gitlab-org--gitlab-foss/db/migrate/20170130204620_add_index_to...

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

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    unless index_exists?(:project_authorizations, :project_id)
      add_concurrent_index(:project_authorizations, :project_id)
    end
  end

  def down
    remove_index(:project_authorizations, :project_id) if
      Gitlab::Database.postgresql?
  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 AddIndexToProjectAuthorizations < ActiveRecord::Migration[4.2]`
Add project ID index to `project_authorizations` table to optimize queries As described in #27443, the `project_authorizations` table is often used to retrieve all team members of this project. This can lead to a number of slow queries impacting load times. This MR adds an index for just `project_id`. Closes #27443 2017-01-30 20:50:47 +00:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = false`

			`disable_ddl_transaction!`

			`def up`
fix project authorizations migration issue 2017-04-05 14:59:28 +00:00			`unless index_exists?(:project_authorizations, :project_id)`
			`add_concurrent_index(:project_authorizations, :project_id)`
			`end`
Add project ID index to `project_authorizations` table to optimize queries As described in #27443, the `project_authorizations` table is often used to retrieve all team members of this project. This can lead to a number of slow queries impacting load times. This MR adds an index for just `project_id`. Closes #27443 2017-01-30 20:50:47 +00:00			`end`
Fix for postgresql 2017-03-14 06:36:33 +00:00
			`def down`
Drop the index only for postgresql, because mysql cannot simply drop the index without dropping the corresponding foreign key, and we certainly don't want to drop the foreign key here. 2017-03-14 12:03:22 +00:00			`remove_index(:project_authorizations, :project_id) if`
			`Gitlab::Database.postgresql?`
Fix for postgresql 2017-03-14 06:36:33 +00:00			`end`
Add project ID index to `project_authorizations` table to optimize queries As described in #27443, the `project_authorizations` table is often used to retrieve all team members of this project. This can lead to a number of slow queries impacting load times. This MR adds an index for just `project_id`. Closes #27443 2017-01-30 20:50:47 +00:00			`end`