ALTER TABLE que_jobs
DROP CONSTRAINT que_jobs_pkey, ALTER COLUMN priority TYPE smallint, ADD COLUMN queue TEXT NOT NULL DEFAULT '', ADD CONSTRAINT que_jobs_pkey PRIMARY KEY (queue, priority, run_at, job_id);
ALTER TABLE que_jobs
DROP CONSTRAINT que_jobs_pkey, ALTER COLUMN priority TYPE smallint, ADD COLUMN queue TEXT NOT NULL DEFAULT '', ADD CONSTRAINT que_jobs_pkey PRIMARY KEY (queue, priority, run_at, job_id);