debian-mirror-gitlab/db/migrate/20211005100112_recreate_loose_fk_insert_function.rb

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2021-11-18 22:05:49 +05:30
# frozen_string_literal: true
class RecreateLooseFkInsertFunction < Gitlab::Database::Migration[1.0]
include Gitlab::Database::MigrationHelpers::LooseForeignKeyHelpers
def up
execute(<<~SQL)
CREATE OR REPLACE FUNCTION #{DELETED_RECORDS_INSERT_FUNCTION_NAME}()
RETURNS TRIGGER AS
$$
BEGIN
INSERT INTO loose_foreign_keys_deleted_records
(partition, fully_qualified_table_name, primary_key_value)
SELECT 1, TG_TABLE_SCHEMA || '.' || TG_TABLE_NAME, old_table.id FROM old_table
ON CONFLICT DO NOTHING;
RETURN NULL;
END
$$ LANGUAGE PLPGSQL
SQL
end
def down
# old function
execute(<<~SQL)
CREATE OR REPLACE FUNCTION #{DELETED_RECORDS_INSERT_FUNCTION_NAME}()
RETURNS TRIGGER AS
$$
BEGIN
INSERT INTO loose_foreign_keys_deleted_records
(deleted_table_name, deleted_table_primary_key_value)
SELECT TG_TABLE_NAME, old_table.id FROM old_table
ON CONFLICT DO NOTHING;
RETURN NULL;
END
$$ LANGUAGE PLPGSQL
SQL
end
end