20170619144837_add_index_for_head_pipeline_merge_request.rb 380 Bytes
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class AddIndexForHeadPipelineMergeRequest < ActiveRecord::Migration[4.2]
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  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    add_concurrent_index :merge_requests, :head_pipeline_id
  end

  def down
    remove_concurrent_index :merge_requests, :head_pipeline_id if index_exists?(:merge_requests, :head_pipeline_id)
  end
end