text: ALTER TYPE public.job_type RENAME TO _job_type; 
  CREATE TYPE public.job_type AS ENUM (
      'EXPERIMENT',
      'NOTEBOOK',
      'SHELL',
      'COMMAND',
      'TENSORBOARD', 
      'CHECKPOINT_GC'
  );
  ALTER TABLE public.jobs ALTER COLUMN job_type TYPE public.job_type USING (job_type::text::job_type);
  DROP TYPE _job_type;
  