# frozen_string_literal: true # See https://docs.gitlab.com/ee/development/migration_style_guide.html # for more information on how to write migrations for GitLab. class <%= migration_class_name %> < ActiveRecord::Migration[<%= ActiveRecord::Migration.current_version %>] # Uncomment the following include if you require helper functions: # include Gitlab::Database::MigrationHelpers # When using the methods "add_concurrent_index" or "remove_concurrent_index" # you must disable the use of transactions # as these methods can not run in an existing transaction. # When using "add_concurrent_index" or "remove_concurrent_index" methods make sure # that either of them is the _only_ method called in the migration, # any other changes should go in a separate migration. # This ensures that upon failure _only_ the index creation or removing fails # and can be retried or reverted easily. # # To disable transactions uncomment the following line and remove these # comments: # disable_ddl_transaction! def change end end