discourse/db/migrate/20170330041605_add_index_to_topic_status_updates.rb
Sam Saffron 30990006a9 DEV: enable frozen string literal on all files
This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.

Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
2019-05-13 09:31:32 +08:00

16 lines
362 B
Ruby

# frozen_string_literal: true
class AddIndexToTopicStatusUpdates < ActiveRecord::Migration[4.2]
def up
execute <<~SQL
CREATE UNIQUE INDEX idx_topic_id_status_type_deleted_at
ON topic_status_updates(topic_id, status_type)
WHERE deleted_at IS NULL
SQL
end
def down
execute "DROP INDEX idx_topic_id_status_type_deleted_at"
end
end