;
        }
        default: // Integers.
        {
            char converted[22];
            MADB_ConvertIntegerToChar(Stmt, ApdRecord->ConciseType, DataPtr, converted);
            if (MADB_DynstrAppend(&data, converted))
            {
                MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append an integer parameter", 0);
                goto end;
            }
            EncloseInQuotes = FALSE;
            break;
        }
    }

escape:
    // Make the escape buffer big enough to fit the escape characters added by mysql_real_escape_string.
    escapedParameter = MADB_CALLOC((data.length << 1) + 1);
    if (!escapedParameter)
    {
        ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to allocate memory for the escaped parameter", 0);
        goto end;
    }
    mysql_real_escape_string(Stmt->Connection->mariadb, escapedParameter, data.str, data.length);

    if (EncloseInQuotes)
    {
        if (MADB_DynstrAppend(final_query, "'") ||
            MADB_DynstrAppend(final_query, escapedParameter) ||
            MADB_DynstrAppend(final_query, "'"))
        {
            ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append the escaped parameter", 0);
        }
    } else
    {
        if (MADB_DynstrAppend(final_query, escapedParameter))
        {
            ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append the escaped parameter", 0);
        }
    }

end:
    MADB_FREE(escapedParameter);
    MADB_DynstrFree(&data);
    return ret;
}
/* }}} */

/* {{{ MADB_InsertParams */
/* This function inserts the parameters in the final_query.
Since there may be multiple statements in a single query (so-called multistatement), in which case we prepare each
statement separately. Parameters for the current statement start from the ParamOffset position.
Since the paramset may contain multiple parameter rows, ParamSetIdx denotes the offset in the paramset (i.e. the row
in the paramset that we're currently processing).
QueryOffset denotes the position from which we start constructing the final_query (for single-statement queries
QueryOffset is always 0). */
SQLRETURN MADB_InsertParams(MADB_Stmt *Stmt, unsigned long QueryOffset, SQLULEN ParamSetIdx, unsigned int ParamOffset, MADB_DynString* final_query)
{
    int i = 0;
    unsigned long ParamIdx;
    int ret = SQL_SUCCESS;

    // QueryOffset is needed when we deal with multistatements.
    // InsertParams is called for each subquery and we need to know the right offset to correctly insert parameters.
    char *queryStart = Stmt->Query.RefinedText + QueryOffset, *query = queryStart;
    unsigned long queryLen = strlen(query);

    for (i = ParamOffset; i < ParamOffset + MADB_STMT_PARAM_COUNT(Stmt); ++i)
    {
        MADB_DescRecord *ApdRecord, *IpdRecord;
        if ((ApdRecord= MADB_DescGetInternalRecord(Stmt->Apd, i, MADB_DESC_READ)) &&
            (IpdRecord= MADB_DescGetInternalRecord(Stmt->Ipd, i, MADB_DESC_READ)))
        {
            // Check if parameter was bound.
            if (!ApdRecord->inUse)
            {
                ret= SetUnboundParameterError(Stmt);
                goto error;
            }

            // Get the position of the current parameter in a query.
            MADB_GetDynamic(&Stmt->Query.ParamPositions, &ParamIdx, i);

            // Append the part preceding the parameter.
            unsigned int LenBeforeParam = (Stmt->Query.RefinedText + ParamIdx) - query;
            MADB_DynstrAppendMem(final_query, query, LenBeforeParam);
            query += LenBeforeParam + 1; // omit the ?

            ret = MADB_InsertParam(Stmt, ApdRecord, IpdRecord, ParamSetIdx, final_query);
            if (!SQL_SUCCEEDED(ret))
            {
                goto error;
            }
        }
    }

    // Append the part after the last parameter.
    if (MADB_DynstrAppendMem(final_query, query, (queryStart + queryLen) - query))
    {
        ret= MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to append the query suffix", 0);
        goto error;
    }

    return ret;

error:
    MADB_DynstrFree(final_query);
    return ret;
}
/* }}} */

static int CspsInitStatementFromMultistatement( MADB_Stmt* const Stmt,
                                                const unsigned StatementNr,
                                                const char* const CurQuery,
                                                const char* const QueriesEnd,
                                                unsigned* const ParamPosId)
{
    unsigned ParamCount = 0;
    unsigned long ParamIdx;

    if (Stmt->MultiStmts && Stmt->MultiStmts[StatementNr] != NULL)
    {
        Stmt->stmt= Stmt->MultiStmts[StatementNr];
    }
    else
    {
        /* We have direct execution, since otherwise it'd already prepared, and thus Stmt->MultiStmts would be set */
        if (CurQuery >= QueriesEnd)
        {
            /* Something went wrong(with parsing). But we've got here, and everything worked. Giving it chance to fail later.
               This shouldn't really happen */
            MDBUG_C_PRINT(Stmt->Connection, "Got past end of query direct-executing %s on stmt #%u", Stmt->Query.RefinedText, StatementNr);
            return 1;
        }
        if (StatementNr > 0)
        {
            Stmt->stmt= MADB_NewStmtHandle(Stmt);
        }
        else
        {
            Stmt->MultiStmts= (MYSQL_STMT **)MADB_CALLOC(sizeof(MYSQL_STMT) * STMT_COUNT(Stmt->Query));
            Stmt->CspsMultiStmtResult = (MYSQL_RES **) MADB_CALLOC(sizeof(MYSQL_RES) * STMT_COUNT(Stmt->Query));
        }

        Stmt->MultiStmts[StatementNr]= Stmt->stmt;
    }
    Stmt->CspsResult = Stmt->CspsMultiStmtResult[StatementNr];

    Stmt->RebindParams= TRUE;

    // In case of CSPS we trust our parsing to determine the number of parameters for each subquery.
    // The loop below is O(ParamPositions) total, so it should be quite cheap.
    while(*ParamPosId < Stmt->Query.ParamPositions.elements)
    {
        MADB_GetDynamic(&Stmt->Query.ParamPositions, &ParamIdx, *ParamPosId);
        if (ParamIdx >= (CurQuery + strlen(CurQuery) - Stmt->Query.RefinedText))
        {
            break;
        }
        ParamCount++;
        (*ParamPosId)++;
    }

    if (Stmt->ParamCount != ParamCount)
    {
        Stmt->ParamCount= (SQLSMALLINT)ParamCount;
        Stmt->params= (MYSQL_BIND*)MADB_REALLOC(Stmt->params, sizeof(MYSQL_BIND) * MADB_STMT_PARAM_COUNT(Stmt));
    }
    memset(Stmt->params, 0, sizeof(MYSQL_BIND) * MADB_STMT_PARAM_COUNT(Stmt));

    return 0;
}

typedef enum CspsControlFlowResult {
    CCFR_OK,
    CCFR_CONTINUE,
    CCFR_ERROR,

    CCFR_LAST
} CspsControlFlowResult;

static CspsControlFlowResult CspsInitStatementParams(   MADB_Stmt* const Stmt,
                                                        MADB_DynString* const query,
                                                        unsigned* const ErrorCount,
                                                        SQLRETURN* const ret,
                                                        const char* const CurQuery,
                                                        const unsigned ParamOffset,
                                                        const unsigned ParamSetIdx)
{
    // "... In an IPD, this SQLUINTEGER * header field points to a buffer containing the number
    //  of sets of parameters that have been processed, including error sets. ..."
    if (Stmt->Ipd->Header.RowsProcessedPtr) {
        (*Stmt->Ipd->Header.RowsProcessedPtr)++;
    }

    // If param set should be ignored, don't construct and don't run the query.
    if (Stmt->Apd->Header.ArrayStatusPtr &&
        Stmt->Apd->Header.ArrayStatusPtr[ParamSetIdx] == SQL_PARAM_IGNORE) {
        if (Stmt->Ipd->Header.ArrayStatusPtr) {
            Stmt->Ipd->Header.ArrayStatusPtr[ParamSetIdx] = SQL_PARAM_UNUSED;
        }
        return CCFR_CONTINUE;
    }

    // Insert params for this paramset.
    if (!SQL_SUCCEEDED(*ret = MADB_InsertParams(Stmt, CurQuery - Stmt->Query.RefinedText, ParamSetIdx, ParamOffset, query))) {
        return CCFR_ERROR;
    }

    if (Stmt->RebindParams && MADB_STMT_PARAM_COUNT(Stmt)) {
        Stmt->stmt->bind_param_done = 1;
        Stmt->RebindParams = FALSE;
    }

    return CCFR_OK;
}

static int CspsRunStatementQuery(   MADB_Stmt* const Stmt,
                                    const MADB_DynString* const query,
                                    unsigned* const ErrorCount,
                                    const unsigned ParamOffset)
{
    SQLRETURN ret= SQL_SUCCESS;

    // if we have SELECT query and several sets of parameters then we need to clear the result
    // returned for previous set of parameters
    if (mysql_field_count(Stmt->Connection->mariadb) > 0)
    {
      MYSQL_RES* res = mysql_use_result(Stmt->Connection->mariadb);
      mysql_free_result(res);
    }

    if (mysql_real_query(Stmt->stmt->mysql, query->str, query->length)) {
        ++*ErrorCount;
        ret = MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_DBC, Stmt->stmt->mysql);
    } else
    {
        // Update affected rows for queries which don't return results.
        if (mysql_field_count(Stmt->stmt->mysql) == 0)
        {
            Stmt->stmt->upsert_status.affected_rows += mysql_affected_rows(Stmt->stmt->mysql);
        }
    }

    // We need to unset InternalLength, i.e. reset dae length counters for next stmt.
    // However that length is not used anywhere, and is not clear what is it needed for
    ResetInternalLength(Stmt, ParamOffset);

    return ret;
}

static void CspsReceiveStatementResults(MADB_Stmt* const Stmt, SQLRETURN* const ret)
{
    // Free the previous result if there was any.
    // In case of a multistatement it's correct to pass CspsResult and stmt because they are pointing to the proper
    // multistatement result and multistatement, respectively.
    MADB_CspsFreeResult(Stmt, &Stmt->CspsResult, Stmt->stmt, FALSE);

    // If a query returns result, fetch the full result set.
    if (mysql_field_count(Stmt->stmt->mysql) > 0)
    {
        // The standard way to get the result after invoking mysql_real_query is to call either mysql_store_result
        // or mysql_use_result. mysql_store_result fully reads the result set which allows us to scroll over the
        // result set, get the number of affected rows, etc., but tracking updates is impossible unless the
        // statement is re-executed.
        // For the binary protocol the driver, regardless of the cursor type, invokes mysql_stmt_store_result
        // which loads the result set entirely.
        // However, according to the ODBC design, when the FORWARD-ONLY cursor is used, we should call
        // mysql_use_result instead and fetch rows directly from the database.
        // Supporting that would require some major changes to the driver. This is tracked in PLAT-5058.
        // Therefore, for now we treat FORWARD-ONLY cursor as a STATIC cursor with restrictions (i.e. it
        // fetches the full result set, iterates only in the forward direction, but does not track updates).
        // When the DYNAMIC cursor is used we fetch the entire result set and re-execute the statement on each
        // fetch to get updates.
        //
        // The client-side prepared statements will do the following:
        // 1. For a STATIC cursor we use mysql_store_result, don't update the result set and don't re-execute
        // the statement. Scrolling to any position is allowed.
        // 2. For a DYNAMIC cursor we also use mysql_store_result, re-execute the statement on every fetch and
        // allow scrolling to any position.
        // 3. For a FORWARD-ONLY cursor we use mysql_use_result when NO_CACHE option is set and
        // mysql_store_result when it is not, don't update the result set, and allow only
        // SQL_FETCH_NEXT direction.
        MYSQL_RES *cspsResult;
        if (NO_CACHE(Stmt))
        {
          cspsResult = mysql_use_result(Stmt->stmt->mysql);
        } else
        {
          cspsResult = mysql_store_result(Stmt->stmt->mysql);
        }
        if (mysql_errno(Stmt->stmt->mysql))
        {
          MADB_SetError(&Stmt->Error, MADB_ERR_HY001, mysql_error(Stmt->stmt->mysql), 
                            mysql_errno(Stmt->stmt->mysql));
          *ret = SQL_ERROR;
        }
        if (cspsResult != NULL)
        {
            MADB_CspsCopyResult(Stmt, cspsResult, Stmt->stmt);

            // VERY IMPORTANT to set this, otherwise binding fails and we cannot propagate the data to the client.
            Stmt->stmt->state = MYSQL_STMT_USE_OR_STORE_CALLED;

            // Save the result so it can be released later.
            Stmt->CspsResult = cspsResult;
        }
    }
    else // field_count is zero, so the query does not return a result.
    {
        // Update affected rows only if the statement does not return a result.
        if (SQL_SUCCEEDED(*ret) && !Stmt->MultiStmts)
        {
            Stmt->AffectedRows += mysql_stmt_affected_rows(Stmt->stmt);
        }
    }
}

static void CspsReceiveStatementResultsMulti(MADB_Stmt* const Stmt, unsigned int* const ErrorCount, SQLRETURN* const ret)
{
  int status = 0;
  int j;
  my_bool was_error_before = FALSE;

  for (j = 0; j < Stmt->Apd->Header.ArraySize; ++j)
  {
      status = (j == 0) ? 0 : mysql_next_result(Stmt->stmt->mysql);
      if (status > 0 || !SQL_SUCCEEDED(*ret))
      {
          MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_DBC, Stmt->stmt->mysql);
          ++*ErrorCount;
      }
      CspsReceiveStatementResults(Stmt, ret);
      if (Stmt->Ipd->Header.ArrayStatusPtr)
      {
          // Update the Ipd status only if the corresponding Apd parameter shouldn't be ignored.
          // If it should be ignored, the Ipd status should be set by now.
          if (!Stmt->Apd->Header.ArrayStatusPtr ||
                  Stmt->Apd->Header.ArrayStatusPtr[j] != SQL_PARAM_IGNORE)
          {
              if (status > 0)
              {
                  Stmt->Ipd->Header.ArrayStatusPtr[j] = SQL_PARAM_ERROR;
                  was_error_before = TRUE;
              }
              // SingleStore doesn't execute subsequent queries after an error occurred
              else if (was_error_before)
              {
                  Stmt->Ipd->Header.ArrayStatusPtr[j] = SQL_PARAM_DIAG_UNAVAILABLE;
              }
              else
              {
                  Stmt->Ipd->Header.ArrayStatusPtr[j] =
                      SQL_SUCCEEDED(*ret)  ? SQL_PARAM_SUCCESS : SQL_PARAM_ERROR;
              }
          }
      }
  }
}

/* {{{ MADB_StmtExecute */
SQLRETURN MADB_StmtExecute(MADB_Stmt *Stmt, BOOL ExecDirect)
{
  unsigned int          i;
  MYSQL_RES   *DefaultResult= NULL;
  SQLRETURN    ret=           SQL_SUCCESS;
  unsigned int ErrorCount=    0;
  unsigned int StatementNr;
  unsigned int ParamOffset=   0; /* for multi statements */
  SQLULEN      j, batchNum;
  /* For multistatement direct execution */
  char        *CurQuery= Stmt->Query.RefinedText, *QueriesEnd= Stmt->Query.RefinedText + Stmt->Query.RefinedLength;

  MDBUG_C_PRINT(Stmt->Connection, "%sMADB_StmtExecute", "\t->");

  MADB_CLEAR_ERROR(&Stmt->Error);

  if (Stmt->State == MADB_SS_EMULATED)
  {
    return MADB_ExecuteQuery(Stmt, STMT_STRING(Stmt), (SQLINTEGER)strlen(STMT_STRING(Stmt)));
  }

  if (MADB_POSITIONED_COMMAND(Stmt))
  {
      return MADB_ExecutePositionedUpdate(Stmt, ExecDirect);
  }

  /* Stmt->params was allocated during prepare, but could be cleared
     by SQLResetStmt. In latter case we need to allocate it again */
  if (!Stmt->params &&
    !(Stmt->params = (MYSQL_BIND *)MADB_CALLOC(sizeof(MYSQL_BIND) * MADB_STMT_PARAM_COUNT(Stmt))))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (MADB_SSPS_DISABLED(Stmt))
  {
      LOCK_MARIADB(Stmt->Connection);
      Stmt->AffectedRows = 0;

      if (Stmt->Ipd->Header.RowsProcessedPtr)
      {
          *Stmt->Ipd->Header.RowsProcessedPtr= 0;
      }

      unsigned int ParamPosId = 0;

      for (StatementNr= 0; StatementNr < STMT_COUNT(Stmt->Query); ++StatementNr)
      {
          if (QUERY_IS_MULTISTMT(Stmt->Query)
              && CspsInitStatementFromMultistatement(Stmt, StatementNr, CurQuery, QueriesEnd, &ParamPosId))
          {
              continue; /* bad statement - skip it */
          }

          int numParamRows = Stmt->ParamCount > 0 ? Stmt->Apd->Header.ArraySize : 1;
          // We want to send queries of the form INSERT INTO <tbl_name> [<columns_list>] VALUES (?,...)
          // as one query with a list of VALUES tuples, e.g. INSERT INTO t VALUES (1, 'i'), (2, 'j'), (3, 'k')
          // TODO: allow ON DUPLICATE KEY UPDATE
          // TODO: allow QUERY_IS_MULTISTMT == true
          my_bool rewriteInsert = numParamRows > 1 && Stmt->Query.QueryType == MADB_QUERY_INSERT && \
            MADB_FindToken(&Stmt->Query, "VALUES") && \
            !MADB_FindToken(&Stmt->Query, "RETURNING") && \
            MADB_FindToken(&Stmt->Query, "VALUES") < MADB_FindToken(&Stmt->Query, "?") && \
            !MADB_FindToken(&Stmt->Query, "ON DUPLICATE KEY UPDATE") && \
            !QUERY_IS_MULTISTMT(Stmt->Query);

          if (rewriteInsert)
          {
            long rowsInBatch = S2_MAX_PARAMS / MADB_STMT_PARAM_COUNT(Stmt);
            unsigned int valuesOffest = MADB_FindToken(&Stmt->Query, "VALUES") + 6 /* strlen(VALUES) */;
            // we have to send not more than S2_MAX_PARAMS parameters in one query
            for (batchNum = 0; batchNum < (numParamRows + rowsInBatch - 1) / rowsInBatch; ++batchNum)
            {
              MADB_DynString combined_insert_query;
              MADB_InitDynamicString(&combined_insert_query, "", 1024, 1024);
              MADB_DynstrAppendMem(&combined_insert_query, MADB_Token(&Stmt->Query, 0), valuesOffest);
              for (j = batchNum * rowsInBatch; j < numParamRows && j < batchNum * rowsInBatch + rowsInBatch; ++j)
              {
                MADB_DynString final_query;
                MADB_InitDynamicString(&final_query, "", 1024, 1024);

                const CspsControlFlowResult InitParamsRes
                        = CspsInitStatementParams(Stmt, &final_query, &ErrorCount, &ret, CurQuery, ParamOffset, j);
                switch(InitParamsRes) {
                case CCFR_OK:
                    break;
                case CCFR_CONTINUE:
                    MADB_DynstrFree(&final_query);
                    continue;
                case CCFR_ERROR:
                    MADB_DynstrFree(&final_query);
                    MADB_DynstrFree(&combined_insert_query);
                    goto end;
                default:
                    assert(0);
                    break;
                }
                if (final_query.length > 0)
                {
                    if (j % rowsInBatch != 0) MADB_DynstrAppend(&combined_insert_query, ",");
                    MADB_DynstrAppend(&combined_insert_query, final_query.str + valuesOffest);
                }
                MADB_DynstrFree(&final_query);
              }
              MDBUG_C_PRINT(Stmt->Connection, "Running INSERT statement with %d rows", j - batchNum * rowsInBatch);
              ret = CspsRunStatementQuery(Stmt, &combined_insert_query, &ErrorCount, ParamOffset);
              if (Stmt->Ipd->Header.ArrayStatusPtr)
              {
                for (j = batchNum * rowsInBatch; j < numParamRows && j < batchNum * rowsInBatch + rowsInBatch; ++j)
                {
                  if (!Stmt->Apd->Header.ArrayStatusPtr || Stmt->Apd->Header.ArrayStatusPtr[j] != SQL_PARAM_IGNORE)
                  {
                      Stmt->Ipd->Header.ArrayStatusPtr[j] = SQL_SUCCEEDED(ret) ? SQL_PARAM_SUCCESS : SQL_PARAM_ERROR;
                  }
                }
              }
              MADB_DynstrFree(&combined_insert_query);
            }
            Stmt->AffectedRows = mysql_stmt_affected_rows(Stmt->stmt);
            if (ret == SQL_ERROR)
            {
              ErrorCount = numParamRows;
            }
          }
          else
          {
              for (j = 0; j < numParamRows; ++j)
              {
                  MADB_DynString final_query;
                  MADB_InitDynamicString(&final_query, "", 1024, 1024);

                  const CspsControlFlowResult InitParamsRes
                          = CspsInitStatementParams(Stmt, &final_query, &ErrorCount, &ret, CurQuery, ParamOffset, j);
                  switch(InitParamsRes) {
                  case CCFR_OK:
                      break;
                  case CCFR_CONTINUE:
                      MADB_DynstrFree(&final_query);
                      continue;
                  case CCFR_ERROR:
                      MADB_DynstrFree(&final_query);
                      goto end;
                  default:
                      assert(0);
                      break;
                  }
                  ret = CspsRunStatementQuery(Stmt, &final_query, &ErrorCount, ParamOffset);

                  if (Stmt->Ipd->Header.ArrayStatusPtr)
                  {
                      // Update the Ipd status only if the corresponding Apd parameter shouldn't be ignored.
                      // If it should be ignored, the Ipd status should be set by now.
                      if (!Stmt->Apd->Header.ArrayStatusPtr ||
                              Stmt->Apd->Header.ArrayStatusPtr[j] != SQL_PARAM_IGNORE)
                      {
                          Stmt->Ipd->Header.ArrayStatusPtr[j] =
                                  SQL_SUCCEEDED(ret) ?
                                          SQL_PARAM_SUCCESS :
                                          (j == Stmt->Apd->Header.ArraySize - 1) ?
                                                  SQL_PARAM_ERROR :
                                                  SQL_PARAM_DIAG_UNAVAILABLE;
                      }
                  }
                  MADB_DynstrFree(&final_query);
              }
              CspsReceiveStatementResults(Stmt, &ret);
          }

          // Move forward to the next subquery in the multistatement.
          if (QUERY_IS_MULTISTMT(Stmt->Query))
          {
              ParamOffset += MADB_STMT_PARAM_COUNT(Stmt);
              CurQuery += strlen(CurQuery) + 1;

              // Store the result in the appropriate multistatement.
              Stmt->CspsMultiStmtResult[StatementNr] = Stmt->CspsResult;
              Stmt->CspsResult = NULL;
          }
      }

      if (Stmt->MultiStmts)
      {
          Stmt->MultiStmtNr= 0;
          MADB_InstallStmt(Stmt, Stmt->MultiStmts[Stmt->MultiStmtNr]);
          Stmt->CspsResult = Stmt->CspsMultiStmtResult[Stmt->MultiStmtNr];
      } else if (mysql_stmt_field_count(Stmt->stmt) > 0)
      {
          // IMPORTANT: reset result structures only AFTER Stmt->stmt->field_count is set, otherwise we're doomed
          // to memory leaks and segfaults. Internally it reallocs the memory proportional to the field_count,
          // so we must be sure that the field_count value is up to date.
          MADB_StmtResetResultStructures(Stmt);

          // Set the field metadata.
          MADB_DescSetIrdMetadata(Stmt, mysql_fetch_fields(FetchMetadata(Stmt)), mysql_stmt_field_count(Stmt->stmt));

          Stmt->AffectedRows= -1;
      }

      Stmt->State = MADB_SS_EXECUTED;

      goto end;
  }

  /* Normally this check is done by a DM. We are doing that too, keeping in mind direct linking.
     If exectution routine called from the SQLParamData, DataExecutionType has been reset */
  if (Stmt->Status == SQL_NEED_DATA && !DAE_DONE(Stmt))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY010, NULL, 0);
  }

  LOCK_MARIADB(Stmt->Connection);
  Stmt->AffectedRows= 0;

  if (Stmt->Ipd->Header.RowsProcessedPtr)
  {
    *Stmt->Ipd->Header.RowsProcessedPtr= 0;
  }

  for (StatementNr= 0; StatementNr < STMT_COUNT(Stmt->Query); ++StatementNr)
  {
    if (QUERY_IS_MULTISTMT(Stmt->Query))
    {
      if (Stmt->MultiStmts && Stmt->MultiStmts[StatementNr] != NULL)
      {
        Stmt->stmt= Stmt->MultiStmts[StatementNr];
        if (CurQuery >= QueriesEnd)
        {
          /* Something went wrong(with parsing). But we've got here, and everything worked. Giving it chance to fail later.
             This shouldn't really happen */
          MDBUG_C_PRINT(Stmt->Connection, "Got past end of query direct-executing %s on stmt #%u", Stmt->Query.RefinedText, StatementNr);
          continue;
        }

        if (StatementNr != 0)
        {
          if (mysql_stmt_prepare(Stmt->stmt, CurQuery, (unsigned long)strlen(CurQuery)))
          {
            return MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_STMT, Stmt->stmt);
          }
        }

        CurQuery+= strlen(CurQuery) + 1;
      }
      else
      {
        /* We have direct execution, since otherwise Stmt->MultiStmts would be set */
        if (CurQuery >= QueriesEnd)
        {
          /* Something went wrong(with parsing). But we've got here, and everything worked. Giving it chance to fail later.
             This shouldn't really happen */
          MDBUG_C_PRINT(Stmt->Connection, "Got past end of query direct-executing %s on stmt #%u", Stmt->Query.RefinedText, StatementNr);
          continue;
        }
        if (StatementNr > 0)
        {
          Stmt->stmt= MADB_NewStmtHandle(Stmt);
        }
        else
        {
          Stmt->MultiStmts= (MYSQL_STMT **)MADB_CALLOC(sizeof(MYSQL_STMT) * STMT_COUNT(Stmt->Query));
        }

        Stmt->MultiStmts[StatementNr]= Stmt->stmt;

        if (mysql_stmt_prepare(Stmt->stmt, CurQuery, (unsigned long)strlen(CurQuery)))
        {
          return MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_STMT, Stmt->stmt);
        }
        CurQuery+= strlen(CurQuery) + 1;
      }
      
      Stmt->RebindParams= TRUE;

      if (Stmt->ParamCount != mysql_stmt_param_count(Stmt->stmt))
      {
        Stmt->ParamCount= (SQLSMALLINT)mysql_stmt_param_count(Stmt->stmt);
        Stmt->params= (MYSQL_BIND*)MADB_REALLOC(Stmt->params, sizeof(MYSQL_BIND) * MADB_STMT_PARAM_COUNT(Stmt));
      }

      memset(Stmt->params, 0, sizeof(MYSQL_BIND) * MADB_STMT_PARAM_COUNT(Stmt));
    }

    /* Convert and bind parameters */
    for (j= 0; j < Stmt->Apd->Header.ArraySize; ++j)
    {
      /* "... In an IPD, this SQLUINTEGER * header field points to a buffer containing the number
         of sets of parameters that have been processed, including error sets. ..." */
      if (Stmt->Ipd->Header.RowsProcessedPtr)
      {
        *Stmt->Ipd->Header.RowsProcessedPtr= *Stmt->Ipd->Header.RowsProcessedPtr + 1;
      }

      if (Stmt->Apd->Header.ArrayStatusPtr &&
        Stmt->Apd->Header.ArrayStatusPtr[j] == SQL_PARAM_IGNORE)
      {
        if (Stmt->Ipd->Header.ArrayStatusPtr)
        {
          Stmt->Ipd->Header.ArrayStatusPtr[j]= SQL_PARAM_UNUSED;
        }
        continue;
      }

      for (i= ParamOffset; i < ParamOffset + MADB_STMT_PARAM_COUNT(Stmt); ++i)
      {
        MADB_DescRecord *ApdRecord, *IpdRecord;

        if ((ApdRecord= MADB_DescGetInternalRecord(Stmt->Apd, i, MADB_DESC_READ)) &&
          (IpdRecord= MADB_DescGetInternalRecord(Stmt->Ipd, i, MADB_DESC_READ)))
        {
          /* check if parameter was bound */
          if (!ApdRecord->inUse)
          {
            ret= SetUnboundParameterError(Stmt);
            goto end;
          }

          if (MADB_ConversionSupported(ApdRecord, IpdRecord) == FALSE)
          {
            ret= MADB_SetError(&Stmt->Error, MADB_ERR_07006, NULL, 0);
            goto end;
          }

          Stmt->params[i-ParamOffset].length= NULL;

          ret= MADB_C2SQL(Stmt, ApdRecord, IpdRecord, j, &Stmt->params[i-ParamOffset]);
          if (!SQL_SUCCEEDED(ret))
          {
            goto end;
          }
        }
      }                 /* End of for() on parameters */

      if (Stmt->RebindParams && MADB_STMT_PARAM_COUNT(Stmt))
      {
        Stmt->stmt->bind_param_done= 1;
        Stmt->RebindParams= FALSE;
      }

      ret= MADB_DoExecute(Stmt);

      if (!SQL_SUCCEEDED(ret))
      {
        ++ErrorCount;
      }
      /* We need to unset InternalLength, i.e. reset dae length counters for next stmt.
         However that length is not used anywhere, and is not clear what is it needed for */
      ResetInternalLength(Stmt, ParamOffset);

      if (Stmt->Ipd->Header.ArrayStatusPtr)
      {
        Stmt->Ipd->Header.ArrayStatusPtr[j]= SQL_SUCCEEDED(ret) ? SQL_PARAM_SUCCESS :
          (j == Stmt->Apd->Header.ArraySize - 1) ? SQL_PARAM_ERROR : SQL_PARAM_DIAG_UNAVAILABLE;
      }
      if (!mysql_stmt_field_count(Stmt->stmt) && SQL_SUCCEEDED(ret) && !Stmt->MultiStmts)
      {
        Stmt->AffectedRows+= mysql_stmt_affected_rows(Stmt->stmt);
      }
      if (!SQL_SUCCEEDED(ret) && j == Stmt->Apd->Header.ArraySize)
      {
        goto end;
      }
    }     /* End of for() thru paramsets(parameters array) */

    if (QUERY_IS_MULTISTMT(Stmt->Query))
    {
      /* If we optimize memory allocation, then we will need to free bulk operation data here(among other places) */
      /* MADB_CleanBulkOperData(Stmt, ParamOffset); */
      ParamOffset+= MADB_STMT_PARAM_COUNT(Stmt);

      if (!NO_CACHE(Stmt) && mysql_stmt_field_count(Stmt->stmt))
      {
        mysql_stmt_store_result(Stmt->stmt);
      }
    }
  }       /* End of for() on statements(Multistatmt) */

  if (Stmt->MultiStmts)
  {
    Stmt->MultiStmtNr= 0;
    MADB_InstallStmt(Stmt, Stmt->MultiStmts[Stmt->MultiStmtNr]);
  }
  else if (mysql_stmt_field_count(Stmt->stmt) > 0)
  {
    MADB_StmtResetResultStructures(Stmt);

    /*************************** mysql_stmt_store_result ******************************/
    /*If we did OUT params already, we should not store */
    if (Stmt->State == MADB_SS_EXECUTED && !NO_CACHE(Stmt) && mysql_stmt_store_result(Stmt->stmt) != 0)
    {
      UNLOCK_MARIADB(Stmt->Connection);
      if (DefaultResult)
      {
        mysql_free_result(DefaultResult);
      }

      return MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_STMT, Stmt->stmt);
    }
    
    /* I don't think we can reliably establish the fact that we do not need to re-fetch the metadata, thus we are re-fetching always
       The fact that we have resultset has been established above in "if" condition(fields count is > 0) */
    MADB_DescSetIrdMetadata(Stmt, mysql_fetch_fields(FetchMetadata(Stmt)), mysql_stmt_field_count(Stmt->stmt));

    Stmt->AffectedRows= -1;
  }
end:
  UNLOCK_MARIADB(Stmt->Connection);
  Stmt->LastRowFetched= 0;

  if (DefaultResult)
    mysql_free_result(DefaultResult);

  if (ErrorCount)
  {
    if (ErrorCount < Stmt->Apd->Header.ArraySize)
      ret= SQL_SUCCESS_WITH_INFO;
    else
      ret= SQL_ERROR;
  }
  if (SQL_SUCCEEDED(ret)) return ret;
  /* In case statement is not supported, we use mysql_query instead. */
  /* Sometimes SingleStore returns this error only at the execute stage, */
  /* prepare can be successful */
  if (Stmt->Error.NativeError == 1295 /*ER_UNSUPPORTED_PS*/)
  {
    Stmt->State= MADB_SS_EMULATED;
    return Stmt->Methods->Execute(Stmt, ExecDirect);
  }

  return ret;
}
/* }}} */

/* {{{ MADB_StmtBindCol */
SQLRETURN MADB_StmtBindCol(MADB_Stmt *Stmt, SQLUSMALLINT ColumnNumber, SQLSMALLINT TargetType,
    SQLPOINTER TargetValuePtr, SQLLEN BufferLength, SQLLEN *StrLen_or_Ind)
{
  MADB_Desc *Ard= Stmt->Ard;
  MADB_DescRecord *Record;

  if ((ColumnNumber < 1 && Stmt->Options.UseBookmarks == SQL_UB_OFF) || 
      (mysql_stmt_field_count(Stmt->stmt) &&
       Stmt->stmt->state > MYSQL_STMT_PREPARED && 
       ColumnNumber > mysql_stmt_field_count(Stmt->stmt)))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07009, NULL, 0);
    return SQL_ERROR;
  }

  /* Bookmark */
  if (ColumnNumber == 0)
  {
    if (TargetType == SQL_C_BOOKMARK || TargetType == SQL_C_VARBOOKMARK)
    {
      Stmt->Options.BookmarkPtr=     TargetValuePtr;
      Stmt->Options.BookmarkLength = BufferLength;
      Stmt->Options.BookmarkType=    TargetType;
      return SQL_SUCCESS;
    }
    MADB_SetError(&Stmt->Error, MADB_ERR_07006, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (!(Record= MADB_DescGetInternalRecord(Ard, ColumnNumber - 1, MADB_DESC_WRITE)))
  {
    MADB_CopyError(&Stmt->Error, &Ard->Error);
    return Stmt->Error.ReturnValue;
  }

  /* check if we need to unbind and delete a record */
  if (!TargetValuePtr && !StrLen_or_Ind)
  {
    int i;
    Record->inUse= 0;
    /* Update counter */
    for (i= Ard->Records.elements; i > 0; i--)
    {
      MADB_DescRecord *Rec= MADB_DescGetInternalRecord(Ard, i-1, MADB_DESC_READ);
      if (Rec && Rec->inUse)
      {
        Ard->Header.Count= i;
        return SQL_SUCCESS;
      }
    }
    Ard->Header.Count= 0;
    return SQL_SUCCESS;
  }

  if (!SQL_SUCCEEDED(MADB_DescSetField(Ard, ColumnNumber, SQL_DESC_TYPE, (SQLPOINTER)(SQLLEN)TargetType, SQL_IS_SMALLINT, 0)) ||
      !SQL_SUCCEEDED(MADB_DescSetField(Ard, ColumnNumber, SQL_DESC_OCTET_LENGTH_PTR, (SQLPOINTER)StrLen_or_Ind, SQL_IS_POINTER, 0)) ||
      !SQL_SUCCEEDED(MADB_DescSetField(Ard, ColumnNumber, SQL_DESC_INDICATOR_PTR, (SQLPOINTER)StrLen_or_Ind, SQL_IS_POINTER, 0)) ||
      !SQL_SUCCEEDED(MADB_DescSetField(Ard, ColumnNumber, SQL_DESC_OCTET_LENGTH, (SQLPOINTER)MADB_GetTypeLength(TargetType, BufferLength), SQL_IS_INTEGER, 0)) ||
      !SQL_SUCCEEDED(MADB_DescSetField(Ard, ColumnNumber, SQL_DESC_DATA_PTR, TargetValuePtr, SQL_IS_POINTER, 0)))
  {
    MADB_CopyError(&Stmt->Error, &Ard->Error);
    return Stmt->Error.ReturnValue;
  }
   
  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_StmtBindParam */
SQLRETURN MADB_StmtBindParam(MADB_Stmt *Stmt,  SQLUSMALLINT ParameterNumber,
                             SQLSMALLINT InputOutputType, SQLSMALLINT ValueType,
                             SQLSMALLINT ParameterType, SQLULEN ColumnSize,
                             SQLSMALLINT DecimalDigits, SQLPOINTER ParameterValuePtr,
                             SQLLEN BufferLength, SQLLEN *StrLen_or_IndPtr)
{
   MADB_Desc *Apd= Stmt->Apd, 
             *Ipd= Stmt->Ipd;
   MADB_DescRecord *ApdRecord, *IpdRecord;
   SQLRETURN ret= SQL_SUCCESS;

   MADB_CLEAR_ERROR(&Stmt->Error);
   if (!(ApdRecord= MADB_DescGetInternalRecord(Apd, ParameterNumber - 1, MADB_DESC_WRITE)))
   {
     MADB_CopyError(&Stmt->Error, &Apd->Error);
     return Stmt->Error.ReturnValue;
   }
   if (!(IpdRecord= MADB_DescGetInternalRecord(Ipd, ParameterNumber - 1, MADB_DESC_WRITE)))
   {
     MADB_CopyError(&Stmt->Error, &Ipd->Error);
     return Stmt->Error.ReturnValue;
   }

   // Release the data if it was bound by the DAE parameter.
   if (IpdRecord->DataPtr)
   {
       MADB_FREE(IpdRecord->DataPtr);
       IpdRecord->DataPtr = NULL;
       IpdRecord->OctetLength = IpdRecord->InternalLength = 0;
   }

   /* Map to the correspoinding type */
   if (ValueType == SQL_C_DEFAULT)
   {
     ValueType= MADB_GetDefaultType(ParameterType);
   }
   
   if (!(SQL_SUCCEEDED(MADB_DescSetField(Apd, ParameterNumber, SQL_DESC_CONCISE_TYPE, (SQLPOINTER)(SQLLEN)ValueType, SQL_IS_SMALLINT, 0))) ||
       !(SQL_SUCCEEDED(MADB_DescSetField(Apd, ParameterNumber, SQL_DESC_OCTET_LENGTH_PTR, (SQLPOINTER)StrLen_or_IndPtr, SQL_IS_POINTER, 0))) ||
       !(SQL_SUCCEEDED(MADB_DescSetField(Apd, ParameterNumber, SQL_DESC_OCTET_LENGTH, (SQLPOINTER)MADB_GetTypeLength(ValueType, BufferLength), SQL_IS_INTEGER, 0))) ||
       !(SQL_SUCCEEDED(MADB_DescSetField(Apd, ParameterNumber, SQL_DESC_INDICATOR_PTR, (SQLPOINTER)StrLen_or_IndPtr, SQL_IS_POINTER, 0))) ||
       !(SQL_SUCCEEDED(MADB_DescSetField(Apd, ParameterNumber, SQL_DESC_DATA_PTR, ParameterValuePtr, SQL_IS_POINTER, 0))))
   {
     MADB_CopyError(&Stmt->Error, &Apd->Error);
     return Stmt->Error.ReturnValue;
   }

   if (!(SQL_SUCCEEDED(MADB_DescSetField(Ipd, ParameterNumber, SQL_DESC_CONCISE_TYPE, (SQLPOINTER)(SQLLEN)ParameterType, SQL_IS_SMALLINT, 0))) ||
       !(SQL_SUCCEEDED(MADB_DescSetField(Ipd, ParameterNumber, SQL_DESC_PARAMETER_TYPE, (SQLPOINTER)(SQLLEN)InputOutputType, SQL_IS_SMALLINT, 0))))
   {
     MADB_CopyError(&Stmt->Error, &Ipd->Error);
     return Stmt->Error.ReturnValue;
   }

   switch(ParameterType) {
   case SQL_BINARY:
   case SQL_VARBINARY:
   case SQL_LONGVARBINARY:
   case SQL_CHAR:
   case SQL_VARCHAR:
   case SQL_LONGVARCHAR:
   case SQL_WCHAR:
   case SQL_WLONGVARCHAR:
   case SQL_WVARCHAR:
     ret= MADB_DescSetField(Ipd, ParameterNumber, SQL_DESC_LENGTH, (SQLPOINTER)ColumnSize, SQL_IS_INTEGER, 0);
     break;
   case SQL_FLOAT:
   case SQL_REAL:
   case SQL_DOUBLE:
     ret= MADB_DescSetField(Ipd, ParameterNumber, SQL_DESC_PRECISION, (SQLPOINTER)ColumnSize, SQL_IS_INTEGER, 0);
     break;
   case SQL_DECIMAL:
   case SQL_NUMERIC:
     ret= MADB_DescSetField(Ipd, ParameterNumber, SQL_DESC_PRECISION, (SQLPOINTER)ColumnSize, SQL_IS_SMALLINT, 0);
     if (SQL_SUCCEEDED(ret))
       ret= MADB_DescSetField(Ipd, ParameterNumber, SQL_DESC_SCALE, (SQLPOINTER)(SQLLEN)DecimalDigits, SQL_IS_SMALLINT, 0);
     break;
   case SQL_INTERVAL_MINUTE_TO_SECOND:
   case SQL_INTERVAL_HOUR_TO_SECOND:
   case SQL_INTERVAL_DAY_TO_SECOND:
   case SQL_INTERVAL_SECOND:
   case SQL_TYPE_TIMESTAMP:
   case SQL_TYPE_TIME:
     ret= MADB_DescSetField(Ipd, ParameterNumber, SQL_DESC_PRECISION, (SQLPOINTER)(SQLLEN)DecimalDigits, SQL_IS_SMALLINT, 0);
     break;
   }

   if(!SQL_SUCCEEDED(ret))
     MADB_CopyError(&Stmt->Error, &Ipd->Error);
   Stmt->RebindParams= TRUE;
   
   return ret;
 }
 /* }}} */

void MADB_InitStatusPtr(SQLUSMALLINT *Ptr, SQLULEN Size, SQLSMALLINT InitialValue)
{
  SQLULEN i;

  for (i=0; i < Size; i++)
    Ptr[i]= InitialValue;
}

/* Not used for now, but leaving it so far here - it may be useful */
/* BOOL MADB_NumericBufferType(SQLSMALLINT BufferType)
{
  switch (BufferType)
  {
  case SQL_C_TINYINT:
  case SQL_C_UTINYINT:
  case SQL_C_STINYINT:
  case SQL_C_SHORT:
  case SQL_C_SSHORT:
  case SQL_C_USHORT:
  case SQL_C_FLOAT:
  case SQL_C_LONG:
  case SQL_C_ULONG:
  case SQL_C_SLONG:
  case SQL_C_DOUBLE:
    return TRUE;
  default:
    return FALSE;
  }
}*/

/* {{{ MADB_BinaryFieldType */
BOOL MADB_BinaryFieldType(SQLSMALLINT FieldType)
{
  return FieldType == SQL_BINARY || FieldType == SQL_VARBINARY || FieldType == SQL_LONGVARBINARY || FieldType == SQL_BIT;
}
/* }}} */

/* {{{ MADB_PrepareBind
       Filling bind structures in */
SQLRETURN MADB_PrepareBind(MADB_Stmt *Stmt, int RowNumber)
{
  MADB_DescRecord *IrdRec, *ArdRec;
  int             i;
  void            *DataPtr= NULL;
  SQLSMALLINT     ConciseType;

  for (i= 0; i < MADB_STMT_COLUMN_COUNT(Stmt); ++i)
  {
    ArdRec= MADB_DescGetInternalRecord(Stmt->Ard, i, MADB_DESC_READ);
    if (ArdRec == NULL || !ArdRec->inUse)
    {      
      Stmt->result[i].flags|= MADB_BIND_DUMMY;
      continue;
    }

    DataPtr= (SQLLEN *)GetBindOffset(Stmt->Ard, ArdRec, ArdRec->DataPtr, RowNumber, ArdRec->OctetLength);

    MADB_FREE(ArdRec->InternalBuffer);
    if (!DataPtr)
    {
      Stmt->result[i].flags|= MADB_BIND_DUMMY;
      continue;
    }
    else
    {
      Stmt->result[i].flags&= ~MADB_BIND_DUMMY;
    }

    IrdRec= MADB_DescGetInternalRecord(Stmt->Ird, i, MADB_DESC_READ);
    /* assert(IrdRec != NULL) */

    /* We can't use application's buffer directly, as it has/can have different size, than C/C needs */
    Stmt->result[i].length= &Stmt->result[i].length_value;

    ConciseType = ArdRec->ConciseType;
    if (ConciseType == SQL_C_DEFAULT)
    {
      ConciseType = MADB_GetDefaultType(IrdRec->ConciseType);
    }
    switch(ConciseType) {
    case SQL_C_WCHAR:
      /* In worst case for 2 bytes of UTF16 in result, we need 3 bytes of utf8.
          For ASCII  we need 2 times less(for 2 bytes of UTF16 - 1 byte UTF8,
          in other cases we need same 2 of 4 bytes. */
      ArdRec->InternalBuffer=        (char *)MADB_CALLOC((size_t)((ArdRec->OctetLength)*1.5));
      Stmt->result[i].buffer=        ArdRec->InternalBuffer;
      Stmt->result[i].buffer_length= (unsigned long)(ArdRec->OctetLength*1.5);
      Stmt->result[i].buffer_type=   MYSQL_TYPE_STRING;
      break;
    case SQL_C_CHAR:
      Stmt->result[i].buffer=        DataPtr;
      Stmt->result[i].buffer_length= (unsigned long)ArdRec->OctetLength;
      Stmt->result[i].buffer_type=   MYSQL_TYPE_STRING;
      break;
    case SQL_C_NUMERIC:
      MADB_FREE(ArdRec->InternalBuffer);
      Stmt->result[i].buffer_length= MADB_DEFAULT_PRECISION + 1/*-*/ + 1/*.*/;
      ArdRec->InternalBuffer=       (char *)MADB_CALLOC(Stmt->result[i].buffer_length);
      Stmt->result[i].buffer=        ArdRec->InternalBuffer;
      
      Stmt->result[i].buffer_type=   MYSQL_TYPE_STRING;
      break;
    case SQL_TYPE_TIMESTAMP:
    case SQL_TYPE_DATE:
    case SQL_TYPE_TIME:
    case SQL_C_TIMESTAMP:
    case SQL_C_TIME:
    case SQL_C_DATE:
      MADB_FREE(ArdRec->InternalBuffer);
      if (IrdRec->ConciseType == SQL_CHAR || IrdRec->ConciseType == SQL_VARCHAR)
      {
        ArdRec->InternalBuffer= (char *)MADB_CALLOC(Stmt->stmt->fields[i].max_length + 1);
        if (ArdRec->InternalBuffer == NULL)
        {
          return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
        }
        Stmt->result[i].buffer=        ArdRec->InternalBuffer;
        Stmt->result[i].buffer_type=   MYSQL_TYPE_STRING;
        Stmt->result[i].buffer_length= Stmt->stmt->fields[i].max_length + 1;
      }
      else
      {
        ArdRec->InternalBuffer=       (char *)MADB_CALLOC(sizeof(MYSQL_TIME));
        Stmt->result[i].buffer=        ArdRec->InternalBuffer;
        Stmt->result[i].buffer_length= sizeof(MYSQL_TIME);
        Stmt->result[i].buffer_type=   MYSQL_TYPE_TIMESTAMP;
      }
      break;
    case SQL_C_INTERVAL_HOUR_TO_MINUTE:
    case SQL_C_INTERVAL_HOUR_TO_SECOND:
      {
        MYSQL_FIELD *Field= mysql_fetch_field_direct(Stmt->metadata, i);
        MADB_FREE(ArdRec->InternalBuffer);
        if (IrdRec->ConciseType == SQL_CHAR || IrdRec->ConciseType == SQL_VARCHAR)
        {
          ArdRec->InternalBuffer= (char *)MADB_CALLOC(Stmt->stmt->fields[i].max_length + 1);
          if (ArdRec->InternalBuffer == NULL)
          {
            return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          }
          Stmt->result[i].buffer=        ArdRec->InternalBuffer;
          Stmt->result[i].buffer_type=   MYSQL_TYPE_STRING;
          Stmt->result[i].buffer_length= Stmt->stmt->fields[i].max_length + 1;
        }
        else
        {
          ArdRec->InternalBuffer=       (char *)MADB_CALLOC(sizeof(MYSQL_TIME));
          Stmt->result[i].buffer=        ArdRec->InternalBuffer;
          Stmt->result[i].buffer_length= sizeof(MYSQL_TIME);
          Stmt->result[i].buffer_type=   Field && Field->type == MYSQL_TYPE_TIME ? MYSQL_TYPE_TIME : MYSQL_TYPE_TIMESTAMP;
        }
      }
      break;
    case SQL_C_BIT:
      MADB_FREE(ArdRec->InternalBuffer);
      ArdRec->InternalBuffer=        (char *)MADB_CALLOC(8);
      Stmt->result[i].buffer=        ArdRec->InternalBuffer;
      Stmt->result[i].buffer_length= 8;
      Stmt->result[i].buffer_type=   MYSQL_TYPE_LONGLONG;
      break;
    case SQL_C_TINYINT:
    case SQL_C_UTINYINT:
    case SQL_C_STINYINT:
    case SQL_C_SHORT:
    case SQL_C_SSHORT:
    case SQL_C_USHORT:
    case SQL_C_FLOAT:
    case SQL_C_LONG:
    case SQL_C_ULONG:
    case SQL_C_SLONG:
    case SQL_C_DOUBLE:
      if (MADB_BinaryFieldType(IrdRec->ConciseType))
      {
        /* To keep things simple - we will use internal buffer of the column size, and later(in the MADB_FixFetchedValues) will copy (correct part of)
           it to the application's buffer taking care of endianness. Perhaps it'd be better just not to support this type of conversion */
        MADB_FREE(ArdRec->InternalBuffer);
        ArdRec->InternalBuffer=        (char *)MADB_CALLOC(MIN(IrdRec->OctetLength, ArdRec->OctetLength));
        Stmt->result[i].buffer=        ArdRec->InternalBuffer;
        Stmt->result[i].buffer_length= (unsigned long)MIN(IrdRec->OctetLength, ArdRec->OctetLength);
        Stmt->result[i].buffer_type=   MYSQL_TYPE_BLOB;
        break;
      }
      /* else {we are falling through below} */
    default:
      if (!MADB_CheckODBCType(ConciseType))
      {
        return MADB_SetError(&Stmt->Error, MADB_ERR_07006, NULL, 0);
      }
      Stmt->result[i].buffer_length= (unsigned long)ArdRec->OctetLength;
      Stmt->result[i].buffer=        DataPtr;
      Stmt->result[i].buffer_type=   MADB_GetMaDBTypeAndLength(ConciseType,
                                                            &Stmt->result[i].is_unsigned,
                                                            &Stmt->result[i].buffer_length);
      break;
    }
  }

  return SQL_SUCCESS;
}
/* }}} */

/* {{{ LittleEndian */
char LittleEndian()
{
  int   x= 1;
  char *c= (char*)&x;

  return *c;
}
/* }}} */

/* {{{ SwitchEndianness */
void SwitchEndianness(char *Src, SQLLEN SrcBytes, char *Dst, SQLLEN DstBytes)
{
  /* SrcBytes can only be less or equal DstBytes */
  while (SrcBytes--)
  {
    *Dst++= *(Src + SrcBytes);
  }
}
/* }}} */

#define CALC_ALL_FLDS_RC(_agg_rc, _field_rc) if (_field_rc != SQL_SUCCESS && _agg_rc != SQL_ERROR) _agg_rc= _field_rc

/* {{{ MADB_FixFetchedValues 
       Converting and/or fixing fetched values if needed */
SQLRETURN MADB_FixFetchedValues(MADB_Stmt *Stmt, int RowNumber, MYSQL_ROW_OFFSET SaveCursor)
{
  MADB_DescRecord *IrdRec, *ArdRec;
  int             i;
  SQLLEN          *IndicatorPtr= NULL, *LengthPtr= NULL, Dummy= 0;
  void            *DataPtr=      NULL;
  SQLRETURN       rc= SQL_SUCCESS, FieldRc;

  for (i= 0; i < MADB_STMT_COLUMN_COUNT(Stmt); ++i)
  {
    if ((ArdRec= MADB_DescGetInternalRecord(Stmt->Ard, i, MADB_DESC_READ)) && ArdRec->inUse)
    {
      /* set indicator and dataptr */
      LengthPtr=    (SQLLEN *)GetBindOffset(Stmt->Ard, ArdRec, ArdRec->OctetLengthPtr, RowNumber, sizeof(SQLLEN));
      IndicatorPtr= (SQLLEN *)GetBindOffset(Stmt->Ard, ArdRec, ArdRec->IndicatorPtr,   RowNumber, sizeof(SQLLEN));
      DataPtr=      (SQLLEN *)GetBindOffset(Stmt->Ard, ArdRec, ArdRec->DataPtr,        RowNumber, ArdRec->OctetLength);

      if (LengthPtr == NULL)
      {
        LengthPtr= &Dummy;
      }
      /* clear IndicatorPtr */
      if (IndicatorPtr != NULL && IndicatorPtr != LengthPtr && *IndicatorPtr < 0)
      {
        *IndicatorPtr= 0;
      }

      IrdRec= MADB_DescGetInternalRecord(Stmt->Ird, i, MADB_DESC_READ);
      /* assert(IrdRec != NULL) */

      if (*Stmt->stmt->bind[i].is_null)
      {
        if (IndicatorPtr)
        {
          *IndicatorPtr= SQL_NULL_DATA;
        }
        else
        {
          if (SaveCursor)
          {
            mysql_stmt_row_seek(Stmt->stmt, SaveCursor);
          }
          rc= MADB_SetError(&Stmt->Error, MADB_ERR_22002, NULL, 0);
          continue;
        }
      }
      else
      {
        switch (ArdRec->ConciseType)
        {
        case SQL_C_BIT:
        {
          unsigned long long *p= (unsigned long long *)Stmt->result[i].buffer;
          memset(DataPtr, 0, ArdRec->OctetLength);
          *(char*)DataPtr = (char)(*p != 0);
        }
        break;
        case SQL_C_TYPE_TIMESTAMP:
        case SQL_C_TYPE_DATE:
        case SQL_C_TYPE_TIME:
        case SQL_C_TIMESTAMP:
        case SQL_C_TIME:
        case SQL_C_DATE:
          {
            MYSQL_TIME tm, *Intermidiate;

            if (IrdRec->ConciseType == SQL_CHAR || IrdRec->ConciseType == SQL_VARCHAR)
            {
              BOOL isTime;

              FieldRc= MADB_Str2Ts(ArdRec->InternalBuffer, *Stmt->stmt->bind[i].length, &tm, FALSE, &Stmt->Error, &isTime);
              if (SQL_SUCCEEDED(FieldRc))
              {
                Intermidiate= &tm;
              }
              else
              {
                CALC_ALL_FLDS_RC(rc, FieldRc);
                break;
              }
            }
            else
            {
              Intermidiate= (MYSQL_TIME *)ArdRec->InternalBuffer;
            }

            FieldRc= MADB_CopyMadbTimestamp(Stmt, Intermidiate, DataPtr, LengthPtr, IndicatorPtr, ArdRec->Type, IrdRec->ConciseType);
            CALC_ALL_FLDS_RC(rc, FieldRc);
          }
          break;
        case SQL_C_INTERVAL_HOUR_TO_MINUTE:
        case SQL_C_INTERVAL_HOUR_TO_SECOND:
        {
          MYSQL_TIME          *tm= (MYSQL_TIME*)ArdRec->InternalBuffer, ForConversion;
          SQL_INTERVAL_STRUCT *ts= (SQL_INTERVAL_STRUCT *)DataPtr;

          if (IrdRec->ConciseType == SQL_CHAR || IrdRec->ConciseType == SQL_VARCHAR)
          {
            BOOL isTime;

            FieldRc= MADB_Str2Ts(ArdRec->InternalBuffer, *Stmt->stmt->bind[i].length, &ForConversion, FALSE, &Stmt->Error, &isTime);
            if (SQL_SUCCEEDED(FieldRc))
            {
              tm= &ForConversion;
            }
            else
            {
              CALC_ALL_FLDS_RC(rc, FieldRc);
              break;
            }
          }

          /* If we have ts == NULL we (may) have tm also NULL, since we didn't really bind this column */
          if (ts != NULL)
          {
            if (tm->hour > 99999)
            {
              FieldRc= MADB_SetError(&Stmt->Error, MADB_ERR_22015, NULL, 0);
              CALC_ALL_FLDS_RC(rc, FieldRc);
              break;
            }

            ts->intval.day_second.hour= tm->hour;
            ts->intval.day_second.minute= tm->minute;
            ts->interval_sign= tm->neg ? SQL_TRUE : SQL_FALSE;

            if (ArdRec->Type == SQL_C_INTERVAL_HOUR_TO_MINUTE)
            {
              ts->intval.day_second.second= 0;
              ts->interval_type= SQL_INTERVAL_HOUR_TO_MINUTE;
              if (tm->second)
              {
                FieldRc= MADB_SetError(&Stmt->Error, MADB_ERR_01S07, NULL, 0);
                CALC_ALL_FLDS_RC(rc, FieldRc);
                break;
              }
            }
            else
            {
              ts->interval_type= SQL_INTERVAL_HOUR_TO_SECOND;
              ts->intval.day_second.second= tm->second;
            }
          }
          
          *LengthPtr= sizeof(SQL_INTERVAL_STRUCT);
        }
        break;
        case SQL_C_NUMERIC:
        {
          int rc= 0;
          MADB_CLEAR_ERROR(&Stmt->Error);
          if (DataPtr != NULL && Stmt->result[i].buffer_length < Stmt->stmt->fields[i].max_length)
          {
            MADB_SetError(&Stmt->Error, MADB_ERR_22003, NULL, 0);
            ArdRec->InternalBuffer[Stmt->result[i].buffer_length - 1]= 0;
            return Stmt->Error.ReturnValue;
          }

          if ((rc= MADB_CharToSQLNumeric(ArdRec->InternalBuffer, Stmt->Ard, ArdRec, NULL, RowNumber)))
          {
            MADB_SetError(&Stmt->Error, rc, NULL, 0);
          }
          /* TODO: why is it here individually for Numeric type?! */
          if (Stmt->Ard->Header.ArrayStatusPtr)
          {
            Stmt->Ard->Header.ArrayStatusPtr[RowNumber]= Stmt->Error.ReturnValue;
          }
          *LengthPtr= sizeof(SQL_NUMERIC_STRUCT);
        }
        break;
        case SQL_C_WCHAR:
        {
          SQLLEN CharLen= MADB_SetString(&Stmt->Connection->Charset, DataPtr, ArdRec->OctetLength, (char *)Stmt->result[i].buffer,
            *Stmt->stmt->bind[i].length, &Stmt->Error);
          /* Not quite right */
          *LengthPtr= CharLen * sizeof(SQLWCHAR);
        }
        break;

        case SQL_C_TINYINT:
        case SQL_C_UTINYINT:
        case SQL_C_STINYINT:
        case SQL_C_SHORT:
        case SQL_C_SSHORT:
        case SQL_C_USHORT:
        case SQL_C_FLOAT:
        case SQL_C_LONG:
        case SQL_C_ULONG:
        case SQL_C_SLONG:
        case SQL_C_DOUBLE:
          if (MADB_BinaryFieldType(IrdRec->ConciseType))
          {
            if (DataPtr != NULL)
            {
              if (Stmt->result[i].buffer_length >= (unsigned long)ArdRec->OctetLength)
              {
                if (!LittleEndian())
                {
                  /* We currently got the little-endian number. If we or big-endian machine, we need to switch bytes */
                  SwitchEndianness((char*)Stmt->result[i].buffer,
                    ArdRec->OctetLength,
                    (char*)DataPtr,
                    ArdRec->OctetLength);
                }
                else
                {
                  memcpy(DataPtr, Stmt->result[i].buffer, ArdRec->OctetLength);
                }
              }
              else
              {
                /* We won't write to the whole memory pointed by DataPtr, thus to need to zerofill prior to that */
                memset(DataPtr, 0, ArdRec->OctetLength);
                if (!LittleEndian())
                {
                  SwitchEndianness((char*)Stmt->result[i].buffer,
                    Stmt->result[i].buffer_length,
                    (char*)DataPtr + ArdRec->OctetLength - Stmt->result[i].buffer_length,
                    ArdRec->OctetLength);
                }
                else
                {
                  memcpy(DataPtr, Stmt->result[i].buffer, Stmt->result[i].buffer_length);
                }
              }
              *LengthPtr= *Stmt->stmt->bind[i].length;
            }
            break;
          }
          /* else {we are falling through below} */
        default:
          if (DataPtr != NULL)
          {
            if (Stmt->Ard->Header.ArraySize > 1)
            {
              if (Stmt->Ard->Header.BindType)
              {
                Stmt->result[i].buffer= (char *)Stmt->result[i].buffer + Stmt->Ard->Header.BindType;
              }
              else
              {
                Stmt->result[i].buffer = (char *)ArdRec->DataPtr + (RowNumber + 1) * ArdRec->OctetLength;
              }
            }
            *LengthPtr= *Stmt->stmt->bind[i].length;
          }
          break;
        }
      }
    }
  }

  return rc;
}
/* }}} */


SQLUSMALLINT MADB_MapToRowStatus(SQLRETURN rc)
{
  switch (rc)
  {
  case SQL_SUCCESS_WITH_INFO: return SQL_ROW_SUCCESS_WITH_INFO;
  case SQL_ERROR:             return SQL_ROW_ERROR;
  /* Assuming is that status array pre-filled with SQL_ROW_NOROW,
     and it never needs to be mapped to */
  }

  return SQL_ROW_SUCCESS;
}


void ResetDescIntBuffers(MADB_Desc *Desc)
{
  MADB_DescRecord *Rec;
  SQLSMALLINT i;

  for (i= 0; i < Desc->Header.Count; ++i)
  {
    Rec= MADB_DescGetInternalRecord(Desc, i, MADB_DESC_READ);
    if (Rec)
    {
      MADB_FREE(Rec->InternalBuffer);
    }
  }
}


/* {{{ MADB_FetchColumnCsps
 Fetches the column from the result set when only the client-side prepared statements are enabled.
 Don't call this directly and better use the MADB_StmtFetchColumn abstraction. */
SQLRETURN MADB_FetchColumnCsps(MADB_Stmt* Stmt, MYSQL_BIND *bind, unsigned int column, unsigned long offset)
{
    if (Stmt->stmt->state < MYSQL_STMT_USER_FETCHING || column >= Stmt->stmt->field_count ||
        Stmt->stmt->state == MYSQL_STMT_FETCH_DONE)
    {
        return MADB_SetError(&Stmt->Error, MADB_ERR_HY000, "Statement is in a wrong state when fetching a column", 0);
    }

    if (!Stmt->stmt->bind[column].u.row_ptr)
    {
        // We set row_ptr only for non-NULL columns, so this must be a NULL column.
        // is_null should be set by now, but setting it again to be fully sure.
        if (bind[0].is_null)
        {
            *bind[0].is_null = 1;
        }
        return SQL_SUCCESS;
    }

    if (bind[0].length)
    {
        *bind[0].length = *Stmt->stmt->bind[column].length;
    } else
    {
        bind[0].length = &Stmt->stmt->bind[column].length_value;
    }

    if (bind[0].is_null)
    {
        *bind[0].is_null = 0;
    } else
    {
        bind[0].is_null = &bind[0].is_null_value;
    }

    if (!bind[0].error)
    {
        bind[0].error = &bind[0].error_value;
    }
    *bind[0].error= 0;
    bind[0].offset= offset;

    return MADB_CspsConvertSql2C(Stmt, &Stmt->stmt->fields[column], bind, (char*)Stmt->stmt->bind[column].u.row_ptr, *Stmt->stmt->bind[column].length);
}
/* }}} */


/* {{{ FetchRowCsps
 Fetches the row from the result set.
 Always fetches the row the cursor is currently pointing to and moves the cursor to the next row. */
MYSQL_ROW FetchRowCsps(MADB_Stmt* Stmt, unsigned long **field_lengths)
{
  MYSQL_ROW row;
  if (NO_CACHE(Stmt))
  {
    row = mysql_fetch_row(Stmt->CspsResult);
    if (row == NULL)
    {
      Stmt->stmt->state= MYSQL_STMT_FETCH_DONE;
    }
    else
    {
      Stmt->stmt->state= MYSQL_STMT_USER_FETCHING;
    }

    if (mysql_errno(Stmt->stmt->mysql))
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY000, mysql_error(Stmt->stmt->mysql),
                    mysql_errno(Stmt->stmt->mysql));
      return NULL;
    }

    *field_lengths = mysql_fetch_lengths(Stmt->CspsResult);
    return row;
  }

  // For the STATIC and DYNAMIC cursors we already have all the data on the client side.
  if (!Stmt->stmt->result_cursor)
  {
    Stmt->stmt->state= MYSQL_STMT_FETCH_DONE;
    return NULL;
  }
  Stmt->stmt->state= MYSQL_STMT_USER_FETCHING;

  // Set the current_row because it is needed to fetch the fields' lengths.
  // Reset the current_row when done.
  Stmt->CspsResult->current_row = Stmt->stmt->result_cursor->data;
  *field_lengths = mysql_fetch_lengths(Stmt->CspsResult);
  Stmt->CspsResult->current_row = NULL;

  row= Stmt->stmt->result_cursor->data;
  Stmt->stmt->result_cursor= Stmt->stmt->result_cursor->next;

  return row;
}
/* }}} */


/* {{{ MADB_FetchCsps
 Fetches the row from the result set and stores it in the bound data buffers. */
SQLRETURN MADB_FetchCsps(MADB_Stmt *Stmt)
{
    MADB_DescRecord *ArdRec, *IrdRec;
    MYSQL_ROW row;
    unsigned int             i;
    int rc = SQL_SUCCESS;
    unsigned long *field_lengths;

    row = FetchRowCsps(Stmt, &field_lengths);
    if (row == NULL)
    {
      if (SQL_SUCCEEDED(Stmt->Error.ReturnValue))
      {
        return MYSQL_NO_DATA;
      }
      else
      {
        return 1;
      }
    }

    for (i = 0; i < Stmt->stmt->field_count; ++i)
    {
        if (!Stmt->stmt->bind[i].is_null)
        {
            Stmt->stmt->bind[i].is_null = &Stmt->stmt->bind[i].is_null_value;
        }
        if (!Stmt->stmt->bind[i].length)
        {
            Stmt->stmt->bind[i].length = &Stmt->stmt->bind[i].length_value;
        }

        if (row[i] == NULL)
        {
            *Stmt->stmt->bind[i].is_null = 1;
            continue;
        }

        *Stmt->stmt->bind[i].is_null = 0;
        Stmt->stmt->bind[i].u.row_ptr = (unsigned char*)row[i];

        if (Stmt->stmt->bind[i].flags & MADB_BIND_DUMMY)
        {
            // This column is not bound. The relevant row_ptr is stored in the corresponding bind object, so the
            // application will be able to fetch the data later.
            *Stmt->stmt->bind[i].length = field_lengths[i];
            continue;
        }

        int ret = MADB_CspsConvertSql2C(Stmt, &Stmt->stmt->fields[i], &Stmt->stmt->bind[i], row[i], field_lengths[i]);
        if (!SQL_SUCCEEDED(ret))
        {
            CALC_ALL_FLDS_RC(rc, ret);
        }
    }

    return rc;
}
/* }}} */


/* {{{ MADB_StmtFetchColumn
 Fetches the column from the result set. Every client should call this abstraction
 because it determines the proper function based on prepared statements mode.*/
SQLRETURN MADB_StmtFetchColumn(MADB_Stmt* Stmt, MYSQL_BIND *bind, unsigned int column, unsigned long offset)
{
    return MADB_SSPS_DISABLED(Stmt) || (Stmt->stmt->result.type == MYSQL_FAKE_RESULT) ? MADB_FetchColumnCsps(Stmt, bind, column, offset) :
           mysql_stmt_fetch_column(Stmt->stmt, bind, column, offset);
}
/* }}}*/


#undef CALC_ALL_FLDS_RC

/* For first row we just take its result as initial.
   For the rest, if all rows SQL_SUCCESS or SQL_ERROR - aggregated result is SQL_SUCCESS or SQL_ERROR, respectively
   Otherwise - SQL_SUCCESS_WITH_INFO */
#define CALC_ALL_ROWS_RC(_accumulated_rc, _cur_row_rc, _row_num)\
if      (_row_num == 0)                  _accumulated_rc= _cur_row_rc;\
else if (_cur_row_rc != _accumulated_rc) _accumulated_rc= SQL_SUCCESS_WITH_INFO

/* {{{ MADB_StmtFetch */
SQLRETURN MADB_StmtFetch(MADB_Stmt *Stmt)
{
  unsigned int     RowNum, j;
  SQLULEN          Rows2Fetch=  Stmt->Ard->Header.ArraySize, Processed, *ProcessedPtr= &Processed;
  MYSQL_ROW_OFFSET SaveCursor= NULL;
  SQLRETURN        Result= SQL_SUCCESS, RowResult, rc;

  MADB_CLEAR_ERROR(&Stmt->Error);

  if (!(MADB_STMT_COLUMN_COUNT(Stmt) > 0))
  {
    return MADB_SetError(&Stmt->Error, MADB_ERR_24000, NULL, 0);
  }

  if ((Stmt->Options.UseBookmarks == SQL_UB_VARIABLE && Stmt->Options.BookmarkType == SQL_C_BOOKMARK) ||
      (Stmt->Options.UseBookmarks != SQL_UB_VARIABLE && Stmt->Options.BookmarkType == SQL_C_VARBOOKMARK))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07006, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  /* We don't have much to do if ArraySize == 0 */
  if (Stmt->Ard->Header.ArraySize == 0)
  {
    return SQL_SUCCESS;
  }

  Stmt->LastRowFetched= 0;
  Stmt->Cursor.RowsetSize = Stmt->Ard->Header.ArraySize;
  Rows2Fetch= NO_CACHE(Stmt)?
                              // If we don't cache the result, we don't know
                              // the number of rows in resultset
                              //
                              Stmt->Cursor.RowsetSize:
                              MADB_RowsToFetch(&Stmt->Cursor, mysql_stmt_num_rows(Stmt->stmt));
  if (Rows2Fetch == 0)
  {
      return SQL_NO_DATA;
  }

    if (Stmt->result == NULL)
    {
        if (!(Stmt->result = (MYSQL_BIND *) MADB_CALLOC(sizeof(MYSQL_BIND) * mysql_stmt_field_count(Stmt->stmt))))
        {
            MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
            return Stmt->Error.ReturnValue;
        }
        if (Rows2Fetch > 1)
        {
            // We need something to be bound after executing for MoveNext function
            mysql_stmt_bind_result(Stmt->stmt, Stmt->result);
        }
    }

  if (Stmt->Ard->Header.ArrayStatusPtr)
  {
    MADB_InitStatusPtr(Stmt->Ard->Header.ArrayStatusPtr, Stmt->Ard->Header.ArraySize, SQL_NO_DATA);
  }

  if (Stmt->Ird->Header.RowsProcessedPtr)
  {
    ProcessedPtr= Stmt->Ird->Header.RowsProcessedPtr;
  }
  if (Stmt->Ird->Header.ArrayStatusPtr)
  {
    MADB_InitStatusPtr(Stmt->Ird->Header.ArrayStatusPtr, Stmt->Ard->Header.ArraySize, SQL_ROW_NOROW);
  }

  *ProcessedPtr= 0;

  /* We need to return to 1st row in the rowset only if there are >1 rows in it. Otherwise we stay on it anyway */
  if (Rows2Fetch > 1 && Stmt->Options.CursorType != SQL_CURSOR_FORWARD_ONLY)
  {
    SaveCursor= mysql_stmt_row_tell(Stmt->stmt);
    /* Skipping current row for for reading now, it will be read when the Cursor is returned to it */
    MoveNext(Stmt, 1LL);
  }

  for (j= 0; j < Rows2Fetch; ++j)
  {
    RowResult= SQL_SUCCESS;
    /* If we need to return the cursor to 1st row in the rowset, we start to read it from 2nd, and 1st row we read the last */
    if (SaveCursor != NULL)
    {
      RowNum= j + 1;
      if (RowNum == Rows2Fetch)
      {
        RowNum= 0;
        Stmt->Cursor.Next= mysql_stmt_row_tell(Stmt->stmt);
        mysql_stmt_row_seek(Stmt->stmt, SaveCursor);
      }
    }
    else
    {
      RowNum= j;
    }

    /*************** Setting up BIND structures ********************/
    /* Basically, nothing should happen here, but if happens, then it will happen on each row.
    Thus it's ok to stop */
    RETURN_ERROR_OR_CONTINUE(MADB_PrepareBind(Stmt, RowNum));

    /************************ Bind! ********************************/
    mysql_stmt_bind_result(Stmt->stmt, Stmt->result);

    if (Stmt->Options.UseBookmarks && Stmt->Options.BookmarkPtr != NULL)
    {
      /* TODO: Bookmark can be not only "unsigned long*", but also "unsigned char*". Can be determined by examining Stmt->Options.BookmarkType */
      long *p= (long *)Stmt->Options.BookmarkPtr;
      p+= RowNum * Stmt->Options.BookmarkLength;
      *p= (long)Stmt->Cursor.Position;
    }
    /************************ Fetch! ********************************/
    rc = MADB_SSPS_DISABLED(Stmt) && Stmt->stmt->result.type != MYSQL_FAKE_RESULT
              ? MADB_FetchCsps(Stmt) : mysql_stmt_fetch(Stmt->stmt);

    *ProcessedPtr += 1;

    if (Stmt->Cursor.Position < 0)
    {
      Stmt->Cursor.Position= 0;
    }

    switch(rc) {
    case 1:
    if (MADB_SSPS_DISABLED(Stmt))
    {
      if (Stmt->Ird->Header.ArrayStatusPtr)
      {
        Stmt->Ird->Header.ArrayStatusPtr[RowNum]= SQL_ROW_ERROR;
      }
      return SQL_ERROR;
    }
    else
    {
      RowResult= MADB_SetNativeError(&Stmt->Error, SQL_HANDLE_STMT, Stmt->stmt);
      /* If mysql_stmt_fetch returned error, there is no sense to continue */
      if (Stmt->Ird->Header.ArrayStatusPtr)
      {
        Stmt->Ird->Header.ArrayStatusPtr[RowNum]= MADB_MapToRowStatus(RowResult);
      }
      CALC_ALL_ROWS_RC(Result, RowResult, RowNum);
      return Result;
    }
    case MYSQL_DATA_TRUNCATED:
    {
      /* We will not report truncation if a dummy buffer was bound */
      int     col;

      for (col= 0; col < MADB_STMT_COLUMN_COUNT(Stmt); ++col)
      {
        if (Stmt->stmt->bind[col].error && *Stmt->stmt->bind[col].error > 0 &&
            !(Stmt->stmt->bind[col].flags & MADB_BIND_DUMMY))
        {
          MADB_DescRecord *ArdRec= MADB_DescGetInternalRecord(Stmt->Ard, col, MADB_DESC_READ),
                          *IrdRec= MADB_DescGetInternalRecord(Stmt->Ird, col, MADB_DESC_READ);
          /* If (numeric) field value and buffer are of the same size - ignoring truncation.
          In some cases specs are not clear enough if certain column signed or not(think of catalog functions for example), and
          some apps bind signed buffer where we return unsigdned value. And in general - if application want to fetch unsigned as
          signed, or vice versa, why we should prevent that. */
          if (ArdRec->OctetLength == IrdRec->OctetLength
           && MADB_IsIntType(IrdRec->ConciseType) && MADB_IsIntType(ArdRec->ConciseType))
          {
            continue;
          }
          /* For numeric types we return either 22003 or 01S07, 01004 for the rest.
             if ird type is not fractional - we return 22003. But as a matter of fact, it's possible that we have 22003 if converting
             from fractional types */
          RowResult= MADB_SetError(&Stmt->Error, ArdRec != NULL && MADB_IsNumericType(ArdRec->ConciseType) ?
                    (MADB_IsIntType(IrdRec->ConciseType) ? MADB_ERR_22003 : MADB_ERR_01S07) : MADB_ERR_01004, NULL, 0);
          /* One found such column is enough */
          break;
        }
      }
      break;
    }
    case MYSQL_NO_DATA:
      /* We have already incremented this counter, since there was no more rows, need to decrement */
      --*ProcessedPtr;
      /* SQL_NO_DATA should be only returned if first fetched row is already beyond end of the resultset */
      if (RowNum > 0)
      {
        continue;
      }
      return SQL_NO_DATA;
    }  /* End of switch on fetch result */

    ++Stmt->LastRowFetched;
    ++Stmt->PositionedCursor;

    /*Conversion etc. At this point, after fetch we can have RowResult either SQL_SUCCESS or SQL_SUCCESS_WITH_INFO */
    switch (MADB_FixFetchedValues(Stmt, RowNum, SaveCursor))
    {
    case SQL_ERROR:
      RowResult= SQL_ERROR;
      break;
    case SQL_SUCCESS_WITH_INFO:
      RowResult= SQL_SUCCESS_WITH_INFO;
    /* And if result of conversions - success, just leaving that we had before */
    }

    CALC_ALL_ROWS_RC(Result, RowResult, RowNum);

    if (Stmt->Ird->Header.ArrayStatusPtr)
    {
      Stmt->Ird->Header.ArrayStatusPtr[RowNum]= MADB_MapToRowStatus(RowResult);
    }
  }
    
  memset(Stmt->CharOffset, 0, sizeof(long) * mysql_stmt_field_count(Stmt->stmt));
  memset(Stmt->Lengths, 0, sizeof(long) * mysql_stmt_field_count(Stmt->stmt));

  ResetDescIntBuffers(Stmt->Ird);

  return Result;
}
/* }}} */

#undef CALC_ALL_ROWS_RC

/* {{{ MADB_StmtGetStmtAttr */ 
SQLRETURN MADB_StmtGetStmtAttr(MADB_Stmt *Stmt, SQLINTEGER Attribute, SQLPOINTER ValuePtr, SQLINTEGER BufferLength,
                       SQLINTEGER *StringLengthPtr)
{
  SQLINTEGER StringLength;
  SQLRETURN ret= SQL_SUCCESS;

  if (!StringLengthPtr)
    StringLengthPtr= &StringLength;

  if (!Stmt)
    return SQL_INVALID_HANDLE;

  switch(Attribute) {
  case SQL_ATTR_APP_PARAM_DESC:
    *(SQLPOINTER *)ValuePtr= Stmt->Apd;
    *StringLengthPtr= sizeof(SQLPOINTER *);
    break;
  case SQL_ATTR_APP_ROW_DESC:
    *(SQLPOINTER *)ValuePtr= Stmt->Ard;
    *StringLengthPtr= sizeof(SQLPOINTER *);
    break;
  case SQL_ATTR_IMP_PARAM_DESC:
    *(SQLPOINTER *)ValuePtr= Stmt->Ipd;
    *StringLengthPtr= sizeof(SQLPOINTER *);
    break;
  case SQL_ATTR_IMP_ROW_DESC:
    *(SQLPOINTER *)ValuePtr= Stmt->Ird;
    *StringLengthPtr= sizeof(SQLPOINTER *);
    break;
  case SQL_ATTR_PARAM_BIND_OFFSET_PTR:
    *(SQLPOINTER *)ValuePtr= Stmt->Apd->Header.BindOffsetPtr;
    break;
  case SQL_ATTR_PARAM_BIND_TYPE:
    *(SQLULEN *)ValuePtr= Stmt->Apd->Header.BindType;
    break;
  case SQL_ATTR_PARAM_OPERATION_PTR:
    *(SQLPOINTER *)ValuePtr= (SQLPOINTER)Stmt->Apd->Header.ArrayStatusPtr;
    break;
  case SQL_ATTR_PARAM_STATUS_PTR:
    *(SQLPOINTER *)ValuePtr= (SQLPOINTER)Stmt->Ipd->Header.ArrayStatusPtr;
    break;
  case SQL_ATTR_PARAMS_PROCESSED_PTR:
    *(SQLPOINTER *)ValuePtr= (SQLPOINTER)(SQLULEN)Stmt->Ipd->Header.BindType;
    break;
  case SQL_ATTR_PARAMSET_SIZE:
    *(SQLULEN *)ValuePtr= Stmt->Apd->Header.ArraySize;
    break;
  case SQL_ATTR_ASYNC_ENABLE:
    *(SQLPOINTER *)ValuePtr= SQL_ASYNC_ENABLE_OFF;
    break;
  case SQL_ATTR_ROW_ARRAY_SIZE:
  case SQL_ROWSET_SIZE:
    *(SQLULEN *)ValuePtr= Stmt->Ard->Header.ArraySize;
    break;
  case SQL_ATTR_ROW_BIND_OFFSET_PTR:
    *(SQLPOINTER *)ValuePtr= (SQLPOINTER)Stmt->Ard->Header.BindOffsetPtr;
    break;
  case SQL_ATTR_ROW_BIND_TYPE:
    *(SQLULEN *)ValuePtr= Stmt->Ard->Header.BindType;
    break;
  case SQL_ATTR_ROW_OPERATION_PTR:
    *(SQLPOINTER *)ValuePtr= (SQLPOINTER)Stmt->Ard->Header.ArrayStatusPtr;
    break;
  case SQL_ATTR_ROW_STATUS_PTR:
    *(SQLPOINTER *)ValuePtr= (SQLPOINTER)Stmt->Ird->Header.ArrayStatusPtr;
    break;
  case SQL_ATTR_ROWS_FETCHED_PTR:
    *(SQLULEN **)ValuePtr= Stmt->Ird->Header.RowsProcessedPtr;
    break;
  case SQL_ATTR_USE_BOOKMARKS:
    *(SQLUINTEGER *)ValuePtr= Stmt->Options.UseBookmarks;
  case SQL_ATTR_SIMULATE_CURSOR:
    *(SQLULEN *)ValuePtr= Stmt->Options.SimulateCursor;
    break;
  case SQL_ATTR_CURSOR_SCROLLABLE:
    *(SQLULEN *)ValuePtr= Stmt->Options.CursorType;
    break;
  case SQL_ATTR_CURSOR_SENSITIVITY:
    *(SQLULEN *)ValuePtr= SQL_UNSPECIFIED;
    break;
  case SQL_ATTR_CURSOR_TYPE:
    *(SQLULEN *)ValuePtr= Stmt->Options.CursorType;
    break;
  case SQL_ATTR_CONCURRENCY:
    *(SQLULEN *)ValuePtr= SQL_CONCUR_READ_ONLY;
    break;
  case SQL_ATTR_ENABLE_AUTO_IPD:
    *(SQLULEN *)ValuePtr= SQL_FALSE;
    break;
  case SQL_ATTR_MAX_LENGTH:
    *(SQLULEN *)ValuePtr= Stmt->Options.MaxLength;
    break;
  case SQL_ATTR_MAX_ROWS:
    *(SQLULEN *)ValuePtr= Stmt->Options.MaxRows;
    break;
  case SQL_ATTR_METADATA_ID:
    *(SQLULEN *)ValuePtr= Stmt->Options.MetadataId;
    break;
  case SQL_ATTR_NOSCAN:
    *(SQLULEN *)ValuePtr= SQL_NOSCAN_ON;
    break;
  case SQL_ATTR_QUERY_TIMEOUT:
    *(SQLULEN *)ValuePtr= 0;
    break;
  case SQL_ATTR_RETRIEVE_DATA:
    *(SQLULEN *)ValuePtr= SQL_RD_ON;
    break;
  }
  return ret;
}
/* }}} */


/* {{{ MADB_StmtSetStmtAttr */
SQLRETURN MADB_StmtSetStmtAttr(MADB_Stmt *Stmt, SQLINTEGER Attribute, SQLPOINTER ValuePtr, SQLINTEGER StringLength)
{
  SQLRETURN ret= SQL_SUCCESS;

  if (!Stmt)
    return SQL_INVALID_HANDLE;

  switch(Attribute) {
  case SQL_ATTR_APP_PARAM_DESC:
    if (ValuePtr)
    {
       MADB_Desc *Desc= (MADB_Desc *)ValuePtr;
      if (!Desc->AppType && Desc != Stmt->IApd)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_HY017, NULL, 0);
        return Stmt->Error.ReturnValue;
      }
      if (Desc->DescType != MADB_DESC_APD && Desc->DescType != MADB_DESC_UNKNOWN)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_HY024, NULL, 0);
        return Stmt->Error.ReturnValue;
      }
      RemoveStmtRefFromDesc(Stmt->Apd, Stmt, FALSE);
      Stmt->Apd= (MADB_Desc *)ValuePtr;
      Stmt->Apd->DescType= MADB_DESC_APD;
      if (Stmt->Apd != Stmt->IApd)
      {
        MADB_Stmt **IntStmt;
        IntStmt = (MADB_Stmt **)MADB_AllocDynamic(&Stmt->Apd->Stmts);
        *IntStmt= Stmt;
      }
    }
    else
    {
      RemoveStmtRefFromDesc(Stmt->Apd, Stmt, FALSE);
      Stmt->Apd= Stmt->IApd;
    }
    break;
  case SQL_ATTR_APP_ROW_DESC:
    if (ValuePtr)
    {
      MADB_Desc *Desc= (MADB_Desc *)ValuePtr;

      if (!Desc->AppType && Desc != Stmt->IArd)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_HY017, NULL, 0);
        return Stmt->Error.ReturnValue;
      }
      if (Desc->DescType != MADB_DESC_ARD && Desc->DescType != MADB_DESC_UNKNOWN)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_HY024, NULL, 0);
        return Stmt->Error.ReturnValue;
      }
      RemoveStmtRefFromDesc(Stmt->Ard, Stmt, FALSE);
      Stmt->Ard= Desc;
      Stmt->Ard->DescType= MADB_DESC_ARD;
      if (Stmt->Ard != Stmt->IArd)
      {
        MADB_Stmt **IntStmt;
        IntStmt = (MADB_Stmt **)MADB_AllocDynamic(&Stmt->Ard->Stmts);
        *IntStmt= Stmt;
      }
    }
    else
    {
      RemoveStmtRefFromDesc(Stmt->Ard, Stmt, FALSE);
      Stmt->Ard= Stmt->IArd;
    }
    break;

  case SQL_ATTR_PARAM_BIND_OFFSET_PTR:
    Stmt->Apd->Header.BindOffsetPtr= (SQLULEN*)ValuePtr;
    break;
  case SQL_ATTR_PARAM_BIND_TYPE:
    Stmt->Apd->Header.BindType= (SQLINTEGER)(SQLLEN)ValuePtr;
    break;
  case SQL_ATTR_PARAM_OPERATION_PTR:
    Stmt->Apd->Header.ArrayStatusPtr= (SQLUSMALLINT *)ValuePtr;
    break;
  case SQL_ATTR_PARAM_STATUS_PTR:
    Stmt->Ipd->Header.ArrayStatusPtr= (SQLUSMALLINT *)ValuePtr;
    break;
  case SQL_ATTR_PARAMS_PROCESSED_PTR:
    Stmt->Ipd->Header.RowsProcessedPtr  = (SQLULEN *)ValuePtr;
    break;
  case SQL_ATTR_PARAMSET_SIZE:
    Stmt->Apd->Header.ArraySize= (SQLULEN)ValuePtr;
    break;
  case SQL_ATTR_ROW_ARRAY_SIZE:
  case SQL_ROWSET_SIZE:
    Stmt->Ard->Header.ArraySize= (SQLULEN)ValuePtr;
    break;
  case SQL_ATTR_ROW_BIND_OFFSET_PTR:
    Stmt->Ard->Header.BindOffsetPtr= (SQLULEN*)ValuePtr;
    break;
  case SQL_ATTR_ROW_BIND_TYPE:
    Stmt->Ard->Header.BindType= (SQLINTEGER)(SQLLEN)ValuePtr;
    break;
  case SQL_ATTR_ROW_OPERATION_PTR:
    Stmt->Ard->Header.ArrayStatusPtr= (SQLUSMALLINT *)ValuePtr;
    break;
  case SQL_ATTR_ROW_STATUS_PTR:
    Stmt->Ird->Header.ArrayStatusPtr= (SQLUSMALLINT *)ValuePtr;
    break;
  case SQL_ATTR_ROWS_FETCHED_PTR:
    Stmt->Ird->Header.RowsProcessedPtr= (SQLULEN*)ValuePtr;
    break;
  case SQL_ATTR_ASYNC_ENABLE:
    if ((SQLULEN)ValuePtr != SQL_ASYNC_ENABLE_OFF)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (SQL_ATTR_ASYNC_ENABLE)", 0);
      ret= SQL_SUCCESS_WITH_INFO;
    }
    break;
  case SQL_ATTR_SIMULATE_CURSOR:
    Stmt->Options.SimulateCursor= (SQLULEN) ValuePtr;
    break;
  case SQL_ATTR_CURSOR_SCROLLABLE:
    Stmt->Options.CursorType=  ((SQLULEN)ValuePtr == SQL_NONSCROLLABLE) ?
                               SQL_CURSOR_FORWARD_ONLY : SQL_CURSOR_STATIC;
    break;
  case SQL_ATTR_CURSOR_SENSITIVITY:
    /* we only support default value = SQL_UNSPECIFIED */
    if ((SQLULEN)ValuePtr != SQL_UNSPECIFIED)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default cursor sensitivity", 0);
      ret= SQL_SUCCESS_WITH_INFO;
    }
    break;
  case SQL_ATTR_CURSOR_TYPE:
    /* We need to check global DSN/Connection settings */
    if (MA_ODBC_CURSOR_FORWARD_ONLY(Stmt->Connection) && (SQLULEN)ValuePtr != SQL_CURSOR_FORWARD_ONLY)
    {
      Stmt->Options.CursorType= SQL_CURSOR_FORWARD_ONLY;
      MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (SQL_CURSOR_FORWARD_ONLY)", 0);
      return Stmt->Error.ReturnValue;
    }
    else if (MA_ODBC_CURSOR_DYNAMIC(Stmt->Connection))
    {
      if ((SQLULEN)ValuePtr == SQL_CURSOR_KEYSET_DRIVEN)
      {
        Stmt->Options.CursorType= SQL_CURSOR_FORWARD_ONLY;
        MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (SQL_CURSOR_FORWARD_ONLY)", 0);
        return Stmt->Error.ReturnValue;
      }
      Stmt->Options.CursorType= (SQLUINTEGER)(SQLULEN)ValuePtr;
    }
    /* only FORWARD or Static is allowed */
    else
    {
      if ((SQLULEN)ValuePtr != SQL_CURSOR_FORWARD_ONLY &&
          (SQLULEN)ValuePtr != SQL_CURSOR_STATIC)
      {
        Stmt->Options.CursorType= SQL_CURSOR_FORWARD_ONLY;
        MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (SQL_CURSOR_FORWARD_ONLY)", 0);
        return Stmt->Error.ReturnValue;
      }
      Stmt->Options.CursorType= (SQLUINTEGER)(SQLULEN)ValuePtr;
    }
    break;
  case SQL_ATTR_CONCURRENCY:
    if ((SQLULEN)ValuePtr != SQL_CONCUR_READ_ONLY)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (SQL_CONCUR_READ_ONLY). ", 0);
      ret= SQL_SUCCESS_WITH_INFO;
    }
    break;
  case SQL_ATTR_ENABLE_AUTO_IPD:
    /* MariaDB doesn't deliver param metadata after prepare, so we can't autopopulate ird */
    MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, NULL, 0);
    return Stmt->Error.ReturnValue;
    break;
  case SQL_ATTR_MAX_LENGTH:
    Stmt->Options.MaxLength= (SQLULEN)ValuePtr;
    break;
  case SQL_ATTR_MAX_ROWS:
    Stmt->Options.MaxRows= (SQLULEN)ValuePtr;
    break;
  case SQL_ATTR_METADATA_ID:
    Stmt->Options.MetadataId= (SQLULEN)ValuePtr;
    break;
  case SQL_ATTR_NOSCAN:
    if ((SQLULEN)ValuePtr != SQL_NOSCAN_ON)
    {
       MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (SQL_NOSCAN_ON)", 0);
       ret= SQL_SUCCESS_WITH_INFO;
    }
    break;
  case SQL_ATTR_QUERY_TIMEOUT:
    if ((SQLULEN)ValuePtr != 0)
    {
       MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (no timeout)", 0);
       ret= SQL_SUCCESS_WITH_INFO;
    }
    break;
  case SQL_ATTR_RETRIEVE_DATA:
    if ((SQLULEN)ValuePtr != SQL_RD_ON)
    {
       MADB_SetError(&Stmt->Error, MADB_ERR_01S02, "Option value changed to default (SQL_RD_ON)", 0);
       ret= SQL_SUCCESS_WITH_INFO;
    }
    break;
  case SQL_ATTR_USE_BOOKMARKS:
    Stmt->Options.UseBookmarks= (SQLUINTEGER)(SQLULEN)ValuePtr;
   break;
  case SQL_ATTR_FETCH_BOOKMARK_PTR:
    MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, NULL, 0);
    return Stmt->Error.ReturnValue;
    break;
  default:
    MADB_SetError(&Stmt->Error, MADB_ERR_HY024, NULL, 0);
    return Stmt->Error.ReturnValue;
    break;
  }
  return ret;
}
/* }}} */

SQLRETURN MADB_GetBookmark(MADB_Stmt  *Stmt,
                           SQLSMALLINT TargetType,
                           SQLPOINTER  TargetValuePtr,
                           SQLLEN      BufferLength,
                           SQLLEN     *StrLen_or_IndPtr)
{
  if (Stmt->Options.UseBookmarks == SQL_UB_OFF)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07009, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if ((Stmt->Options.UseBookmarks == SQL_UB_VARIABLE && TargetType != SQL_C_VARBOOKMARK) ||
    (Stmt->Options.UseBookmarks != SQL_UB_VARIABLE && TargetType == SQL_C_VARBOOKMARK))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY003, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (TargetValuePtr && TargetType == SQL_C_BOOKMARK && BufferLength <= sizeof(SQLULEN))
  {
    *(SQLULEN *)TargetValuePtr= Stmt->Cursor.Position;
    if (StrLen_or_IndPtr)
    {
      *StrLen_or_IndPtr= sizeof(SQLULEN);
    }
    return SQL_SUCCESS;
  }

  /* Keeping compiler happy */
  return SQL_SUCCESS;
}

#define OK_SUCCESS_OR_TRUNCATION(Stmt, FetchColumnRc) do{ \
    SQLRETURN rc = (FetchColumnRc);               \
    if (!SQL_SUCCEEDED(rc) && rc != MYSQL_DATA_TRUNCATED) \
    { \
        MADB_SetNativeError(&(Stmt)->Error, SQL_HANDLE_STMT, (Stmt)->stmt); \
        return (Stmt)->Error.ReturnValue; \
    } \
} while(0) \

/* {{{ MADB_StmtGetData */
SQLRETURN MADB_StmtGetData(SQLHSTMT StatementHandle,
                           SQLUSMALLINT Col_or_Param_Num,
                           SQLSMALLINT TargetType,
                           SQLPOINTER TargetValuePtr,
                           SQLLEN BufferLength,
                           SQLLEN * StrLen_or_IndPtr,
                           BOOL   InternalUse /* Currently this is respected for SQL_CHAR type only,
                                                 since all "internal" calls of the function need string representation of datat */)
{
  MADB_Stmt       *Stmt= (MADB_Stmt *)StatementHandle;
  SQLUSMALLINT    Offset= Col_or_Param_Num - 1;
  SQLSMALLINT     OdbcType= 0, MadbType= 0;
  MYSQL_BIND      Bind;
  my_bool         IsNull= FALSE;
  my_bool         ZeroTerminated= 0;
  unsigned long   CurrentOffset= InternalUse == TRUE ? 0 : Stmt->CharOffset[Offset]; /* We are supposed not get bookmark column here */
  my_bool         Error;
  MADB_DescRecord *IrdRec= NULL;
  MYSQL_FIELD     *Field= mysql_fetch_field_direct(Stmt->metadata, Offset);

  MADB_CLEAR_ERROR(&Stmt->Error);

  /* Should not really happen, and is evidence of that something wrong happened in some previous call(SQLFetch?) */
  if (Stmt->stmt->bind == NULL)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY109, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (Stmt->stmt->bind[Offset].is_null != NULL && *Stmt->stmt->bind[Offset].is_null != '\0')
  {
    if (!StrLen_or_IndPtr)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_22002, NULL, 0);
      return Stmt->Error.ReturnValue;
    }
    *StrLen_or_IndPtr= SQL_NULL_DATA;
    return SQL_SUCCESS;
  }

  memset(&Bind, 0, sizeof(MYSQL_BIND));

  /* We might need it for SQL_C_DEFAULT type, or to obtain length of fixed length types(Access likes to have it) */
  IrdRec= MADB_DescGetInternalRecord(Stmt->Ird, Offset, MADB_DESC_READ);
  if (!IrdRec)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07009, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  switch (TargetType) {
  case SQL_ARD_TYPE:
    {
      MADB_DescRecord *Ard= MADB_DescGetInternalRecord(Stmt->Ard, Offset, MADB_DESC_READ);

      if (!Ard)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_07009, NULL, 0);
        return Stmt->Error.ReturnValue;
      }
      OdbcType= Ard->ConciseType;
    }
    break;
  case SQL_C_DEFAULT:
    {
      /* Taking type from IRD record. This way, if mysql type was fixed(currently that is mainly for catalog functions, we don't lose it.
         (Access uses default types on getting catalog functions results, and not quite happy when it gets something unexpected. Seemingly it cares about returned data lenghts even for types,
         for which standard says application should not care about */
      OdbcType= IrdRec->ConciseType;
    }
    break;
  default:
    OdbcType= TargetType;
    break;  
  }
  /* Restoring mariadb/mysql type from odbc type */
  MadbType= MADB_GetMaDBTypeAndLength(OdbcType, &Bind.is_unsigned, &Bind.buffer_length);

  /* set global values for Bind */
  Bind.error=   &Error;
  Bind.length=  &Bind.length_value;
  Bind.is_null= &IsNull;

  switch(OdbcType)
  {
  case SQL_DATE:
  case SQL_C_TYPE_DATE:
  case SQL_TIMESTAMP:
  case SQL_C_TYPE_TIMESTAMP:
  case SQL_TIME:
  case SQL_C_TYPE_TIME:
    {
      MYSQL_TIME tm;

      if (IrdRec->ConciseType == SQL_CHAR || IrdRec->ConciseType == SQL_VARCHAR)
      {
        char  *ClientValue= NULL;
        BOOL isTime;

        if (!(ClientValue = (char *)MADB_CALLOC(Stmt->stmt->bind[Offset].length_value + 1)))
        {
          return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
        }
        Bind.buffer=        ClientValue;
        Bind.buffer_type=   MYSQL_TYPE_STRING;
        Bind.buffer_length= Stmt->stmt->bind[Offset].length_value + 1;
        OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, 0));
        RETURN_ERROR_OR_CONTINUE(MADB_Str2Ts(ClientValue, Bind.length_value, &tm, FALSE, &Stmt->Error, &isTime));
        MADB_FREE(ClientValue);
      }
      else
      {
        Bind.buffer_length= sizeof(MYSQL_TIME);
        Bind.buffer= (void *)&tm;
        /* c/c is too smart to convert hours to days and days to hours, we don't need that */
        if ((OdbcType == SQL_C_TIME || OdbcType == SQL_C_TYPE_TIME)
          && (IrdRec->ConciseType == SQL_TIME || IrdRec->ConciseType == SQL_TYPE_TIME))
        {
          Bind.buffer_type= MYSQL_TYPE_TIME;
        }
        else
        {
          Bind.buffer_type= MYSQL_TYPE_TIMESTAMP;
          
        }
        OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, 0));
      }
      RETURN_ERROR_OR_CONTINUE(MADB_CopyMadbTimestamp(Stmt, &tm, TargetValuePtr, StrLen_or_IndPtr, StrLen_or_IndPtr, OdbcType, IrdRec->ConciseType));
      break;
    }
  case SQL_C_INTERVAL_HOUR_TO_MINUTE:
  case SQL_C_INTERVAL_HOUR_TO_SECOND:
    {
      MYSQL_TIME tm;
      SQL_INTERVAL_STRUCT *ts= (SQL_INTERVAL_STRUCT *)TargetValuePtr;

      if (IrdRec->ConciseType == SQL_CHAR || IrdRec->ConciseType == SQL_VARCHAR)
      {
        char *ClientValue= NULL;
        BOOL isTime;

        if (!(ClientValue = (char *)MADB_CALLOC(Stmt->stmt->bind[Offset].length_value + 1)))
        {
          return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
        }
        Bind.buffer=        ClientValue;
        Bind.buffer_type=   MYSQL_TYPE_STRING;
        Bind.buffer_length= Stmt->stmt->bind[Offset].length_value + 1;
        OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, 0));
        RETURN_ERROR_OR_CONTINUE(MADB_Str2Ts(ClientValue, Bind.length_value, &tm, TRUE, &Stmt->Error, &isTime));
        MADB_FREE(ClientValue);
      }
      else
      {
        Bind.buffer_length= sizeof(MYSQL_TIME);
        Bind.buffer= (void *)&tm;
        /* c/c is too smart to convert hours to days and days to hours, we don't need that */
        Bind.buffer_type= Field && Field->type == MYSQL_TYPE_TIME ? MYSQL_TYPE_TIME : MYSQL_TYPE_TIMESTAMP;
        OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, 0));
      }

      if (tm.hour > 99999)
      {
        return MADB_SetError(&Stmt->Error, MADB_ERR_22015, NULL, 0);
      }

      ts->intval.day_second.hour= tm.hour;
      ts->intval.day_second.minute= tm.minute;
      ts->interval_sign= tm.neg ? SQL_TRUE : SQL_FALSE;

      if (TargetType == SQL_C_INTERVAL_HOUR_TO_MINUTE)
      {
        ts->intval.day_second.second= 0;
        ts->interval_type= SQL_INTERVAL_HOUR_TO_MINUTE;
        if (tm.second)
        {
          return MADB_SetError(&Stmt->Error, MADB_ERR_01S07, NULL, 0);
        }
      }
      else
      {
        ts->interval_type= SQL_INTERVAL_HOUR_TO_SECOND;
        ts->intval.day_second.second= tm.second;
      }
      if (StrLen_or_IndPtr)
      {
        *StrLen_or_IndPtr= sizeof(SQL_INTERVAL_STRUCT);
      }
    }
    break;
  case SQL_WCHAR:  // same as SQL_C_WCHAR 
  case SQL_WVARCHAR:
  case SQL_WLONGVARCHAR:
    {
      MDBUG_C_PRINT(Stmt->Connection, "SQLGetData for WCHAR type, Col_or_Param_Num: %d OdbcType %d", Col_or_Param_Num, OdbcType);
      char  *ClientValue= NULL;
      size_t CharLength= 0;

      ALIGN_WCHAR_LENGTH(BufferLength);

      /* Kinda this it not 1st call for this value, and we have it nice and recoded */
      if (IrdRec->InternalBuffer == NULL/* && Stmt->Lengths[Offset] == 0*/)
      {
        if (!(ClientValue = (char *)MADB_CALLOC(Stmt->stmt->bind[Offset].length_value + 1)))
        {
          MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          return Stmt->Error.ReturnValue;
        }
        Bind.buffer=        ClientValue;
        Bind.buffer_type=   MYSQL_TYPE_STRING;
        Bind.buffer_length= Stmt->stmt->bind[Offset].length_value + 1;

        OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, Stmt->CharOffset[Offset]));

        /* check total length: if not enough space, we need to calculate new CharOffset for next fetch */
        if (Stmt->stmt->bind[Offset].length_value)
        {
          size_t ReqBuffOctetLen;
          /* Size in chars */
          CharLength= MbstrCharLen(ClientValue, Stmt->stmt->bind[Offset].length_value - Stmt->CharOffset[Offset],
            Stmt->Connection->Charset.cs_info);
          /* MbstrCharLen gave us length in characters. For encoding of each character we might need
             2 SQLWCHARs in case of UTF16, or 1 SQLWCHAR in case of UTF32. Probably we need calcualate better
             number of required SQLWCHARs */
          ReqBuffOctetLen= (CharLength + 1)*(4/sizeof(SQLWCHAR))*sizeof(SQLWCHAR);

          if (BufferLength)
          {
            /* Buffer is not big enough. Alocating InternalBuffer.
               MADB_SetString would do that anyway if - allocate buffer fitting the whole wide string,
               and then copied its part to the application's buffer */
            if (ReqBuffOctetLen > (size_t)BufferLength)
            {
              IrdRec->InternalBuffer= (char*)MADB_CALLOC(ReqBuffOctetLen);

              if (IrdRec->InternalBuffer == 0)
              {
                MADB_FREE(ClientValue);
                return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
              }

              CharLength= MADB_SetString(&Stmt->Connection->Charset, IrdRec->InternalBuffer, (SQLINTEGER)ReqBuffOctetLen / sizeof(SQLWCHAR),
                ClientValue, Stmt->stmt->bind[Offset].length_value - Stmt->CharOffset[Offset], &Stmt->Error);
            }
            else
            {
              /* Application's buffer is big enough - writing directly there */
              CharLength= MADB_SetString(&Stmt->Connection->Charset, TargetValuePtr, (SQLINTEGER)(BufferLength / sizeof(SQLWCHAR)),
                ClientValue, Stmt->stmt->bind[Offset].length_value - Stmt->CharOffset[Offset], &Stmt->Error);
            }

            if (!SQL_SUCCEEDED(Stmt->Error.ReturnValue))
            {
              MADB_FREE(ClientValue);
              MADB_FREE(IrdRec->InternalBuffer);

              return Stmt->Error.ReturnValue;
            }
          }

          if (!Stmt->CharOffset[Offset])
          {
            Stmt->Lengths[Offset]= (unsigned long)(CharLength*sizeof(SQLWCHAR));
          }
        }
        else if (BufferLength >= sizeof(SQLWCHAR))
        {
          *(SQLWCHAR*)TargetValuePtr= 0;
        }
      }
      else  /* IrdRec->InternalBuffer == NULL && Stmt->Lengths[Offset] == 0 */
      {
        CharLength= SqlwcsLen((SQLWCHAR*)((char*)IrdRec->InternalBuffer + Stmt->CharOffset[Offset]), -1);
      }

      if (StrLen_or_IndPtr)
      {
        *StrLen_or_IndPtr= CharLength * sizeof(SQLWCHAR);
      }

      if (!BufferLength)
      {
        MADB_FREE(ClientValue);

        return MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);
      }

      if (IrdRec->InternalBuffer)
      {
        /* If we have more place than only for the TN */
        if (BufferLength > sizeof(SQLWCHAR))
        {
          memcpy(TargetValuePtr, (char*)IrdRec->InternalBuffer + Stmt->CharOffset[Offset],
            MIN(BufferLength - sizeof(SQLWCHAR), CharLength*sizeof(SQLWCHAR)));
        }
        /* Terminating Null */
        *(SQLWCHAR*)((char*)TargetValuePtr + MIN(BufferLength - sizeof(SQLWCHAR), CharLength*sizeof(SQLWCHAR)))= 0;
      }

      if (CharLength >= BufferLength / sizeof(SQLWCHAR))
      {
        /* Calculate new offset and substract 1 byte for null termination */
        Stmt->CharOffset[Offset]+= (unsigned long)BufferLength - sizeof(SQLWCHAR);
        MADB_FREE(ClientValue);

        return MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);
      }
      else
      {
        Stmt->CharOffset[Offset]= Stmt->Lengths[Offset];
        MADB_FREE(IrdRec->InternalBuffer);
      }
      MDBUG_C_DUMP_HEX(Stmt->Connection, TargetValuePtr, *StrLen_or_IndPtr);
      MADB_FREE(ClientValue);
    }
    break;
  case SQL_CHAR:
  case SQL_VARCHAR:
    if (Stmt->stmt->fields[Offset].type == MYSQL_TYPE_BLOB &&
        Stmt->stmt->fields[Offset].charsetnr == 63)
    {
      if (!BufferLength && StrLen_or_IndPtr)
      {
        *StrLen_or_IndPtr= Stmt->stmt->bind[Offset].length_value * 2;
        return SQL_SUCCESS_WITH_INFO;
      }
     
#ifdef CONVERSION_TO_HEX_IMPLEMENTED
      {
        /*TODO: */
        char *TmpBuffer;
        if (!(TmpBuffer= (char *)MADB_CALLOC(BufferLength)))
        {

        }
      }
#endif
    }
    ZeroTerminated= 1;

  case SQL_LONGVARCHAR:
  case SQL_BINARY:
  case SQL_VARBINARY:
  case SQL_LONGVARBINARY:
    {
      Bind.buffer=        TargetValuePtr;
      Bind.buffer_length= (unsigned long)BufferLength;
      Bind.buffer_type=   MadbType;

      if (!(BufferLength) && StrLen_or_IndPtr)
      {
        /* Paranoid - before StrLen_or_IndPtr was used as length directly. so leaving same value in Bind.length. Unlikely needed */
        Bind.length_value= (unsigned long)*StrLen_or_IndPtr;
        Bind.length=       &Bind.length_value;

        OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, Stmt->CharOffset[Offset]));
        
        if (InternalUse) 
        {
          *StrLen_or_IndPtr= *Bind.length;
        }
        else
        {
          if (!Stmt->CharOffset[Offset])
          {
            Stmt->Lengths[Offset]= *Bind.length;
          }
          *StrLen_or_IndPtr= Stmt->Lengths[Offset] - Stmt->CharOffset[Offset];
        }
        
        MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);

        return SQL_SUCCESS_WITH_INFO;
      }

      OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, CurrentOffset));

      /* Dirty temporary hack before we know what is going on. Yes, there is nothing more eternal, than temporary
         It's not that bad, after all */
      if ((long)*Bind.length == -1)
      {
        *Bind.length= 0;
      }
      /* end of dirty hack */

      if (!InternalUse && !Stmt->CharOffset[Offset])
      {
        Stmt->Lengths[Offset]= *Bind.length;
      }
      if (ZeroTerminated)
      {
        char *p= (char *)Bind.buffer;
        if (BufferLength > (SQLLEN)*Bind.length)
        {
          p[*Bind.length]= 0;
        }
        else
        {
          p[BufferLength-1]= 0;
        }
      }
      
      if (StrLen_or_IndPtr)
      {
        *StrLen_or_IndPtr= *Bind.length - CurrentOffset;
      }
      if (InternalUse == FALSE)
      {
        /* Recording new offset only if that is API call, and not getting data for internal use */
        Stmt->CharOffset[Offset]+= MIN((unsigned long)BufferLength - ZeroTerminated, *Bind.length);
        if ((BufferLength - ZeroTerminated) && Stmt->Lengths[Offset] > Stmt->CharOffset[Offset])
        {
          MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);
          return Stmt->Error.ReturnValue;
        }
      }

      if (StrLen_or_IndPtr && BufferLength - ZeroTerminated < *StrLen_or_IndPtr)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);
        return SQL_SUCCESS_WITH_INFO;
      }
    }
    break;
  case SQL_NUMERIC:
  {
    SQLRETURN rc;
    MADB_DescRecord *Ard= MADB_DescGetInternalRecord(Stmt->Ard, Offset, MADB_DESC_READ);

    Bind.buffer_length= MADB_DEFAULT_PRECISION + 1/*-*/ + 1/*.*/;
    Bind.buffer = (char *)MADB_CALLOC(Bind.buffer_length);

    Bind.buffer_type=   MadbType;

    OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, 0));

    MADB_CLEAR_ERROR(&Stmt->Error);

    if (Bind.buffer_length < Stmt->stmt->bind[Offset].length_value)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_22003, NULL, 0);
      MADB_FREE(Bind.buffer);
      return Stmt->Error.ReturnValue;
    }

    rc= MADB_CharToSQLNumeric(Bind.buffer, Stmt->Ard, Ard, TargetValuePtr, 0);
    MADB_FREE(Bind.buffer); // free the buffer since the data is written to TargetValuePtr.

    /* Ugly */
    if (rc != SQL_SUCCESS)
    {
      MADB_SetError(&Stmt->Error, rc, NULL, 0);
      if (rc == SQL_ERROR)
      {
        return SQL_ERROR;
      }
    }

    if (StrLen_or_IndPtr != NULL)
    {
      *StrLen_or_IndPtr= sizeof(SQL_NUMERIC_STRUCT);
    }
    break;
  }
  default:
    {
       /* Set the conversion function */
      Bind.buffer_type= MadbType;
      Bind.buffer= TargetValuePtr;
      if (Bind.buffer_length == 0 && BufferLength > 0)
      {
        Bind.buffer_length= (unsigned long)BufferLength;
      }
      OK_SUCCESS_OR_TRUNCATION(Stmt, MADB_StmtFetchColumn(Stmt, &Bind, Offset, 0));

      if (StrLen_or_IndPtr != NULL)
      {
        /* We get here only for fixed data types. Thus, according to the specs 
           "this is the length of the data after conversion; that is, it is the size of the type to which the data was converted".
           For us that is the size of the buffer in bind structure. Not the size of the field */

        *StrLen_or_IndPtr= Bind.buffer_length;

        /* Paranoid - it was here, so leaving it in place */
        if ((long)Bind.length_value == -1)
        {
          Bind.length_value= 0;
        }
        /* We do this for catalog functions and MS Access in first turn. The thing is that for some columns in catalog functions result,
           we fix column type manually, since we can't make field of desired type in the query to I_S. Mostly that is for SQLSMALLINT
           fields, and we can cast only to int, not to short. MSAccess in its turn like to to get length for fixed length types, and
           throws error if the length is not what it expected (ODBC-131)
           Probably it makes sense to do this only for SQL_C_DEFAULT type, which MS Access uses. But atm it looks like this should
           not hurt if done for other types, too */
        if (*StrLen_or_IndPtr == 0 || (Bind.length_value > (unsigned long)IrdRec->OctetLength && *StrLen_or_IndPtr > IrdRec->OctetLength))
        {
          *StrLen_or_IndPtr= IrdRec->OctetLength;
        }
      }
    }
  }             /* End of switch(OdbcType) */

  /* Marking fixed length fields to be able to return SQL_NO_DATA on subsequent calls, as standard prescribes
     "SQLGetData cannot be used to return fixed-length data in parts. If SQLGetData is called more than one time
      in a row for a column containing fixed-length data, it returns SQL_NO_DATA for all calls after the first."
     Stmt->Lengths[Offset] would be set for variable length types */
  if (!InternalUse && Stmt->Lengths[Offset] == 0)
  {
    Stmt->CharOffset[Offset]= MAX((unsigned long)Bind.buffer_length, Bind.length_value);
  }

  if (IsNull)
  {
    if (!StrLen_or_IndPtr)
    {
      return MADB_SetError(&Stmt->Error, MADB_ERR_22002, NULL, 0);
    }
    *StrLen_or_IndPtr= SQL_NULL_DATA;
  }

  return Stmt->Error.ReturnValue;
}
/* }}} */

#undef OK_SUCCESS_OR_TRUNCATION

/* {{{ MADB_StmtRowCount */
SQLRETURN MADB_StmtRowCount(MADB_Stmt *Stmt, SQLLEN *RowCountPtr)
{
  if (Stmt->AffectedRows != -1)
    *RowCountPtr= (SQLLEN)Stmt->AffectedRows;
  else if (NO_CACHE(Stmt))
    // If we don't cache the result, we don't know
    // the number of rows in resultset
    //
    *RowCountPtr= -1;
  else if(Stmt->stmt && Stmt->stmt->result.rows && mysql_stmt_field_count(Stmt->stmt))
    *RowCountPtr= (SQLLEN)mysql_stmt_num_rows(Stmt->stmt);
  else
    *RowCountPtr= 0;
  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MapColAttributesDescType */
SQLUSMALLINT MapColAttributeDescType(SQLUSMALLINT FieldIdentifier)
{
  /* we need to map the old field identifiers, see bug ODBC-8 */
  switch (FieldIdentifier)
  {
  case SQL_COLUMN_SCALE:
    return SQL_DESC_SCALE;
  case SQL_COLUMN_PRECISION:
    return SQL_DESC_PRECISION;
  case SQL_COLUMN_NULLABLE:
    return SQL_DESC_NULLABLE;
  case SQL_COLUMN_LENGTH:
    return SQL_DESC_OCTET_LENGTH;
  case SQL_COLUMN_NAME:
    return SQL_DESC_NAME;
  default:
    return FieldIdentifier;
  }
}
/* }}} */

/* {{{ MADB_StmtRowCount */
SQLRETURN MADB_StmtParamCount(MADB_Stmt *Stmt, SQLSMALLINT *ParamCountPtr)
{
  *ParamCountPtr= (SQLSMALLINT)(Stmt->Query.ParamPositions.elements);

  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_StmtColumnCount */
SQLRETURN MADB_StmtColumnCount(MADB_Stmt *Stmt, SQLSMALLINT *ColumnCountPtr)
{
  /* We supposed to have that data in the descriptor by now. No sense to ask C/C API one more time for that */
  *ColumnCountPtr= (SQLSMALLINT)MADB_STMT_COLUMN_COUNT(Stmt);
  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_StmtColAttribute */
SQLRETURN MADB_StmtColAttribute(MADB_Stmt *Stmt, SQLUSMALLINT ColumnNumber, SQLUSMALLINT FieldIdentifier, SQLPOINTER CharacterAttributePtr,
             SQLSMALLINT BufferLength, SQLSMALLINT *StringLengthPtr, SQLLEN *NumericAttributePtr, my_bool IsWchar)
{
  MADB_DescRecord *Record;
  SQLSMALLINT     StringLength=     0;
  SQLLEN          NumericAttribute;
  BOOL            IsNumericAttr=    TRUE;

  if (!Stmt)
    return SQL_INVALID_HANDLE;
  
  MADB_CLEAR_ERROR(&Stmt->Error);

  if (!Stmt->stmt || !mysql_stmt_field_count(Stmt->stmt))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07005, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (ColumnNumber < 1 || ColumnNumber > mysql_stmt_field_count(Stmt->stmt))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07009, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  /* We start at offset zero */
  --ColumnNumber;

  if (!(Record= MADB_DescGetInternalRecord(Stmt->Ird, ColumnNumber, MADB_DESC_READ)))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07009, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  /* Mapping ODBC2 attributes to ODBC3
     TODO: it looks like it takes more than that 
     "In ODBC 3.x driver must support SQL_COLUMN_PRECISION and SQL_DESC_PRECISION, SQL_COLUMN_SCALE and SQL_DESC_SCALE,
     and SQL_COLUMN_LENGTH and SQL_DESC_LENGTH. These values are different because precision, scale, and length are defined
     differently in ODBC 3.x than they were in ODBC 2.x."
     */
  FieldIdentifier= MapColAttributeDescType(FieldIdentifier);

  switch(FieldIdentifier) {
  case SQL_DESC_AUTO_UNIQUE_VALUE:
    NumericAttribute= (SQLLEN)Record->AutoUniqueValue;
    break;
  case SQL_DESC_BASE_COLUMN_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : NULL,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->BaseColumnName, strlen(Record->BaseColumnName), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_BASE_TABLE_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : NULL,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->BaseTableName, strlen(Record->BaseTableName), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_CASE_SENSITIVE:
    NumericAttribute= (SQLLEN)Record->CaseSensitive;
    break;
  case SQL_DESC_CATALOG_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->CatalogName, strlen(Record->CatalogName), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_SCHEMA_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              "", 0, &Stmt->Error);
    IsNumericAttr= FALSE;
  case SQL_DESC_CONCISE_TYPE:
    NumericAttribute= (SQLLEN)Record->ConciseType;
    break;
  case SQL_DESC_SEARCHABLE:
    NumericAttribute= (SQLLEN)Record->Searchable;
    break;
  case SQL_DESC_COUNT:
    NumericAttribute= (SQLLEN)Stmt->Ird->Header.Count;
    break;
  case SQL_DESC_DISPLAY_SIZE:
    NumericAttribute= (SQLLEN)Record->DisplaySize;
    break;
  case SQL_DESC_FIXED_PREC_SCALE:
    NumericAttribute= (SQLLEN)Record->FixedPrecScale;
    break;
  case SQL_DESC_PRECISION:
    NumericAttribute= (SQLLEN)Record->Precision;
    break;
  case SQL_DESC_LENGTH:
    NumericAttribute= (SQLLEN)Record->Length;
    break;
  case SQL_DESC_LITERAL_PREFIX:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->LiteralPrefix, strlen(Record->LiteralPrefix), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_LITERAL_SUFFIX:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->LiteralSuffix, strlen(Record->LiteralSuffix), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_LOCAL_TYPE_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              "", 0, &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_LABEL:
  case SQL_DESC_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->ColumnName, strlen(Record->ColumnName), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_TYPE_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->TypeName, strlen(Record->TypeName), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_NULLABLE:
    NumericAttribute= Record->Nullable;
    break;
  case SQL_DESC_UNNAMED:
    NumericAttribute= Record->Unnamed;
    break;
  case SQL_DESC_UNSIGNED:
    NumericAttribute= Record->Unsigned;
    break;
  case SQL_DESC_UPDATABLE:
    NumericAttribute= Record->Updateable;
    break;
  case SQL_DESC_OCTET_LENGTH:
    NumericAttribute= Record->OctetLength;
    break;
  case SQL_DESC_SCALE:
    NumericAttribute= Record->Scale;
    break;
  case SQL_DESC_TABLE_NAME:
    StringLength= (SQLSMALLINT)MADB_SetString(IsWchar ? &Stmt->Connection->Charset : 0,
                                              CharacterAttributePtr, (IsWchar) ? BufferLength / sizeof(SQLWCHAR) : BufferLength,
                                              Record->TableName, strlen(Record->TableName), &Stmt->Error);
    IsNumericAttr= FALSE;
    break;
  case SQL_DESC_TYPE:
    NumericAttribute= Record->Type;
    break;
  case SQL_COLUMN_COUNT:
    NumericAttribute= mysql_stmt_field_count(Stmt->stmt);
    break;
  default:
    MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (StringLengthPtr)
    *StringLengthPtr= (SQLSMALLINT)StringLength;
  if (StringLength && !BufferLength && CharacterAttributePtr)
    MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);

  /* We shouldn't touch application memory without purpose, writing garbage there. Thus IsNumericAttr.
     Besides .Net was quite disappointed about that */
  if (NumericAttributePtr && IsNumericAttr == TRUE)
    *NumericAttributePtr= NumericAttribute;
  if (StringLengthPtr && IsWchar)
    *StringLengthPtr*= sizeof(SQLWCHAR);
  return Stmt->Error.ReturnValue;
}
/* }}} */

/* {{{ MADB_StmtColumnPrivileges */
SQLRETURN MADB_StmtColumnPrivileges(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT NameLength1,
                                    char *SchemaName, SQLSMALLINT NameLength2, char *TableName,
                                    SQLSMALLINT NameLength3, char *ColumnName, SQLSMALLINT NameLength4)
{
  char StmtStr[1024];
  SQLRETURN ret;

  MADB_CLEAR_ERROR(&Stmt->Error);

  /* TableName is mandatory */
  if (!TableName || !NameLength3)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY009, "Tablename is required", 0);
    return Stmt->Error.ReturnValue;
  }

  // Currently, the engine does not implement column_privileges table, so we submit a query that returns an empty
  // result set.
  _snprintf(StmtStr, 1024, "SELECT TABLE_SCHEMA AS TABLE_CAT, NULL as TABLE_SCHEM, TABLE_NAME,"
                                 "COLUMN_NAME, NULL AS GRANTOR, GRANTEE, PRIVILEGE_TYPE AS PRIVILEGE,"
                                 "IS_GRANTABLE FROM INFORMATION_SCHEMA.COLUMN_PRIVILEGES WHERE 1=0");
  
  ret = Stmt->Methods->ExecDirect(Stmt, StmtStr, (SQLINTEGER)strlen(StmtStr));
  if (SQL_SUCCEEDED(ret))
  {
      ret = MADB_SetError(&Stmt->Error, MADB_ERR_01000, "COLUMN_PRIVILEGES is currently not supported, so the empty result is returned.", 0);
  }
  return ret;
}
/* }}} */

/* {{{ MADB_StmtTablePrivileges */
SQLRETURN MADB_StmtTablePrivileges(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT NameLength1,
                                    char *SchemaName, SQLSMALLINT NameLength2,
                                    char *TableName, SQLSMALLINT NameLength3)
{
  char StmtStr[1024],
       *p;

  MADB_CLEAR_ERROR(&Stmt->Error);

  p= StmtStr;
  p += _snprintf(StmtStr, 1024, "SELECT TABLE_SCHEMA AS TABLE_CAT, NULL AS TABLE_SCHEM, TABLE_NAME, "
                                  "NULL AS GRANTOR, GRANTEE, PRIVILEGE_TYPE AS PRIVILEGE, IS_GRANTABLE "
                                  "FROM INFORMATION_SCHEMA.TABLE_PRIVILEGES WHERE ");
  if (CatalogName)
    p+= _snprintf(p, 1024 - strlen(StmtStr), "TABLE_SCHEMA LIKE '%s' ", CatalogName);
  else
    p+= _snprintf(p, 1024 - strlen(StmtStr), "TABLE_SCHEMA LIKE IF(DATABASE(), DATABASE(), '%%') ");
  if (TableName)
    p+= _snprintf(p, 1024 - strlen(StmtStr), "AND TABLE_NAME LIKE '%s' ", TableName);
  
  p+= _snprintf(p, 1024 - strlen(StmtStr), "ORDER BY TABLE_SCHEM, TABLE_NAME, PRIVILEGE");
  
  return Stmt->Methods->ExecDirect(Stmt, StmtStr, (SQLINTEGER)strlen(StmtStr));
}
/* }}} */

static const MADB_ShortTypeInfo SqlTablesColType[5] = {
  {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0},  // TABLE_CAT
  {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0},  // TABLE_SCHEM
  {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0},  // TABLE_NAME
  {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0},  // TABLE_TYPE
  {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0}   // REMARKS
};

/* {{{ MADB_StmtTables */
SQLRETURN MADB_StmtTables(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT CatalogNameLength,
                          char *SchemaName, SQLSMALLINT SchemaNameLength, char *TableName,
                          SQLSMALLINT TableNameLength, char *TableType, SQLSMALLINT TableTypeLength)
{
  MADB_DynString StmtStr;
  char Quote[2];
  SQLRETURN ret;

  /*
  METADATA_ID       CatalogName     SchemaName       TableName           TableType
  ---------------------------------------------------------------------------------
  ODBC_V3:
  SQL_FALSE         Pattern         Pattern          Pattern             ValueList
  SQL_TRUE          Identifier      Identifier       Identifier          ValueList
  ODBC_V2:
                    Identifier      Identifier       Identifier          ValueList
  --------------------------------------------------------------------------------
  */

  MDBUG_C_ENTER(Stmt->Connection, "MADB_StmtTables");

  ADJUST_LENGTH(CatalogName, CatalogNameLength);
  ADJUST_LENGTH(SchemaName, SchemaNameLength);
  ADJUST_LENGTH(TableName, TableNameLength);
  ADJUST_LENGTH(TableType, TableTypeLength);

  if (CatalogNameLength > 64 || TableNameLength > 64)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY090, "Table and catalog names are limited to 64 chars", 0);
    return Stmt->Error.ReturnValue;
  }

  if (!CatalogNameLength && Stmt->Connection->mariadb->db)
  {
    CatalogName = Stmt->Connection->mariadb->db;
    CatalogNameLength = strlen(CatalogName);
  }

  /* SQL_ALL_CATALOGS 
     If CatalogName is SQL_ALL_CATALOGS and SchemaName and TableName are empty strings, 
     the result set contains a list of valid catalogs for the data source. 
     (All columns except the TABLE_CAT column contain NULLs
  */
  if (CatalogName && CatalogNameLength && TableName != NULL && !TableNameLength &&
    SchemaName != NULL && SchemaNameLength == 0 && !strncmp(CatalogName, SQL_ALL_CATALOGS, CatalogNameLength))
  {
    MADB_InitDynamicString(&StmtStr, "SELECT SCHEMA_NAME AS TABLE_CAT, CONVERT(NULL,CHAR(64)) AS TABLE_SCHEM, "
                                  "CONVERT(NULL,CHAR(64)) AS TABLE_NAME, NULL AS TABLE_TYPE, NULL AS REMARKS "
                                  "FROM INFORMATION_SCHEMA.SCHEMATA "
                                  "GROUP BY SCHEMA_NAME ORDER BY SCHEMA_NAME",
                                  8192, 512);
  }
  /* SQL_ALL_TABLE_TYPES
     If TableType is SQL_ALL_TABLE_TYPES and CatalogName, SchemaName, and TableName are empty strings, 
     the result set contains a list of valid table types for the data source. 
     (All columns except the TABLE_TYPE column contain NULLs.)
  */
  else if (CatalogName != NULL && !CatalogNameLength && TableName != NULL && !TableNameLength &&
    SchemaName != NULL && SchemaNameLength == 0 && TableType && TableTypeLength &&
            !strncmp(TableType, SQL_ALL_TABLE_TYPES, TableTypeLength))
  {
    MADB_InitDynamicString(&StmtStr, "SELECT NULL AS TABLE_CAT, NULL AS TABLE_SCHEM, "
                                  "NULL AS TABLE_NAME, 'TABLE' AS TABLE_TYPE, NULL AS REMARKS "
                                  "FROM DUAL "
                                  "UNION "
                                  "SELECT NULL, NULL, NULL, 'VIEW', NULL FROM DUAL "
                                  "UNION "
                                  "SELECT NULL, NULL, NULL, 'SYSTEM VIEW', NULL FROM DUAL",
                                  8192, 512); 
  }
  /* Since we treat our databases as catalogs, the only acceptable value for schema is NULL or "%"
     if that is not the special case of call for schemas list. Otherwise we return empty resultset*/
  else if (SchemaName &&
    ((!strncmp(SchemaName,SQL_ALL_SCHEMAS, SchemaNameLength) && CatalogName && CatalogNameLength == 0 && TableName && TableNameLength == 0) ||
      strncmp(SchemaName, SQL_ALL_SCHEMAS, SchemaNameLength)))
  {
    MADB_InitDynamicString(&StmtStr, "SELECT NULL AS TABLE_CAT, NULL AS TABLE_SCHEM, "
      "NULL AS TABLE_NAME, NULL AS TABLE_TYPE, NULL AS REMARKS "
      "FROM DUAL WHERE 1=0", 8192, 512);
  }
  else
  {
    MADB_InitDynamicString(&StmtStr, "SELECT TABLE_SCHEMA AS TABLE_CAT, NULL AS TABLE_SCHEM, TABLE_NAME, "
                                  "if(TABLE_TYPE='BASE TABLE','TABLE',TABLE_TYPE) AS TABLE_TYPE ,"
                                  "TABLE_COMMENT AS REMARKS FROM INFORMATION_SCHEMA.TABLES WHERE 1=1 ",
                                  8192, 512);
    if (Stmt->Options.MetadataId)
    {
      strcpy(Quote, "`");
    }
    else
    {
      strcpy(Quote, "'");
    }

    if (CatalogName)
    {
      MADB_DynstrAppend(&StmtStr, " AND TABLE_SCHEMA ");
      MADB_DynstrAppend(&StmtStr, "LIKE ");
      MADB_DynstrAppend(&StmtStr, Quote);
      MADB_DynstrAppendMem(&StmtStr, CatalogName, CatalogNameLength);
      MADB_DynstrAppend(&StmtStr, Quote);
    }

    if (TableName && TableNameLength)
    {
      MADB_DynstrAppend(&StmtStr, " AND TABLE_NAME LIKE ");
      MADB_DynstrAppend(&StmtStr, Quote);
      MADB_DynstrAppendMem(&StmtStr, TableName, TableNameLength);
      MADB_DynstrAppend(&StmtStr, Quote);
    }
    if (TableType && TableTypeLength && strncmp(TableType, SQL_ALL_TABLE_TYPES, TableTypeLength) != 0)
    {
      unsigned int i;
      char *myTypes[3]= {"TABLE", "VIEW", "SYNONYM"};
      MADB_DynstrAppend(&StmtStr, " AND TABLE_TYPE IN (''");
      for (i= 0; i < 3; i++)
      {
        if (strstr(TableType, myTypes[i]))
        {
          if (strstr(myTypes[i], "TABLE"))
            MADB_DynstrAppend(&StmtStr, ", 'BASE TABLE'");
          else
          {
            MADB_DynstrAppend(&StmtStr, ", '");
            MADB_DynstrAppend(&StmtStr, myTypes[i]);
            MADB_DynstrAppend(&StmtStr, "'");
          }
        }
      }
      MADB_DynstrAppend(&StmtStr, ") ");
    }
    MADB_DynstrAppend(&StmtStr, " ORDER BY TABLE_SCHEMA, TABLE_NAME, TABLE_TYPE");
  }
  MDBUG_C_PRINT(Stmt->Connection, "SQL Statement: %s", StmtStr.str);

  ret= Stmt->Methods->ExecDirect(Stmt, StmtStr.str, SQL_NTS);
  if (SQL_SUCCEEDED(ret))
  {
    MADB_FixColumnDataTypes(Stmt, SqlTablesColType);
  }

  MADB_DynstrFree(&StmtStr);

  MDBUG_C_RETURN(Stmt->Connection, ret, &Stmt->Error);
}
/* }}} */

static const MADB_ShortTypeInfo SqlStatsColType[13] = {
  {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0},
  {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0},
  {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0},
  {SQL_SMALLINT, 0, SQL_NULLABLE, 0, 0},
  {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0},
  {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0},
  {SQL_SMALLINT, 0, SQL_NO_NULLS, 0, 0},
  {SQL_SMALLINT, 0, SQL_NULLABLE, 0, 0},
  {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0},
  {SQL_CHAR,     0, SQL_NULLABLE, 2, 0},
  {SQL_INTEGER,  0, SQL_NULLABLE, 0, 0},
  {SQL_INTEGER,  0, SQL_NULLABLE, 0, 0},
  {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0},
};

/* {{{ MADB_StmtStatistics */
SQLRETURN MADB_StmtStatistics(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT NameLength1,
                              char *SchemaName, SQLSMALLINT NameLength2,
                              char *TableName, SQLSMALLINT NameLength3,
                              SQLUSMALLINT Unique, SQLUSMALLINT Reserved)
{
  char StmtStr[1024];
  char *p= StmtStr;
  
  SQLRETURN ret;

  MADB_CLEAR_ERROR(&Stmt->Error);

  /* TableName is mandatory */
  if (!TableName || !NameLength3)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY009, "Tablename is required", 0);
    return Stmt->Error.ReturnValue;
  }
 
  _snprintf(StmtStr, 1024, "SELECT TABLE_SCHEMA AS TABLE_CAT, NULL AS TABLE_SCHEM, TABLE_NAME, "
                             "NON_UNIQUE, NULL AS INDEX_QUALIFIER, INDEX_NAME, "
                             "%d AS TYPE, "
                             "SEQ_IN_INDEX AS ORDINAL_POSITION, COLUMN_NAME, COLLATION AS ASC_OR_DESC, "
                             "CARDINALITY, NULL AS PAGES, NULL AS FILTER_CONDITION "
                             "FROM INFORMATION_SCHEMA.STATISTICS ",
                             SQL_INDEX_OTHER);
  p+= strlen(StmtStr);
  if (CatalogName && CatalogName[0])
    p+= _snprintf(p, 1023 - strlen(StmtStr), "WHERE TABLE_SCHEMA LIKE '%s' ", CatalogName);
  else
    p+= _snprintf(p, 1023 - strlen(StmtStr), "WHERE TABLE_SCHEMA LIKE IF(DATABASE() IS NOT NULL, DATABASE(), '%%') ");
  
  if (TableName)
    p+= _snprintf(p, 1023- strlen(StmtStr), "AND TABLE_NAME LIKE '%s' ", TableName);

  if (Unique == SQL_INDEX_UNIQUE)
    p+= _snprintf(p, 1023 - strlen(StmtStr), "AND NON_UNIQUE=0 ");

  _snprintf(p, 1023 - strlen(StmtStr), "ORDER BY NON_UNIQUE, INDEX_NAME, ORDINAL_POSITION");


  ret= Stmt->Methods->ExecDirect(Stmt, StmtStr, SQL_NTS);

  if (SQL_SUCCEEDED(ret))
  {
    MADB_FixColumnDataTypes(Stmt, SqlStatsColType);
  }
  return ret;
}
/* }}} */

#define SQL_COLUMNS_FIELD_COUNT 18

static const char * SqlColumnsFieldNames[SQL_COLUMNS_FIELD_COUNT] = {
    "TABLE_CAT",
    "TABLE_SCHEM",
    "TABLE_NAME",
    "COLUMN_NAME",
    "DATA_TYPE",
    "TYPE_NAME",
    "COLUMN_SIZE",
    "BUFFER_LENGTH",
    "DECIMAL_DIGITS",
    "NUM_PREC_RADIX",
    "NULLABLE",
    "REMARKS",
    "COLUMN_DEF",
    "SQL_DATA_TYPE",
    "SQL_DATETIME_SUB",
    "CHAR_OCTET_LENGTH",
    "ORDINAL_POSITION",
    "IS_NULLABLE"
};

static const enum enum_field_types SqlColumnsFieldTypes[SQL_COLUMNS_FIELD_COUNT] = {
    SQL_VARCHAR,
    SQL_VARCHAR,
    SQL_VARCHAR,
    SQL_VARCHAR,
    SQL_SMALLINT,
    SQL_VARCHAR,
    SQL_INTEGER,
    SQL_INTEGER,
    SQL_SMALLINT,
    SQL_SMALLINT,
    SQL_SMALLINT,
    SQL_VARCHAR,
    SQL_VARCHAR,
    SQL_SMALLINT,
    SQL_SMALLINT,
    SQL_INTEGER,
    SQL_INTEGER,
    SQL_VARCHAR
};

static const MADB_ShortTypeInfo SqlColumnsColType[SQL_COLUMNS_FIELD_COUNT] = {
    {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0}, // TABLE_CAT
    {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0}, // TABLE_SCHEM
    {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0}, // TABLE_NAME
    {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0}, // COLUMN_NAME
    {SQL_SMALLINT, 0, SQL_NO_NULLS, 0, 0}, // DATA_TYPE
    {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 0}, // TYPE_NAME
    {SQL_INTEGER,  0, SQL_NULLABLE, 0, 0}, // COLUMN_SIZE
    {SQL_INTEGER,  0, SQL_NULLABLE, 0, 0}, // BUFFER_LENGTH
    {SQL_SMALLINT, 0, SQL_NULLABLE, 0, 0}, // DECIMAL_DIGITS
    {SQL_SMALLINT, 0, SQL_NULLABLE, 0, 0}, // NUM_PREC_RADIX
    {SQL_SMALLINT, 0, SQL_NO_NULLS, 0, 0}, // NULLABLE
    {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0}, // REMARKS
    {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0}, // COLUMN_DEF
    {SQL_SMALLINT, 0, SQL_NO_NULLS, 0, 0}, // SQL_DATA_TYPE
    {SQL_SMALLINT, 0, SQL_NULLABLE, 0, 0}, // SQL_DATETIME_SUB
    {SQL_INTEGER,  0, SQL_NULLABLE, 0, 0}, // CHAR_OCTET_LENGTH
    {SQL_INTEGER,  0, SQL_NO_NULLS, 0, 0}, // ORDINAL_POSITION
    {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 0}, // IS_NULLABLE
};

short allocAndFormatInt(char **buf, int value)
{
    // maximum 11 chars for a 32-bit signed integer
    if (!(*buf = malloc(12)))
      return 1;
    sprintf(*buf, "%d", value);
    return 0;
}

void freeData(char ***data, int nRows, int nCols, const short *needFree)
{
  int i, j;
  for (i = 0; i < nRows; i++)
  {
    for (j = 0; j < nCols; j++)
    {
      if (data[i][j] && needFree[j]) free(data[i][j]);
    }
    if (data[i])
      free(data[i]);
  }
  free(data);
}

/* {{{ MADB_StmtColumnsNoInfoSchema */
SQLRETURN MADB_StmtColumnsNoInfoSchema(MADB_Stmt *Stmt,
                           char *CatalogName, SQLSMALLINT NameLength1,
                           char *SchemaName,  SQLSMALLINT NameLength2,
                           char *TableName,   SQLSMALLINT NameLength3,
                           char *ColumnName,  SQLSMALLINT NameLength4)
{
  MYSQL_RES *tables_res, *columns_res, *show_columns_res;
  MYSQL_ROW table_row, columns_row;
  unsigned long *table_lengths, *columns_lengths;
  SQLSMALLINT concise_data_type, odbc_data_type, sql_data_type, digits, is_signed;
  size_t precision;

  FieldDescrList *tableFields;
  FieldDescr *S2FieldDescr;

  SQLSMALLINT char_size = 1;
  MARIADB_CHARSET_INFO *charset;

  if (CatalogName && NameLength1 <= 0)
    NameLength1 = strlen(CatalogName);
  if (SchemaName && NameLength2 <= 0)
    NameLength2 = strlen(SchemaName);
  if (TableName && NameLength3 <= 0)
    NameLength3 = strlen(TableName);
  if (ColumnName && NameLength4 <= 0)
    NameLength4 = strlen(ColumnName);

  // In SingleStore 7.5, utf8mb4 charsetnr is reported as utf8, so we set
  // field charset to database default charset
  unsigned long s2_version = single_store_get_server_version(Stmt->Connection->mariadb);
  int force_db_charset = s2_version >= 70500 && s2_version < 70800;

  // get the list of matching tables
  tables_res = S2_ShowTables(Stmt, CatalogName, NameLength1, TableName, NameLength3, TRUE);
  if (!tables_res)
    return Stmt->Error.ReturnValue;

  int n_rows = 0, allocated_rows = 256;
  char ***formatted_table_ptr = (char***)calloc(allocated_rows, sizeof(char**)), ***temp_ptr = NULL;
  char **current_row_ptr;
  MYSQL_FIELD *field;
  SQLLEN column_char_length, column_length;

  short is_alloc_fail = 0;
  // we don't allocate memory at:
  // pos 1: TABLE_SCHEM is always NULL;
  // pos 5: MADB_TypeName returns string literal
  // pos 17: literal "YES" or "NO" is written there
  const short need_free[SQL_COLUMNS_FIELD_COUNT] = {1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0};

  while ((table_row = mysql_fetch_row(tables_res)))
  {
    table_lengths = mysql_fetch_lengths(tables_res);

    // for each table get the list of columns in it
    if (!(columns_res = S2_ListFields(
      Stmt, CatalogName, NameLength1, table_row[0], table_lengths[0])))
    {
      free(formatted_table_ptr);
      mysql_free_result(tables_res);
      return Stmt->Error.ReturnValue;
    }
    if (!(show_columns_res = S2_ShowColumnsInTable(
        Stmt, CatalogName, NameLength1, table_row[0], table_lengths[0], ColumnName, NameLength4)))
    {
      free(formatted_table_ptr);
      mysql_free_result(tables_res);
      mysql_free_result(columns_res);
      return Stmt->Error.ReturnValue;
    }
    tableFields = ProcessShowColumns(show_columns_res);

    int ordinal_number = 0;
    // process columns to match ODBC spec
    while ((field = mysql_fetch_field(columns_res)))
    {
      if (n_rows >= allocated_rows)
      {
        temp_ptr = realloc(formatted_table_ptr, (allocated_rows = 2 * allocated_rows) * sizeof(char**));
        if (!temp_ptr)
        {
          MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to allocate memory for columns data", 0);
          goto end_with_error;
        }
        formatted_table_ptr = temp_ptr;
      }
      current_row_ptr = formatted_table_ptr[n_rows] = (char**)calloc(SQL_COLUMNS_FIELD_COUNT, sizeof(char*));

      concise_data_type = MapMariadDbToOdbcType(field);
      if (field->charsetnr != BINARY_CHARSETNR && !Stmt->Connection->IsAnsi)
      {
        concise_data_type = MADB_GetWCharType(concise_data_type);
      }
      if (Stmt->Connection->Environment->OdbcVersion == SQL_OV_ODBC2)
      {
        odbc_data_type = MapToV2Type(concise_data_type);
      }
      else
      {
        odbc_data_type = concise_data_type;
      }
      SQLSMALLINT sql_data_type = MADB_GetTypeFromConciseType(concise_data_type);

      const MADB_TypeInfo* odbc_type_info = GetTypeInfo(concise_data_type, field);
      if (!odbc_type_info)
      {
        char err_msg[128];
        sprintf(err_msg, "Failed to get type data for SQL Type %d MYSQL type %d\n", concise_data_type, field->type);
        MADB_SetError(&Stmt->Error, MADB_ERR_HY001, err_msg, 0);
        goto end_with_error;
      }
      S2FieldDescr = GetFieldDescr(field->name, tableFields);
      if (S2FieldDescr)
      {
        ++n_rows;
      }
      else
      {
        // in this case field is filtered by column_like in `SHOW COLUMNS FROM ... LIKE <column_like>`
        // so we should skip it
        continue;
      }
      // TABLE_CAT
      is_alloc_fail |= !(uintptr_t)(current_row_ptr[0] = strdup(NameLength1 > 0 ? CatalogName : Stmt->Connection->mariadb->db));
      // TABLE_SCHEM
      current_row_ptr[1] = NULL;
      // TABLE_NAME
      is_alloc_fail |= !(uintptr_t)(current_row_ptr[2] = strdup(field->table));
      // COLUMN_NAME
      is_alloc_fail |= !(uintptr_t)(current_row_ptr[3] = strdup(field->name));
      // DATA_TYPE
      is_alloc_fail |= allocAndFormatInt(&current_row_ptr[4], odbc_data_type);
      // TYPE_NAME
      // we don't just use MADB_GetTypeName because it works with MYSQL_FIELD only,
      // which could have already lost some information about the actual database type
      if (!strcmp(S2FieldDescr->FieldTypeS2, "geography"))
        current_row_ptr[5] = "geography";
      else if (!strcmp(S2FieldDescr->FieldTypeS2, "geographypoint"))
        current_row_ptr[5] = "geographypoint";
      else if (!strncmp(S2FieldDescr->FieldTypeS2, "enum", 4))
        current_row_ptr[5] = "enum";
      else if (!strncmp(S2FieldDescr->FieldTypeS2, "set", 3))
        current_row_ptr[5] = "set";
      else
        current_row_ptr[5] = MADB_GetTypeName(field);
      // BUFFER_LENGTH
      if ((column_length = MADB_GetOctetLength(field)) != SQL_NO_TOTAL)
        is_alloc_fail |= allocAndFormatInt(&current_row_ptr[7], column_length);
      // DECIMAL_DIGITS
      if ((digits = MADB_GetDecimalDigits(field)) != SQL_NO_TOTAL)
        is_alloc_fail |= allocAndFormatInt(&current_row_ptr[8], digits);
      // NUM_PREC_RADIX
      if (odbc_type_info->NumPrecRadix)
        is_alloc_fail |= allocAndFormatInt(&current_row_ptr[9], odbc_type_info->NumPrecRadix);
      // COLUMN_SIZE
      if (field->charsetnr != BINARY_CHARSETNR )
      {
        charset = mariadb_get_charset_by_nr(field->charsetnr);
        char_size = charset ? charset->char_maxlen : 4;
      }
      precision = field->length - test((field->flags & UNSIGNED_FLAG) == 0) - test(field->decimals != 0);
      is_signed = !(field->flags & UNSIGNED_FLAG);
      if ((column_char_length = MADB_GetDataSize(concise_data_type, column_length, is_signed, precision, field->decimals, char_size)) != SQL_NO_TOTAL)
      {
        // mediumint maps to SQL_INTEGER which is 4 byte instead of 3
        if (!strncmp(S2FieldDescr->FieldTypeS2, "mediumint", 9))
          column_char_length = 7;
        if (!strncmp(S2FieldDescr->FieldTypeS2, "mediumint unsigned", 18))
          column_char_length = 8;
        if (!strncmp(S2FieldDescr->FieldTypeS2, "year", 4))
          column_char_length = 4;
        is_alloc_fail |= allocAndFormatInt(&current_row_ptr[6], column_char_length);
      }
      // NULLABLE
      is_alloc_fail |= allocAndFormatInt(&current_row_ptr[10], !(field->flags & NOT_NULL_FLAG));
      // IS_NULLABLE
      current_row_ptr[17] = (field->flags & NOT_NULL_FLAG) ? "NO" : "YES";
      // REMARKS
      current_row_ptr[11] = NULL;
      // COLUMN_DEF
      if (S2FieldDescr->DefaultValue)
      {
        is_alloc_fail |= !(uintptr_t)(current_row_ptr[12] = strdup(S2FieldDescr->DefaultValue));
      }
      // SQL_DATA_TYPE (non-concise)
      is_alloc_fail |= allocAndFormatInt(&current_row_ptr[13], sql_data_type);
      // SQL_DATETIME_SUB
      if (is_datetime_sql_type(concise_data_type))
        is_alloc_fail |= allocAndFormatInt(&current_row_ptr[14], odbc_type_info->SqlDateTimeSub);
      if ((is_char_sql_type(concise_data_type) || is_wchar_sql_type(concise_data_type) ||
          is_binary_sql_type(concise_data_type)) && column_length != SQL_NO_TOTAL)
      {
        // CHAR_OCTET_LENGTH
        is_alloc_fail |= allocAndFormatInt(&current_row_ptr[15], column_length);
      }
      // ORDINAL_POSITION
      is_alloc_fail |= allocAndFormatInt(&current_row_ptr[16], ++ordinal_number);
      if (is_alloc_fail)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to allocate memory for columns data", 0);
        goto end_with_error;
      }
    }
    FreeFieldDescrList(tableFields);
    mysql_free_result(columns_res);
    mysql_free_result(show_columns_res);
  }
  mysql_free_result(tables_res);
  // link statement result to the processed columns
  if (!SQL_SUCCEEDED(MADB_FakeRequest(
    Stmt, SqlColumnsFieldNames, SqlColumnsFieldTypes, SQL_COLUMNS_FIELD_COUNT, formatted_table_ptr, n_rows)))
  {
    freeData(formatted_table_ptr, n_rows, SQL_COLUMNS_FIELD_COUNT, need_free);
    return Stmt->Error.ReturnValue;
  }
  MADB_FixColumnDataTypes(Stmt, SqlColumnsColType);
  freeData(formatted_table_ptr, n_rows, SQL_COLUMNS_FIELD_COUNT, need_free);
  return SQL_SUCCESS;

end_with_error:
  FreeFieldDescrList(tableFields);
  mysql_free_result(tables_res);
  mysql_free_result(columns_res);
  mysql_free_result(show_columns_res);
  freeData(formatted_table_ptr, n_rows, SQL_COLUMNS_FIELD_COUNT, need_free);
  return Stmt->Error.ReturnValue;
}
/* }}} */

/* {{{ MADB_StmtColumns */
SQLRETURN MADB_StmtColumns(MADB_Stmt *Stmt,
                           char *CatalogName, SQLSMALLINT NameLength1,
                           char *SchemaName,  SQLSMALLINT NameLength2,
                           char *TableName,   SQLSMALLINT NameLength3,
                           char *ColumnName,  SQLSMALLINT NameLength4)
{
  MADB_DynString StmtStr;
  SQLRETURN ret;

  MDBUG_C_ENTER(Stmt->Connection, "StmtColumns");

  MADB_InitDynamicString(&StmtStr, "", 8192, 1024);
 
  MADB_CLEAR_ERROR(&Stmt->Error);
  if (MADB_DynstrAppend(&StmtStr, MADB_COLUMNS(Stmt)))
  {
      ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
      goto end;
  }

  ADJUST_LENGTH(CatalogName, NameLength1);
  ADJUST_LENGTH(SchemaName, NameLength2);
  ADJUST_LENGTH(TableName, NameLength3);
  ADJUST_LENGTH(ColumnName, NameLength4);

  if(MADB_DynstrAppend(&StmtStr, " WHERE TABLE_SCHEMA = "))
  {
      ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
      goto end;
  }

  if (CatalogName)
  {
    if (MADB_DynstrAppend(&StmtStr, "'") ||
        MADB_DynstrAppendMem(&StmtStr, CatalogName, NameLength1) ||
        MADB_DynstrAppend(&StmtStr, "' "))
    {
        ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
        goto end;
    }
  }
  else
  {
      if (MADB_DynstrAppend(&StmtStr, "DATABASE() "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }

  if (TableName)
  {
      if (MADB_DynstrAppend(&StmtStr, "AND TABLE_NAME LIKE '") ||
          MADB_DynstrAppendMem(&StmtStr, TableName, NameLength3) ||
          MADB_DynstrAppend(&StmtStr, "' "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }

  if (ColumnName)
  {
      if (MADB_DynstrAppend(&StmtStr, "AND COLUMN_NAME LIKE '") ||
          MADB_DynstrAppendMem(&StmtStr, ColumnName, NameLength4) ||
          MADB_DynstrAppend(&StmtStr, "' "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }

  if (MADB_DynstrAppend(&StmtStr, " ORDER BY TABLE_SCHEMA, TABLE_NAME, ORDINAL_POSITION"))
  {
      ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
      goto end;
  }

  MDBUG_C_DUMP(Stmt->Connection, StmtStr.str, s);

  ret= Stmt->Methods->ExecDirect(Stmt, StmtStr.str, SQL_NTS);

  if (SQL_SUCCEEDED(ret))
  {
    MADB_FixColumnDataTypes(Stmt, SqlColumnsColType);
  }
  MDBUG_C_DUMP(Stmt->Connection, ret, d);

end:
  MADB_DynstrFree(&StmtStr);
  return ret;
}
/* }}} */

static MadbErrNo ProcedureColumnsNormal(INOUT char* const StmtStr, const char* const StmtEnd, INOUT size_t* const Offset,
                                        const char* const CatalogName, const SQLSMALLINT CatalogNameLength,
                                        const char* const SchemaName, const SQLSMALLINT  SchemaNameLength,
                                        const char* const ProcName, const SQLSMALLINT ProcNameLength,
                                        const char* const ColumnName, const SQLSMALLINT ColumnNameLength)
{
    char* p= StmtStr + *Offset;

    assert(StmtStr && StmtEnd);
    assert(p < StmtEnd);

    /* Print the search parameters */
    if (CatalogName)
        p+= snprintf(p, StmtEnd - p, "WHERE SPECIFIC_SCHEMA='%.*s' ", CatalogNameLength, CatalogName);
    else
        p+= snprintf(p, StmtEnd - p, "WHERE SPECIFIC_SCHEMA LIKE DATABASE() ");

    if (p >= StmtEnd)
        return MADB_ERR_HY001;

    if (ProcName) {
        p+= snprintf(p, StmtEnd - p, "AND SPECIFIC_NAME LIKE '%.*s' ", ProcNameLength, ProcName);

        if (p >= StmtEnd)
            return MADB_ERR_HY001;
    }

    if (ColumnName)
    {
        if (ColumnName[0])
        {
            p+= snprintf(p, StmtEnd - p, "AND PARAMETER_NAME LIKE '%.*s' ", ColumnNameLength, ColumnName);
        }
        else
        {
            p+= snprintf(p, StmtEnd - p, "AND PARAMETER_NAME IS NULL ");
        }

        if (p >= StmtEnd)
            return MADB_ERR_HY001;
    }

    /* Update filled buffer length */
    *Offset = p - StmtStr;
    return 0;
}

static MadbErrNo ProcedureColumnsIdentifier(INOUT char* const StmtStr, const char* const StmtEnd, INOUT size_t* const Offset,
                                            const char* const CatalogName, SQLSMALLINT CatalogNameLength,
                                            const char* const SchemaName, SQLSMALLINT  SchemaNameLength,
                                            const char* const ProcName, SQLSMALLINT ProcNameLength,
                                            const char* const ColumnName, SQLSMALLINT ColumnNameLength)
{
    char* CatalogNameFinal;
    char* ProcNameFinal;
    char* ColumnNameFinal;

    char* p= StmtStr + *Offset;

    assert(StmtStr && StmtEnd);
    assert(p < StmtEnd);

    /* https://docs.microsoft.com/en-us/sql/odbc/reference/develop-app/identifier-arguments?view=sql-server-ver15 */
    if (!CatalogName || !SchemaName || !ProcName || !ColumnName) {
        return MADB_ERR_HY009;
    }

    /* Reallocate and process the argument strings */
    CatalogNameFinal= MADB_ALLOCA(CatalogNameLength + IDENTIFIER_BUFFER_OVERHEAD);
    ProcNameFinal= MADB_ALLOCA(ProcNameLength + IDENTIFIER_BUFFER_OVERHEAD);
    ColumnNameFinal= MADB_ALLOCA(ColumnNameLength + IDENTIFIER_BUFFER_OVERHEAD);
    if (!CatalogNameFinal || !ProcNameFinal || !ColumnNameFinal)
    {
        return MADB_ERR_HY001;
    }

    if (ProcessIdentifierString(CatalogNameFinal, CatalogName, CatalogNameLength)
        || ProcessIdentifierString(ProcNameFinal, ProcName, ProcNameLength)
        || ProcessIdentifierString(ColumnNameFinal, ColumnName, ColumnNameLength))
    {
        return MADB_ERR_42000;
    }

    /* Print the processed identifiers */
    p+= snprintf(p, StmtEnd - p, "WHERE SPECIFIC_SCHEMA=%s ", CatalogNameFinal);
    if (p >= StmtEnd)
        return MADB_ERR_HY001;

    p+= snprintf(p, StmtEnd - p, "AND SPECIFIC_NAME=%s ", ProcNameFinal);
    if (p >= StmtEnd)
        return MADB_ERR_HY001;

    p+= snprintf(p, StmtEnd - p, "AND PARAMETER_NAME=%s ", ColumnNameFinal);
    if (p >= StmtEnd)
        return MADB_ERR_HY001;

    /* Update filled buffer length */
    *Offset = p - StmtStr;
    return 0;
}

/* {{{ MADB_StmtProcedureColumns
 * Despite the name, this function works both for procedures and functions in SingleStore
 * It returns an empty set for functions and procedures without parameters */
SQLRETURN MADB_StmtProcedureColumns(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT NameLength1,
                                char *SchemaName, SQLSMALLINT NameLength2, char *ProcName,
                                SQLSMALLINT NameLength3, char *ColumnName, SQLSMALLINT NameLength4)
{
    const char* const QueryPrefix= MADB_PROCEDURE_COLUMNS(Stmt);
    char* StmtStr;
    const char* StmtEnd;
    size_t Length;
    size_t Offset;
    SQLRETURN ret;
    MadbErrNo err;

    MADB_CLEAR_ERROR(&Stmt->Error);

    /* Preprocess the input strings */
    ADJUST_LENGTH(CatalogName, NameLength1);
    ADJUST_LENGTH(SchemaName, NameLength2);
    ADJUST_LENGTH(ProcName, NameLength3);
    ADJUST_LENGTH(ColumnName, NameLength4);

    /* Prepare the common query part without the parameters */
    Offset = strlen(QueryPrefix);
    Length= Offset + 1024;
    StmtStr= MADB_CALLOC(Length);
    StmtEnd = StmtStr + Length;
    if (!StmtStr)
    {
        return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
    }

    memcpy(StmtStr, QueryPrefix, Offset);

    /* Fill in the query parameters, considering SQL_ATTR_METADATA_ID setting */
    err= Stmt->Options.MetadataId
            ? ProcedureColumnsIdentifier(   StmtStr, StmtEnd, &Offset,
                                            CatalogName, NameLength1,
                                            SchemaName, NameLength2,
                                            ProcName, NameLength3,
                                            ColumnName, NameLength4)
            : ProcedureColumnsNormal(   StmtStr, StmtEnd, &Offset,
                                        CatalogName, NameLength1,
                                        SchemaName, NameLength2,
                                        ProcName, NameLength3,
                                        ColumnName, NameLength4);

    /* Add the tail of the query */
    if (!err)
    {
        assert(Offset < Length - 1);

        Offset+= snprintf(StmtStr + Offset, Length - Offset, " ORDER BY SPECIFIC_SCHEMA, SPECIFIC_NAME, ORDINAL_POSITION");
        if (Offset >= Length - 1)
        {
            err= MADB_ERR_HY001;
        }
    }

    /* Execute the DB query */
    if (!err)
    {
        ret= Stmt->Methods->ExecDirect(Stmt, StmtStr, Offset);
    }

    /* Clean up */
    MADB_FREE(StmtStr);
    
    if (err)
    {
        return MADB_SetError(&Stmt->Error, err, NULL, 0);
    }
    else
    {
        return ret;
    }
}
/* }}} */

/* {{{ MADB_StmtPrimaryKeys */
SQLRETURN MADB_StmtPrimaryKeys(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT NameLength1,
                                char *SchemaName, SQLSMALLINT NameLength2, char *TableName,
                                SQLSMALLINT NameLength3)
{
  char StmtStr[2048],
       *p;

  MADB_CLEAR_ERROR(&Stmt->Error);

  /* TableName is mandatory */
  if (!TableName || !NameLength3)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY009, "Tablename is required", 0);
    return Stmt->Error.ReturnValue;
  }

  p= StmtStr;
  p+= _snprintf(p, 1024, "SELECT TABLE_SCHEMA AS TABLE_CAT, NULL AS TABLE_SCHEM, "
                           "TABLE_NAME, COLUMN_NAME, ORDINAL_POSITION KEY_SEQ, "
                           "'PRIMARY' PK_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE "
                           "COLUMN_KEY = 'pri' AND ");
  if (CatalogName && CatalogName[0])
  {
    p+= _snprintf(p, 2048 - strlen(StmtStr), "TABLE_SCHEMA LIKE '%s' ", CatalogName);
  }
  else
  {
    p+= _snprintf(p, 2048 - strlen(StmtStr), "TABLE_SCHEMA LIKE IF(DATABASE() IS NOT NULL, DATABASE(), '%%') ");
  }
  if (TableName)
  {
    p+= _snprintf(p, 2048 - strlen(StmtStr), "AND TABLE_NAME LIKE '%s' ", TableName);
  }
  p+= _snprintf(p, 2048 - strlen(StmtStr), " ORDER BY TABLE_SCHEMA, TABLE_NAME, ORDINAL_POSITION");

  return Stmt->Methods->ExecDirect(Stmt, StmtStr, SQL_NTS);
}
/* }}} */

#define SQL_PRIMARY_KEYS_FIELD_COUNT 6

static const char * SqlPrimaryKeysFieldNames[SQL_PRIMARY_KEYS_FIELD_COUNT] = {
    "TABLE_CAT",
    "TABLE_SCHEM",
    "TABLE_NAME",
    "COLUMN_NAME",
    "KEY_SEQ",
    "PK_NAME"
};

static const enum enum_field_types  SqlPrimaryKeysFieldTypes[SQL_PRIMARY_KEYS_FIELD_COUNT] = {
    SQL_VARCHAR,
    SQL_VARCHAR,
    SQL_VARCHAR,
    SQL_VARCHAR,
    SQL_SMALLINT,
    SQL_VARCHAR
};

static const MADB_ShortTypeInfo SqlPrimaryKeysColType[SQL_PRIMARY_KEYS_FIELD_COUNT] = {
    {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 21844},  // TABLE_CAT
    {SQL_VARCHAR,  0, SQL_NULLABLE, 0, 21844},  // TABLE_SCHEM
    {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 21844},  // TABLE_NAME
    {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 21844},  // COLUMN_NAME
    {SQL_SMALLINT, 0, SQL_NO_NULLS, 0, 0},      // KEY_SEQ
    {SQL_VARCHAR,  0, SQL_NO_NULLS, 0, 21844}   // PK_NAME
};

/* {{{ MADB_StmtPrimaryKeysNoInfoSchema */
SQLRETURN MADB_StmtPrimaryKeysNoInfoSchema(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT NameLength1,
                                char *SchemaName, SQLSMALLINT NameLength2, char *TableName,
                                SQLSMALLINT NameLength3)
{
  MADB_CLEAR_ERROR(&Stmt->Error);
  MYSQL_RES *tables_res, *show_keys_res;
  MYSQL_ROW table_row, keys_row;
  unsigned long *table_lengths, *keys_lengths;

  /* TableName is mandatory */
  if (!TableName || !NameLength3)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY009, "Tablename is required", 0);
    return Stmt->Error.ReturnValue;
  }

  if (CatalogName && NameLength1 <= 0)
    NameLength1 = strlen(CatalogName);
  if (SchemaName && NameLength2 <= 0)
    NameLength2 = strlen(SchemaName);
  if (TableName && NameLength3 <= 0)
    NameLength3 = strlen(TableName);

  if ( !(tables_res = S2_ShowTables(Stmt, CatalogName, NameLength1, TableName, NameLength3, TRUE)) )
    return Stmt->Error.ReturnValue;

  int n_rows = 0, allocated_rows = 8;
  char ***formatted_table_ptr = (char***)calloc(allocated_rows, sizeof(char**)), ***temp_ptr = NULL;
  char **current_row_ptr;
  MYSQL_FIELD *field;
  short is_alloc_fail = 0;
  const short need_free[SQL_PRIMARY_KEYS_FIELD_COUNT] = {1, 1, 1, 1, 1, 0};

  table_row = mysql_fetch_row(tables_res);
  table_lengths = mysql_fetch_lengths(tables_res);

  if (table_row)
  {
      if ( !(show_keys_res = S2_ShowKeysInTable(
        Stmt, CatalogName, NameLength1, table_row[0], table_lengths[0])) )
    {
      free(formatted_table_ptr);
      mysql_free_result(tables_res);
      mysql_free_result(show_keys_res);
      return Stmt->Error.ReturnValue;
    }
    while ( (keys_row = mysql_fetch_row(show_keys_res)) )
    // keys_row consists of the following fields:
    // Table Non_unique Key_name Seq_in_index Column_name Collation
    // Cardinality Sub_part Packed Null Index_type Comment Index_comment
    {
      keys_lengths = mysql_fetch_lengths(show_keys_res);
      if (strcmp(keys_row[2], "PRIMARY"))
        continue;

      if (n_rows >= allocated_rows)
      {
        temp_ptr = realloc(formatted_table_ptr, allocated_rows = 2 * allocated_rows);
        if (!temp_ptr)
        {
          mysql_free_result(tables_res);
          mysql_free_result(show_keys_res);
          freeData(formatted_table_ptr, n_rows, SQL_COLUMNS_FIELD_COUNT, need_free);
          return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to allocate memory for columns data", 0);
        }
        formatted_table_ptr = temp_ptr;
      }
      current_row_ptr = formatted_table_ptr[n_rows] = (char**)calloc(SQL_PRIMARY_KEYS_FIELD_COUNT, sizeof(char*));
      ++n_rows;
       // TABLE_CAT
      is_alloc_fail |= !(uintptr_t)(current_row_ptr[0] = strdup(NameLength1 > 0 ? CatalogName : Stmt->Connection->mariadb->db));
      // TABLE_SCHEM
      current_row_ptr[1] = NULL;
      // TABLE_NAME
      is_alloc_fail |= !(uintptr_t)(current_row_ptr[2] = strndup(keys_row[0], keys_lengths[0]));
      // COLUMN_NAME
      is_alloc_fail |= !(uintptr_t)(current_row_ptr[3] = strndup(keys_row[4], keys_lengths[4]));
      // KEY_SEQ
      is_alloc_fail |= !(uintptr_t)(current_row_ptr[4] = strndup(keys_row[3], keys_lengths[3]));
      // PK_NAME
      current_row_ptr[5] = "PRIMARY";
      if (is_alloc_fail)
      {
        mysql_free_result(tables_res);
        mysql_free_result(show_keys_res);
        freeData(formatted_table_ptr, n_rows, SQL_PRIMARY_KEYS_FIELD_COUNT, need_free);
        return MADB_SetError(&Stmt->Error, MADB_ERR_HY001, "Failed to allocate memory for columns data", 0);
      }
    }
  
    mysql_free_result(show_keys_res);
  }

  mysql_free_result(tables_res);
  
  // link statement result to the processed columns
  if (!SQL_SUCCEEDED(MADB_FakeRequest(
    Stmt, SqlPrimaryKeysFieldNames, SqlPrimaryKeysFieldTypes, SQL_PRIMARY_KEYS_FIELD_COUNT, formatted_table_ptr, n_rows)))
  {
    freeData(formatted_table_ptr, n_rows, SQL_PRIMARY_KEYS_FIELD_COUNT, need_free);
    return Stmt->Error.ReturnValue;
  }
  MADB_FixColumnDataTypes(Stmt, SqlPrimaryKeysColType);
  freeData(formatted_table_ptr, n_rows, SQL_PRIMARY_KEYS_FIELD_COUNT, need_free);
  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_StmtSpecialColumns */
SQLRETURN MADB_StmtSpecialColumns(MADB_Stmt *Stmt, SQLUSMALLINT IdentifierType,
                                  char *CatalogName, SQLSMALLINT NameLength1, 
                                  char *SchemaName, SQLSMALLINT NameLength2,
                                  char *TableName, SQLSMALLINT NameLength3,
                                  SQLUSMALLINT Scope, SQLUSMALLINT Nullable)
{
  MADB_DynString StmtStr;
  SQLRETURN ret;

  MDBUG_C_ENTER(Stmt->Connection, "StmtSpecialColumns");

  /* TableName is mandatory */
  if (!TableName || !NameLength3)
  {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY009, "TableName is required", 0);
      return Stmt->Error.ReturnValue;
  }

  MADB_InitDynamicString(&StmtStr, "", 2048, 1024);

  MADB_CLEAR_ERROR(&Stmt->Error);
  if (MADB_DynstrAppend(&StmtStr, MADB_SPECIAL_COLUMNS(Stmt)))
  {
      ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
      goto end;
  }

  ADJUST_LENGTH(CatalogName, NameLength1);
  ADJUST_LENGTH(SchemaName, NameLength2);
  ADJUST_LENGTH(TableName, NameLength3);

  if(MADB_DynstrAppend(&StmtStr, " WHERE TABLE_SCHEMA = "))
  {
      ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
      goto end;
  }

  if (CatalogName)
  {
      if (MADB_DynstrAppend(&StmtStr, "'") ||
          MADB_DynstrAppendMem(&StmtStr, CatalogName, NameLength1) ||
          MADB_DynstrAppend(&StmtStr, "' "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }
  else
  {
      if (MADB_DynstrAppend(&StmtStr, "DATABASE() "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }

  if (TableName && NameLength3)
  {
      if (MADB_DynstrAppend(&StmtStr, "AND TABLE_NAME LIKE '") ||
          MADB_DynstrAppendMem(&StmtStr, TableName, NameLength3) ||
          MADB_DynstrAppend(&StmtStr, "' "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }

  if (Nullable == SQL_NO_NULLS)
  {
      if (MADB_DynstrAppend(&StmtStr, "AND IS_NULLABLE <> 'YES' "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }

  if (IdentifierType == SQL_BEST_ROWID)
  {
      if (MADB_DynstrAppend(&StmtStr, "AND COLUMN_KEY IN ('PRI', 'UNI') "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }
  else if (IdentifierType == SQL_ROWVER)
  {
      // https://docs.singlestore.com/cloud/reference/sql-reference/data-definition-language-ddl/create-table/#on-update-behavior
      // Additionally filter for keys that can't be auto updated
      if (MADB_DynstrAppend(&StmtStr, "AND EXTRA LIKE '%%on update%%' AND COLUMN_KEY NOT IN ('PRI', 'UNI') "))
      {
          ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
          goto end;
      }
  }

  if (MADB_DynstrAppend(&StmtStr, " ORDER BY TABLE_SCHEMA, TABLE_NAME, COLUMN_KEY"))
  {
      ret = MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);
      goto end;
  }

  ret= Stmt->Methods->ExecDirect(Stmt, StmtStr.str, SQL_NTS);
  MDBUG_C_DUMP(Stmt->Connection, ret, d);

end:
  MADB_DynstrFree(&StmtStr);
  return ret;
}
/* }}} */

/* {{{ MADB_StmtProcedures */
SQLRETURN MADB_StmtProcedures(MADB_Stmt *Stmt, char *CatalogName, SQLSMALLINT NameLength1,
                              char *SchemaName, SQLSMALLINT NameLength2, char *ProcName,
                              SQLSMALLINT NameLength3)
{
   char StmtStr[2048],
       *p;

  MADB_CLEAR_ERROR(&Stmt->Error);

  p= StmtStr;

  p+= _snprintf(p, 2048, "SELECT ROUTINE_SCHEMA AS PROCEDURE_CAT, NULL AS PROCEDURE_SCHEM, "
                           "SPECIFIC_NAME PROCEDURE_NAME, NULL NUM_INPUT_PARAMS, "
                           "NULL NUM_OUTPUT_PARAMS, NULL NUM_RESULT_SETS, "
                           "ROUTINE_COMMENT REMARKS, "
                           "CASE ROUTINE_TYPE "
                           "  WHEN 'FUNCTION' THEN " XSTR(SQL_PT_FUNCTION)
                           "  WHEN 'PROCEDURE' THEN " XSTR(SQL_PT_PROCEDURE)
                           "  ELSE " XSTR(SQL_PT_UNKNOWN) " "
                           "END PROCEDURE_TYPE "
                           "FROM INFORMATION_SCHEMA.ROUTINES ");
  if (CatalogName && CatalogName[0])
    p+= _snprintf(p, 2048 - strlen(StmtStr), "WHERE ROUTINE_SCHEMA LIKE '%s' ", CatalogName);
  else
    p+= _snprintf(p, 2048 - strlen(StmtStr), "WHERE ROUTINE_SCHEMA LIKE DATABASE() ");
  if (ProcName && ProcName[0])
    p+= _snprintf(p, 2048 - strlen(StmtStr), "AND SPECIFIC_NAME LIKE '%s' ", ProcName);
  
  p+= _snprintf(p, 2048 - strlen(StmtStr), " ORDER BY ROUTINE_SCHEMA, SPECIFIC_NAME");

  return Stmt->Methods->ExecDirect(Stmt, StmtStr, SQL_NTS);
}
/* }}} */

/* {{{ SQLForeignKeys */
SQLRETURN MADB_StmtForeignKeys(MADB_Stmt *Stmt, char *PKCatalogName, SQLSMALLINT NameLength1,
                               char *PKSchemaName, SQLSMALLINT NameLength2, char *PKTableName,
                               SQLSMALLINT NameLength3, char *FKCatalogName, SQLSMALLINT NameLength4,
                               char *FKSchemaName, SQLSMALLINT NameLength5,  char *FKTableName,
                               SQLSMALLINT NameLength6)
{
  SQLRETURN ret= SQL_ERROR;
  MADB_DynString StmtStr;
  char EscapeBuf[256];

  MADB_CLEAR_ERROR(&Stmt->Error);

  ADJUST_LENGTH(PKCatalogName, NameLength1);
  ADJUST_LENGTH(PKSchemaName, NameLength2);
  ADJUST_LENGTH(PKTableName, NameLength3);
  ADJUST_LENGTH(FKCatalogName, NameLength4);
  ADJUST_LENGTH(FKSchemaName, NameLength5);
  ADJUST_LENGTH(FKTableName, NameLength6);



  /* PKTableName and FKTableName are mandatory */
  if ((!PKTableName || !NameLength3) && (!FKTableName || !NameLength6))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY009, "PKTableName or FKTableName are required", 0);
    return Stmt->Error.ReturnValue;
  }

  /* modified from JDBC driver */
  MADB_InitDynamicString(&StmtStr,
                      "SELECT A.REFERENCED_TABLE_SCHEMA PKTABLE_CAT, NULL PKTABLE_SCHEM, "
                      "A.REFERENCED_TABLE_NAME PKTABLE_NAME, " 
                      "A.REFERENCED_COLUMN_NAME PKCOLUMN_NAME, "
                      "A.TABLE_SCHEMA FKTABLE_CAT, NULL FKTABLE_SCHEM, "
                      "A.TABLE_NAME FKTABLE_NAME, A.COLUMN_NAME FKCOLUMN_NAME, "
                      "A.POSITION_IN_UNIQUE_CONSTRAINT KEY_SEQ, "
                      "CASE update_rule "
                      "  WHEN 'RESTRICT' THEN " XSTR(SQL_RESTRICT)
                    "  WHEN 'NO ACTION' THEN " XSTR(SQL_NO_ACTION)
                      "  WHEN 'CASCADE' THEN " XSTR(SQL_CASCADE)
                      "  WHEN 'SET NULL' THEN " XSTR(SQL_SET_NULL)
                      "  WHEN 'SET DEFAULT' THEN " XSTR(SQL_SET_DEFAULT) " "
                      "END UPDATE_RULE, "
                      "CASE DELETE_RULE" 
                      "  WHEN 'RESTRICT' THEN " XSTR(SQL_RESTRICT)
                      "  WHEN 'NO ACTION' THEN " XSTR(SQL_NO_ACTION)
                      "  WHEN 'CASCADE' THEN " XSTR(SQL_CASCADE)
                      "  WHEN 'SET NULL' THEN " XSTR(SQL_SET_NULL)
                      "  WHEN 'SET DEFAULT' THEN " XSTR(SQL_SET_DEFAULT) " "
                      " END DELETE_RULE,"
                      "A.CONSTRAINT_NAME FK_NAME, "
                      "'PRIMARY' PK_NAME,"
                      XSTR(SQL_NOT_DEFERRABLE) " AS DEFERRABILITY "
                      " FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE A"
                      " JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE B"
                      " ON (B.TABLE_SCHEMA = A.REFERENCED_TABLE_SCHEMA"
                      " AND B.TABLE_NAME = A.REFERENCED_TABLE_NAME"
                      " AND B.COLUMN_NAME = A.REFERENCED_COLUMN_NAME)"
                      " JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS RC"
                      " ON (RC.CONSTRAINT_NAME = A.CONSTRAINT_NAME"
                      " AND RC.TABLE_NAME = A.TABLE_NAME"
                      " AND RC.CONSTRAINT_SCHEMA = A.TABLE_SCHEMA)"
                      " WHERE B.CONSTRAINT_NAME= 'PRIMARY'",
                      8192, 128);

  if (PKTableName && PKTableName[0])
  {
    MADB_DynstrAppend(&StmtStr, " AND A.REFERENCED_TABLE_SCHEMA "); 

    if (PKCatalogName && PKCatalogName[0])
    {
      MADB_DynstrAppend(&StmtStr, "LIKE '");
      mysql_real_escape_string(Stmt->Connection->mariadb, EscapeBuf, PKCatalogName, MIN(NameLength1, 255));
      MADB_DynstrAppend(&StmtStr, EscapeBuf);
      MADB_DynstrAppend(&StmtStr, "' ");
    }
    else 
      MADB_DynstrAppend(&StmtStr, "= DATABASE()");
    MADB_DynstrAppend(&StmtStr, " AND A.REFERENCED_TABLE_NAME = '");

    mysql_real_escape_string(Stmt->Connection->mariadb, EscapeBuf, PKTableName, MIN(255, NameLength3));
    MADB_DynstrAppend(&StmtStr, EscapeBuf);
    MADB_DynstrAppend(&StmtStr, "' ");
  }

  if (FKTableName && FKTableName[0])
  {
    MADB_DynstrAppend(&StmtStr, " AND A.TABLE_SCHEMA = "); 

    if (FKCatalogName && FKCatalogName[0])
    {
      MADB_DynstrAppend(&StmtStr, "'");
      mysql_real_escape_string(Stmt->Connection->mariadb, EscapeBuf, FKCatalogName, MIN(NameLength4, 255));
      MADB_DynstrAppend(&StmtStr, EscapeBuf);
      MADB_DynstrAppend(&StmtStr, "' ");
    }
    else
      MADB_DynstrAppend(&StmtStr, "DATABASE() ");
    MADB_DynstrAppend(&StmtStr, " AND A.TABLE_NAME = '");

    mysql_real_escape_string(Stmt->Connection->mariadb, EscapeBuf, FKTableName, MIN(255, NameLength6));
    MADB_DynstrAppend(&StmtStr, EscapeBuf);
    MADB_DynstrAppend(&StmtStr, "' ");
  }
  MADB_DynstrAppend(&StmtStr, "ORDER BY FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, KEY_SEQ, PKTABLE_NAME");
  
  ret= Stmt->Methods->ExecDirect(Stmt, StmtStr.str, SQL_NTS);

  MADB_DynstrFree(&StmtStr);

  return ret;
}
/* }}} */

/* {{{ MADB_StmtDescribeCol */
SQLRETURN MADB_StmtDescribeCol(MADB_Stmt *Stmt, SQLUSMALLINT ColumnNumber, void *ColumnName,
                         SQLSMALLINT BufferLength, SQLSMALLINT *NameLengthPtr,
                         SQLSMALLINT *DataTypePtr, SQLULEN *ColumnSizePtr, SQLSMALLINT *DecimalDigitsPtr,
                         SQLSMALLINT *NullablePtr, my_bool isWChar)
{
  MADB_DescRecord *Record;

  MADB_CLEAR_ERROR(&Stmt->Error);

  if (!mysql_stmt_field_count(Stmt->stmt))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07005, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (ColumnNumber < 1 || ColumnNumber > mysql_stmt_field_count(Stmt->stmt))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_07009, NULL, 0);
    return SQL_ERROR;
  }
  if (!(Record= MADB_DescGetInternalRecord(Stmt->Ird, ColumnNumber - 1, MADB_DESC_WRITE)))
  {
    MADB_CopyError(&Stmt->Error, &Stmt->Ird->Error);
    return Stmt->Error.ReturnValue;
  }
  if (NameLengthPtr)
    *NameLengthPtr= 0;

  /* Don't map types if ansi mode was set */
  if (DataTypePtr)
      *DataTypePtr= (isWChar && !Stmt->Connection->IsAnsi) ? MADB_GetWCharType(Record->ConciseType) : Record->ConciseType;
  /* Columnsize in characters, not bytes! */
  if (ColumnSizePtr)
    *ColumnSizePtr= Record->Length;
     //Record->Precision ? MIN(Record->DisplaySize, Record->Precision) : Record->DisplaySize;
  if (DecimalDigitsPtr)
    *DecimalDigitsPtr= Record->Scale;
  if (NullablePtr)
    *NullablePtr= Record->Nullable;

  if ((ColumnName || BufferLength) && Record->ColumnName)
  {
    size_t Length= MADB_SetString(isWChar ? &Stmt->Connection->Charset : 0, ColumnName, ColumnName ? BufferLength : 0, Record->ColumnName, SQL_NTS, &Stmt->Error); 
    if (NameLengthPtr)
      *NameLengthPtr= (SQLSMALLINT)Length;
    if (!BufferLength)
      MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);
  }
  return Stmt->Error.ReturnValue;
}
/* }}} */

/* {{{ MADB_SetCursorName */
SQLRETURN MADB_SetCursorName(MADB_Stmt *Stmt, char *Buffer, SQLINTEGER BufferLength)
{
  MADB_List *LStmt, *LStmtNext;
  if (!Buffer)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY009, NULL, 0);
    return SQL_ERROR;
  }
  ADJUST_LENGTH(Buffer, BufferLength);
  if (BufferLength < 0)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY090, NULL, 0);
    return SQL_ERROR;
  }
  if (BufferLength == 0)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_34000, "Empty cursor name is not allowed.", 0);
    return SQL_ERROR;
  }
  if (isspace((int)Buffer[0]) || isspace((int)Buffer[BufferLength - 1]))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_34000, "Cursor name with leading or trailing spaces is not allowed.", 0);
    return SQL_ERROR;
  }
  if ((BufferLength > 5 && _strnicmp(Buffer, "SQLCUR", 6) == 0) ||
      (BufferLength > 6 && _strnicmp(Buffer, "SQL_CUR", 7) == 0))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_34000, NULL, 0);
    return SQL_ERROR;
  }
  /* check if cursor name length is valid */
  if (BufferLength > MADB_MAX_CURSOR_NAME) {
    char error_msg[64];
    sprintf(error_msg, "Cursor name exceeded maximal allowed length (%d).", MADB_MAX_CURSOR_NAME);
    MADB_SetError(&Stmt->Error, MADB_ERR_34000, error_msg, 0);
    return SQL_ERROR;
  }

  /* check if cursor name is unique */
  for (LStmt= Stmt->Connection->Stmts; LStmt; LStmt= LStmtNext)
  {
    MADB_Cursor *Cursor= &((MADB_Stmt *)LStmt->data)->Cursor;
    LStmtNext= LStmt->next;

    if (Stmt != (MADB_Stmt *)LStmt->data &&
        Cursor->Name && strlen(Cursor->Name) == BufferLength &&
        _strnicmp(Cursor->Name, Buffer, BufferLength) == 0)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_3C000, NULL, 0);
      return SQL_ERROR;
    }
  }
  MADB_FREE(Stmt->Cursor.Name);
  Stmt->Cursor.Name= MADB_CALLOC(BufferLength + 1);
  MADB_SetString(0, Stmt->Cursor.Name, BufferLength + 1, Buffer, BufferLength, NULL);
  return SQL_SUCCESS;
}
/* }}} */

/* {{{ MADB_GetCursorName */
SQLRETURN MADB_GetCursorName(MADB_Stmt *Stmt, void *CursorName, SQLSMALLINT BufferLength, 
                             SQLSMALLINT *NameLengthPtr, my_bool isWChar)
{
  SQLSMALLINT Length;
  MADB_CLEAR_ERROR(&Stmt->Error);

  if (BufferLength < 0)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY090, NULL, 0);
    return Stmt->Error.ReturnValue;
  }
  if (!Stmt->Cursor.Name)
  {
    Stmt->Cursor.Name= (char *)MADB_CALLOC(MADB_MAX_CURSOR_NAME);
    _snprintf(Stmt->Cursor.Name, MADB_MAX_CURSOR_NAME, "SQL_CUR%d", 
                Stmt->Connection->CursorCount++);
  }
  Length= (SQLSMALLINT)MADB_SetString(isWChar ? &Stmt->Connection->Charset : 0, CursorName,
                                      BufferLength, Stmt->Cursor.Name, SQL_NTS, &Stmt->Error);
  if (NameLengthPtr)
    *NameLengthPtr= (SQLSMALLINT)Length;
  if (!BufferLength)
    MADB_SetError(&Stmt->Error, MADB_ERR_01004, NULL, 0);
   
  return Stmt->Error.ReturnValue;
  
}
/* }}} */

/* {{{ MADB_RefreshRowPtrs */
SQLRETURN MADB_RefreshRowPtrs(MADB_Stmt *Stmt)
{
  return MoveNext(Stmt, 1LL);
}

/* {{{ MADB_RefreshDynamicCursor */
SQLRETURN MADB_RefreshDynamicCursor(MADB_Stmt *Stmt)
{
  SQLRETURN ret;
  SQLLEN    CurrentRow=     Stmt->Cursor.Position;
  long long AffectedRows=   Stmt->AffectedRows;
  SQLLEN    LastRowFetched= Stmt->LastRowFetched;

  ret= Stmt->Methods->Execute(Stmt, FALSE);

  Stmt->Cursor.Position= CurrentRow;
  if (Stmt->Cursor.Position > 0 && (my_ulonglong)Stmt->Cursor.Position >= mysql_stmt_num_rows(Stmt->stmt))
  {
    Stmt->Cursor.Position= (long)mysql_stmt_num_rows(Stmt->stmt) - 1;
  }

  Stmt->LastRowFetched= LastRowFetched;
  Stmt->AffectedRows=   AffectedRows;

  if (Stmt->Cursor.Position < 0)
  {
    Stmt->Cursor.Position= 0;
  }
  return ret;
}
/* }}} */

/* Couple of macsros for this function specifically */
#define MADB_SETPOS_FIRSTROW(agg_result) (agg_result == SQL_INVALID_HANDLE)
#define MADB_SETPOS_AGG_RESULT(agg_result, row_result) if (MADB_SETPOS_FIRSTROW(agg_result)) agg_result= row_result; \
    else if (row_result != agg_result) agg_result= SQL_SUCCESS_WITH_INFO

/* {{{ MADB_CspsFreeDAE
This clean up routine should be called when the client resets the DAE parameters by explicitly unbinding the parameters
via SQLFreeStmt. */
void MADB_CspsFreeDAE(MADB_Stmt *Stmt)
{
    int column;
    for (column = 0; column < Stmt->Ipd->Records.elements; ++column)
    {
        // It's not guaranteed that DataPtr is not NULL when this function is called, since DataPtr is unused for Ipd
        // and we use it only for SQLPutData out of mere convenience and to avoid messing around with Apd.
        // Doing free() on a NULL ptr is a no-op so we're safe here.
        MADB_DescRecord *IpdRec = ((MADB_DescRecord *)Stmt->Ipd->Records.buffer) + column;
        MADB_FREE(IpdRec->DataPtr);
        IpdRec->DataPtr = NULL;
        IpdRec->OctetLength = IpdRec->InternalLength = 0;
    }
}
/* }}} */

/* {{{ MADB_SetPos */
SQLRETURN MADB_StmtSetPos(MADB_Stmt *Stmt, SQLSETPOSIROW RowNumber, SQLUSMALLINT Operation,
                      SQLUSMALLINT LockType, int ArrayOffset)
{
  if (!Stmt->result && !Stmt->stmt->fields)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_24000, NULL, 0);
    return Stmt->Error.ReturnValue;
  }


  // When we don't load all result we can't set the cursor position
  //
  if (NO_CACHE(Stmt))
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY109, "SQL_FORWARD_ONLY cursor is used with NO_CACHE option. "
                                                "Cursor with this options can't be positioned within the rowset. "
                                                "Use other cursor type or set NO_CACHE connection option to 0 to set the cursor position.", 0);
    return Stmt->Error.ReturnValue;
  }

  if (LockType != SQL_LOCK_NO_CHANGE)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, NULL, 0);
    return Stmt->Error.ReturnValue;
  }
  switch(Operation) {
  case SQL_POSITION:
    {
      if (RowNumber < 1 || RowNumber > mysql_stmt_num_rows(Stmt->stmt))
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_HY109, NULL, 0);
        return Stmt->Error.ReturnValue;
      }
      if (Stmt->Options.CursorType == SQL_CURSOR_DYNAMIC)
        if (!SQL_SUCCEEDED(Stmt->Methods->RefreshDynamicCursor(Stmt)))
          return Stmt->Error.ReturnValue;
      EnterCriticalSection(&Stmt->Connection->cs);
      Stmt->Cursor.Position+=(RowNumber - 1);
      MADB_StmtDataSeek(Stmt, Stmt->Cursor.Position);
      LeaveCriticalSection(&Stmt->Connection->cs);
    }
    break;
  case SQL_ADD:
    {
      MADB_DynString DynStmt;
      SQLRETURN      ret;
      char          *TableName=   MADB_GetTableName(Stmt);
      char          *CatalogName= MADB_GetCatalogName(Stmt);
      int            column, param= 0;

      if (Stmt->Options.CursorType == SQL_CURSOR_DYNAMIC)
        if (!SQL_SUCCEEDED(Stmt->Methods->RefreshDynamicCursor(Stmt)))
          return Stmt->Error.ReturnValue;

      Stmt->DaeRowNumber= RowNumber;

      if (Stmt->DataExecutionType != MADB_DAE_ADD)
      {
        Stmt->Methods->StmtFree(Stmt->DaeStmt, SQL_DROP);
        MA_SQLAllocHandle(SQL_HANDLE_STMT, Stmt->Connection, (SQLHANDLE *)&Stmt->DaeStmt);

        if (MADB_InitDynamicString(&DynStmt, "INSERT INTO ", 8192, 1024) ||
            MADB_DynStrAppendQuoted(&DynStmt, CatalogName) ||
            MADB_DynstrAppend(&DynStmt, ".") ||
            MADB_DynStrAppendQuoted(&DynStmt, TableName)||
            MADB_DynStrInsertSet(Stmt, &DynStmt))
        {
          MADB_DynstrFree(&DynStmt);
          return Stmt->Error.ReturnValue;
        }

        ResetMetadata(&Stmt->DaeStmt->DefaultsResult, MADB_GetDefaultColumnValues(Stmt, Stmt->stmt->fields));

        Stmt->DataExecutionType= MADB_DAE_ADD;
        ret= Stmt->Methods->Prepare(Stmt->DaeStmt, DynStmt.str, SQL_NTS, FALSE);

        MADB_DynstrFree(&DynStmt);

        if (!SQL_SUCCEEDED(ret))
        {
          MADB_CopyError(&Stmt->Error, &Stmt->DaeStmt->Error);
          Stmt->Methods->StmtFree(Stmt->DaeStmt, SQL_DROP);
          return Stmt->Error.ReturnValue;
        }
      }
      
      /* Bind parameters - DaeStmt will process whole array of values, thus we don't need to iterate through the array*/
      for (column= 0; column < MADB_STMT_COLUMN_COUNT(Stmt); ++column)
      {
        MADB_DescRecord *Rec=          MADB_DescGetInternalRecord(Stmt->Ard, column, MADB_DESC_READ),
                        *ApdRec=       NULL;

        if (Rec->inUse && MADB_ColumnIgnoredInAllRows(Stmt->Ard, Rec) == FALSE)
        {
          SQLULEN ColumnSize;
          switch (Rec->Type)
          {
            case SQL_BINARY:
            case SQL_VARBINARY:
            case SQL_LONGVARBINARY:
            case SQL_CHAR:
            case SQL_VARCHAR:
            case SQL_LONGVARCHAR:
            case SQL_WCHAR:
            case SQL_WLONGVARCHAR:
            case SQL_WVARCHAR:
              ColumnSize = Rec->DescLength;
              break;
            case SQL_FLOAT:
            case SQL_REAL:
            case SQL_DOUBLE:
            case SQL_DECIMAL:
            case SQL_NUMERIC:
              ColumnSize = Rec->Precision;
              break;
          }
          Stmt->DaeStmt->Methods->BindParam(Stmt->DaeStmt, param + 1, SQL_PARAM_INPUT, Rec->ConciseType, Rec->Type,
                                            ColumnSize, Rec->Scale, Rec->DataPtr, Rec->OctetLength, Rec->OctetLengthPtr);
        }
        else
        {
          /*Stmt->DaeStmt->Methods->BindParam(Stmt->DaeStmt, param + 1, SQL_PARAM_INPUT, SQL_CHAR, SQL_C_CHAR, 0, 0,
                            ApdRec->DefaultValue, strlen(ApdRec->DefaultValue), NULL);*/
          continue;
        }
        
        ApdRec= MADB_DescGetInternalRecord(Stmt->DaeStmt->Apd, param, MADB_DESC_READ);
        ApdRec->DefaultValue= MADB_GetDefaultColumnValue(Stmt->DaeStmt->DefaultsResult,
          Stmt->stmt->fields[column].org_name);

        ++param;
      }

      memcpy(&Stmt->DaeStmt->Apd->Header, &Stmt->Ard->Header, sizeof(MADB_Header));
      ret= Stmt->Methods->Execute(Stmt->DaeStmt, FALSE);

      if (!SQL_SUCCEEDED(ret))
      {
        /* We can have SQL_NEED_DATA here, which would not set error (and its ReturnValue) */
        MADB_CopyError(&Stmt->Error, &Stmt->DaeStmt->Error);
        return ret;
      }
      if (Stmt->AffectedRows == -1)
      {
        Stmt->AffectedRows= 0;
      }
      Stmt->AffectedRows+= Stmt->DaeStmt->AffectedRows;

      Stmt->DataExecutionType= MADB_DAE_NORMAL;
      Stmt->Methods->StmtFree(Stmt->DaeStmt, SQL_DROP);
      Stmt->DaeStmt= NULL;
    }
    break;
  case SQL_DELETE:
    {
      MADB_DynString DynamicStmt;
      SQLULEN        SaveArraySize= Stmt->Ard->Header.ArraySize;
      my_ulonglong   Start=         0,
                     End=           mysql_stmt_num_rows(Stmt->stmt);
      char           *TableName=    MADB_GetTableName(Stmt);

      if (!TableName)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_IM001, "Updatable Cursors with multiple tables are not supported", 0);
        return Stmt->Error.ReturnValue;
      }

      Stmt->Ard->Header.ArraySize= 1;
      if (Stmt->Options.CursorType == SQL_CURSOR_DYNAMIC)
        if (!SQL_SUCCEEDED(Stmt->Methods->RefreshDynamicCursor(Stmt)))
          return Stmt->Error.ReturnValue;
      Stmt->AffectedRows= 0;
      if (RowNumber < 0 || RowNumber > End)
      {
        MADB_SetError(&Stmt->Error, MADB_ERR_HY109, NULL, 0);
        return Stmt->Error.ReturnValue;
      }
      Start= (RowNumber) ? Stmt->Cursor.Position + RowNumber - 1 : Stmt->Cursor.Position;
      if (SaveArraySize && !RowNumber)
        End= MIN(End, Start + SaveArraySize - 1);
      else
        End= Start;

      while (Start <= End)
      {
        MADB_StmtDataSeek(Stmt, Start);
        Stmt->Methods->RefreshRowPtrs(Stmt);
        MADB_InitDynamicString(&DynamicStmt, "DELETE FROM ", 8192, 1024);
        if (MADB_DynStrAppendQuoted(&DynamicStmt, TableName) ||
           MADB_DynStrGetWhere(Stmt, &DynamicStmt, TableName, FALSE))
        {
          MADB_DynstrFree(&DynamicStmt);
          MADB_SetError(&Stmt->Error, MADB_ERR_HY001, NULL, 0);

          return Stmt->Error.ReturnValue;
        }

        LOCK_MARIADB(Stmt->Connection);
        if (mysql_real_query(Stmt->Connection->mariadb, DynamicStmt.str, (unsigned long)DynamicStmt.length))
        {
          MADB_DynstrFree(&DynamicStmt);
          MADB_SetError(&Stmt->Error, MADB_ERR_HY001, mysql_error(Stmt->Connection->mariadb), 
                            mysql_errno(Stmt->Connection->mariadb));

          UNLOCK_MARIADB(Stmt->Connection);

          return Stmt->Error.ReturnValue;
        }
        MADB_DynstrFree(&DynamicStmt);
        Stmt->AffectedRows+= mysql_affected_rows(Stmt->Connection->mariadb);
        Start++;
      }
      UNLOCK_MARIADB(Stmt->Connection);

      Stmt->Ard->Header.ArraySize= SaveArraySize;
      /* if we have a dynamic cursor we need to adjust the rowset size */
      if (Stmt->Options.CursorType == SQL_CURSOR_DYNAMIC)
      {
        Stmt->LastRowFetched-= (unsigned long)Stmt->AffectedRows;
      }
    }
    break;
  default:
    MADB_SetError(&Stmt->Error, MADB_ERR_HYC00, "Operation is not supported", 0);
    return Stmt->Error.ReturnValue;
  }
  return SQL_SUCCESS;
}
/* }}} */
#undef MADB_SETPOS_FIRSTROW
#undef MADB_SETPOS_AGG_RESULT

/* {{{ MADB_StmtFetchScroll */
SQLRETURN MADB_StmtFetchScroll(MADB_Stmt *Stmt, SQLSMALLINT FetchOrientation,
                               SQLLEN FetchOffset)
{
  SQLRETURN ret= SQL_SUCCESS;
  SQLLEN    Position;
  SQLLEN    RowsProcessed;

  RowsProcessed= Stmt->LastRowFetched;
  
  if (Stmt->Options.CursorType == SQL_CURSOR_FORWARD_ONLY &&
      FetchOrientation != SQL_FETCH_NEXT)
  {
    MADB_SetError(&Stmt->Error, MADB_ERR_HY106, NULL, 0);
    return Stmt->Error.ReturnValue;
  }

  if (Stmt->Options.CursorType == SQL_CURSOR_DYNAMIC)
  {
    SQLRETURN rc;
    rc= Stmt->Methods->RefreshDynamicCursor(Stmt);
    if (!SQL_SUCCEEDED(rc))
    {
      return Stmt->Error.ReturnValue;
    }
  }

  if (FetchOrientation != SQL_FETCH_NEXT)
  {
    MADB_STMT_FORGET_NEXT_POS(Stmt);
  }

  switch(FetchOrientation) {
  case SQL_FETCH_NEXT:
    Position= Stmt->Cursor.Position < 0 ? 0 : Stmt->Cursor.Position + RowsProcessed;
    break;
  case SQL_FETCH_PRIOR:
    Position= Stmt->Cursor.Position < 0 ? - 1: Stmt->Cursor.Position - MAX(1, Stmt->Ard->Header.ArraySize);
    break;
  case SQL_FETCH_RELATIVE:
    Position= Stmt->Cursor.Position + FetchOffset;
    if (Position < 0 && Stmt->Cursor.Position > 0 &&
        -FetchOffset <= (SQLINTEGER)Stmt->Ard->Header.ArraySize)
      Position= 0;
    break;
  case SQL_FETCH_ABSOLUTE:
    if (FetchOffset < 0)
    {
      if ((long long)mysql_stmt_num_rows(Stmt->stmt) - 1 + FetchOffset < 0 &&
          ((SQLULEN)-FetchOffset <= Stmt->Ard->Header.ArraySize))
        Position= 0;
      else
        Position= (SQLLEN)mysql_stmt_num_rows(Stmt->stmt) + FetchOffset;
    }
    else
      Position= FetchOffset - 1;
    break;
  case SQL_FETCH_FIRST:
    Position= 0;
    break;
  case SQL_FETCH_LAST:
    Position= (SQLLEN)mysql_stmt_num_rows(Stmt->stmt) - MAX(1, Stmt->Ard->Header.ArraySize);
 /*   if (Stmt->Ard->Header.ArraySize > 1)
      Position= MAX(0, Position - Stmt->Ard->Header.ArraySize + 1); */
    break;
  case SQL_FETCH_BOOKMARK:
    if (Stmt->Options.UseBookmarks == SQL_UB_OFF)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY106, NULL, 0);
      return Stmt->Error.ReturnValue;
    }
    if (!Stmt->Options.BookmarkPtr)
    {
      MADB_SetError(&Stmt->Error, MADB_ERR_HY111, NULL, 0);
      return Stmt->Error.ReturnValue;
    }

    Position= *((long *)Stmt->Options.BookmarkPtr);
    if (Stmt->Connection->Environment->OdbcVersion >= SQL_OV_ODBC3)
      Position+= FetchOffset;
   break;
  default:
    MADB_SetError(&Stmt->Error, MADB_ERR_HY106, NULL, 0);
    return Stmt->Error.ReturnValue;
    break;
  }

  if (Position < 0)
  {
    MADB_STMT_RESET_CURSOR(Stmt);
  }
  else if (!NO_CACHE(Stmt))
  // If we don't load all the result set
  // mysql_stmt_num_rows returns incorrect number of rows
  //
  {
    Stmt->Cursor.Position= (SQLLEN)MIN((my_ulonglong)Position, mysql_stmt_num_rows(Stmt->stmt));
  }

  if (Position < 0 || (!NO_CACHE(Stmt) && (my_ulonglong)Position > mysql_stmt_num_rows(Stmt->stmt) - 1))
  {
    /* We need to put cursor before RS start, not only return error */
    if (Position < 0)
    {
      MADB_StmtDataSeek(Stmt, 0);
    }
    return SQL_NO_DATA;
  }

  /* For dynamic cursor we "refresh" resultset eachtime(basically re-executing), and thus the (c/c)cursor is before 1st row at this point,
     and thux we need to restore the last position. For array fetch with not forward_only cursor, the (c/c)cursor is at 1st row of the last
     fetched rowset */
  if (FetchOrientation != SQL_FETCH_NEXT || (RowsProcessed > 1 && Stmt->Options.CursorType != SQL_CURSOR_FORWARD_ONLY) ||
      Stmt->Options.CursorType == SQL_CURSOR_DYNAMIC)
  {
    if (Stmt->Cursor.Next != NULL)
    {
      mysql_stmt_row_seek(Stmt->stmt, Stmt->Cursor.Next);
      ret= SQL_SUCCESS;
    }
    else
    {
      ret= MADB_StmtDataSeek(Stmt, Stmt->Cursor.Position);
    }
  }
  
  /* Assuming, that ret before previous "if" was SQL_SUCCESS */
  if (ret == SQL_SUCCESS)
  {
    ret= Stmt->Methods->Fetch(Stmt);
  }
  if (ret == SQL_NO_DATA_FOUND && Stmt->LastRowFetched > 0)
  {
    ret= SQL_SUCCESS;
  }
  return ret;
}

struct st_ma_stmt_methods MADB_StmtMethods=
{
  MADB_StmtPrepare,
  MADB_StmtExecute,
  MADB_StmtFetch,
  MADB_StmtBindCol,
  MADB_StmtBindParam,
  MADB_StmtExecDirect,
  MADB_StmtGetData,
  MADB_StmtRowCount,
  MADB_StmtParamCount,
  MADB_StmtColumnCount,
  MADB_StmtGetStmtAttr,
  MADB_StmtSetStmtAttr,
  MADB_StmtFree,
  MADB_StmtColAttribute,
  MADB_StmtColumnPrivileges,
  MADB_StmtTablePrivileges,
  MADB_StmtTables,
  MADB_StmtStatistics,
  // MADB_StmtColumns, TODO: PLAT-5892: delete(?) comment and function when MADB_StmtColumnsNoInfoSchema is well tested
  MADB_StmtColumnsNoInfoSchema,
  MADB_StmtProcedureColumns,
  // MADB_StmtPrimaryKeys,
  MADB_StmtPrimaryKeysNoInfoSchema,
  MADB_StmtSpecialColumns,
  MADB_StmtProcedures,
  MADB_StmtForeignKeys,
  MADB_StmtDescribeCol,
  MADB_SetCursorName,
  MADB_GetCursorName,
  MADB_StmtSetPos,
  MADB_StmtFetchScroll,
  MADB_StmtParamData,
  MADB_StmtPutData,
  MADB_StmtBulkOperations,
  MADB_RefreshDynamicCursor,
  MADB_RefreshRowPtrs,
  MADB_GetOutParams
};