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path: root/db/post_migrate/20170526185842_migrate_pipeline_stages.rb
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class MigratePipelineStages < ActiveRecord::Migration
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    disable_statement_timeout

    execute <<-SQL.strip_heredoc
      INSERT INTO ci_stages (project_id, pipeline_id, name)
        SELECT project_id, commit_id, stage FROM ci_builds
          WHERE stage IS NOT NULL
          AND stage_id IS NULL
          AND EXISTS (SELECT 1 FROM projects WHERE projects.id = ci_builds.project_id)
          AND EXISTS (SELECT 1 FROM ci_pipelines WHERE ci_pipelines.id = ci_builds.commit_id)
          GROUP BY project_id, commit_id, stage
          ORDER BY MAX(stage_idx)
    SQL
  end
end