db/migrate/20170506085040_add_index_to_pipeline_pipeline_schedule_id.rb


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class AddIndexToPipelinePipelineScheduleId < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    unless index_exists?(:ci_pipelines, :pipeline_schedule_id)
      add_concurrent_index(:ci_pipelines, :pipeline_schedule_id)
    end
  end

  def down
    if index_exists?(:ci_pipelines, :pipeline_schedule_id)
      remove_concurrent_index(:ci_pipelines, :pipeline_schedule_id)
    end
  end
end