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i123 Index Bulkrax identifier to speed up query #844

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i123 Index Bulkrax identifier to speed up query #844

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6 changes: 6 additions & 0 deletions db/migrate/20240307194231_add_index_to_metadata_bulkrax_identifier.rb
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
class AddIndexToMetadataBulkraxIdentifier < ActiveRecord::Migration[6.1]
def change
# This creates an expression index on the first element of the bulkrax_identifier array
add_index :orm_resources, "(metadata -> 'bulkrax_identifier' ->> 0)", name: 'index_on_bulkrax_identifier', where: "metadata -> 'bulkrax_identifier' IS NOT NULL"
end
end
3 changes: 2 additions & 1 deletion db/schema.rb
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Expand Up @@ -10,7 +10,7 @@
#
# It's strongly recommended that you check this file into your version control system.

ActiveRecord::Schema.define(version: 2023_08_30_155065) do
ActiveRecord::Schema.define(version: 2024_03_07_194231) do

# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
Expand Down Expand Up @@ -414,6 +414,7 @@
t.datetime "updated_at", null: false
t.string "internal_resource"
t.integer "lock_version"
t.index "(((metadata -> 'bulkrax_identifier'::text) ->> 0))", name: "index_on_bulkrax_identifier", where: "((metadata -> 'bulkrax_identifier'::text) IS NOT NULL)"
t.index ["internal_resource"], name: "index_orm_resources_on_internal_resource"
t.index ["metadata"], name: "index_orm_resources_on_metadata", using: :gin
t.index ["metadata"], name: "index_orm_resources_on_metadata_jsonb_path_ops", opclass: :jsonb_path_ops, using: :gin
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