diff options
Diffstat (limited to 'db/post_migrate/20211202145237_add_todos_project_and_id_index.rb')
-rw-r--r-- | db/post_migrate/20211202145237_add_todos_project_and_id_index.rb | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/db/post_migrate/20211202145237_add_todos_project_and_id_index.rb b/db/post_migrate/20211202145237_add_todos_project_and_id_index.rb new file mode 100644 index 00000000000..69f7822c057 --- /dev/null +++ b/db/post_migrate/20211202145237_add_todos_project_and_id_index.rb @@ -0,0 +1,32 @@ +# 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 AddTodosProjectAndIdIndex < Gitlab::Database::Migration[1.0] + # 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! + + NEW_INDEX_NAME = 'index_todos_on_project_id_and_id' + OLD_INDEX_NAME = 'index_todos_on_project_id' + + def up + add_concurrent_index :todos, [:project_id, :id], name: NEW_INDEX_NAME + remove_concurrent_index_by_name :todos, OLD_INDEX_NAME + end + + def down + add_concurrent_index :todos, :project_id, name: OLD_INDEX_NAME + remove_concurrent_index_by_name :todos, NEW_INDEX_NAME + end +end |