db/migrate/20160715134306_add_index_for_pipeline_user_id.rb


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class AddIndexForPipelineUserId < ActiveRecord::Migration
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    add_concurrent_index :ci_commits, :user_id
  end

  def down
    remove_index :ci_commits, :user_id if index_exists? :ci_commits, :user_id
  end
end