gitlab-org--gitlab-foss/db/migrate/20160920160832_add_index_to_labels_title.rb

# rubocop:disable RemoveIndex
class AddIndexToLabelsTitle < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    add_concurrent_index :labels, :title
  end

  def down
    remove_index :labels, :title if index_exists? :labels, :title
  end
end
Add remove_concurrent_index to database helper 2017-04-05 18:53:57 -04:00			`# rubocop:disable RemoveIndex`
Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 02:27:31 -05:00			`class AddIndexToLabelsTitle < ActiveRecord::Migration[4.2]`
Add index on labels title 2016-09-20 12:32:51 -04:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = false`

			`disable_ddl_transaction!`

Add cop to ensure reversibility of add_concurrent_index 2017-03-07 11:08:53 -05:00			`def up`
Add index on labels title 2016-09-20 12:32:51 -04:00			`add_concurrent_index :labels, :title`
			`end`
Add cop to ensure reversibility of add_concurrent_index 2017-03-07 11:08:53 -05:00
			`def down`
			`remove_index :labels, :title if index_exists? :labels, :title`
			`end`
Add index on labels title 2016-09-20 12:32:51 -04:00			`end`