From: | Ron <ronljohnsonjr(at)gmail(dot)com> |
---|---|
To: | pgsql-general(at)lists(dot)postgresql(dot)org |
Subject: | Re: Switching identity column to serial |
Date: | 2023-02-04 04:41:06 |
Message-ID: | 0400e92f-0d77-4276-be50-6e16321f4ae0@gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
On 2/3/23 18:54, Erik Wienhold wrote:
> I was wondering if it's possible to drop a column identity (not the column
> itself) while keeping the attached sequence. This would avoid recreating
> an identical sequence (especially with a correct start value and owner).
Why doesn't this work?
BEGIN;
DROP SEQUENCE t_id;
CREATE SEQUENCE new_t_id_seq AS INTEGER OWNED BY t.id;
ALTER SEQUENCE new_t_id_seq OWNER TO new_owner;
SELECT setval('new_t_id', (SELECT MAX(id) FROM t));
SELECT nextval('new_t_id');
COMMIT;
> Changing the sequence owner to NONE before dropping identity is not allowed.
> Also changing pg_class.relowner to some role did not help. The sequence is
> still dropped together with the column identity.
Manually diigging around the system catalog is /never/ recommended.
--
Born in Arizona, moved to Babylonia.
From | Date | Subject | |
---|---|---|---|
Next Message | Ron | 2023-02-04 04:42:05 | Re: Switching identity column to serial |
Previous Message | Erik Wienhold | 2023-02-04 01:05:02 | Re: Switching identity column to serial |