Re: Two sequences associated with one identity column

On 10/29/25 06:40, Colin 't Hart wrote:
> As expected the dump contains:
>
> CREATE TABLE <schema>.<tablename> (
> <other columns>,
> id bigint NOT NULL
> );
>
> <snip>
>
> --
> -- Name: <sequence1>; Type: SEQUENCE; Schema: <schema>; Owner: <owner>
> --
>
> ALTER TABLE <schema>.<tablename> ALTER COLUMN id ADD GENERATED ALWAYS
> AS IDENTITY (
> SEQUENCE NAME <schema>.<sequence1>
> START WITH 1
> INCREMENT BY 1
> NO MINVALUE
> NO MAXVALUE
> CACHE 1
> );
>
>
> --
> -- Name: <sequence2>; Type: SEQUENCE; Schema: <schema>; Owner: <owner>
> --
>
> ALTER TABLE <schema>.<tablename> ALTER COLUMN id ADD GENERATED ALWAYS
> AS IDENTITY (
> SEQUENCE NAME <schema>.<sequence2>
> START WITH 1
> INCREMENT BY 1
> NO MINVALUE
> NO MAXVALUE
> CACHE 1
> );

Just a wild guess. Assuming <schema> is the same, what is the output of:

SELECT
relname,
relnamespace,
relpersistence
FROM
pg_class
WHERE
relname IN ('<sequence1>', '<sequence2> ')
AND relnamespace = '<schema>'::regnamespace;

>

> /Colin
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com