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20170526190000_migrate_build_stage_reference_again.rb « post_migrate « db - gitlab.com/gitlab-org/gitlab-foss.git - Unnamed repository; edit this file 'description' to name the repository.
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# rubocop:disable Migration/UpdateLargeTable
class MigrateBuildStageReferenceAgain < ActiveRecord::Migration
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    disable_statement_timeout

    stage_id = Arel.sql <<-SQL.strip_heredoc
      (SELECT id FROM ci_stages
         WHERE ci_stages.pipeline_id = ci_builds.commit_id
           AND ci_stages.name = ci_builds.stage)
    SQL

    update_column_in_batches(:ci_builds, :stage_id, stage_id) do |table, query|
      query.where(table[:stage_id].eq(nil))
    end
  end

  def down
    disable_statement_timeout

    update_column_in_batches(:ci_builds, :stage_id, nil)
  end
end