gitlab-org--gitlab-foss/db/migrate/20160616103948_add_unique_i...

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

  disable_ddl_transaction!

  def up
    add_concurrent_index :keys, :fingerprint, unique: true
  end

  def down
    remove_index :keys, :fingerprint
  end
end
Add remove_concurrent_index to database helper 2017-04-05 22:53:57 +00:00			`# 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 07:27:31 +00:00			`class AddUniqueIndexToKeysFingerprint < ActiveRecord::Migration[4.2]`
Remove Duplicated keys add UNIQUE index to fingerprint 2016-06-16 10:53:32 +00:00			`include Gitlab::Database::MigrationHelpers`

			`disable_ddl_transaction!`

			`def up`
			`add_concurrent_index :keys, :fingerprint, unique: true`
			`end`

			`def down`
			`remove_index :keys, :fingerprint`
			`end`
			`end`