gitlab-org--gitlab-foss/db/migrate/20150817163600_deduplicate_user_identities.rb
Sean McGivern 98bb435f42 Enable RuboCop for migrations
Migrations shouldn't fail RuboCop checks - especially lint checks, such
as the nested method check. To avoid changing code in existing
migrations, add the magic comment to the top of each of them to skip
that file.
2016-06-09 16:05:25 +01:00

15 lines
708 B
Ruby

# rubocop:disable all
class DeduplicateUserIdentities < ActiveRecord::Migration
def change
execute 'DROP TABLE IF EXISTS tt_migration_DeduplicateUserIdentities;'
execute 'CREATE TABLE tt_migration_DeduplicateUserIdentities AS SELECT id,provider,user_id FROM identities;'
execute 'DELETE FROM identities WHERE id NOT IN ( SELECT MIN(id) FROM tt_migration_DeduplicateUserIdentities GROUP BY user_id, provider);'
execute 'DROP TABLE IF EXISTS tt_migration_DeduplicateUserIdentities;'
end
def down
# This is an irreversible migration;
# If someone is trying to rollback for other reasons, we should not throw an Exception.
# raise ActiveRecord::IrreversibleMigration
end
end