From: | Alex Balashov <abalashov(at)evaristesys(dot)com> |
---|---|
To: | pgsql-admin(at)lists(dot)postgresql(dot)org |
Subject: | Re: Sequences |
Date: | 2018-12-04 19:17:51 |
Message-ID: | 20181204191751.GL769@tlaquepaque.localdomain |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-admin |
Constructing dynamic SQL is always a bit tricky. Try define this
function:
---
CREATE OR REPLACE FUNCTION seqs_last_val()
RETURNS SETOF record
AS $$
DECLARE
_seqname varchar;
_r record;
BEGIN
SELECT INTO _r null::varchar AS seqname, -1::integer AS lastval;
FOR _seqname IN
SELECT sequence_name
FROM information_schema.sequences
WHERE sequence_schema = 'public'
LOOP
_r.seqname = _seqname;
EXECUTE format('SELECT last_value FROM %s', quote_ident(_seqname)) INTO _r.lastval;
RETURN NEXT _r;
END LOOP;
RETURN;
END
$$ LANGUAGE 'plpgsql';
---
Then run:
SELECT * FROM seqs_last_val() AS (seqname varchar, last_value integer);
-- Alex
On Tue, Dec 04, 2018 at 07:03:11PM +0000, Campbell, Lance wrote:
> PostgreSQL 10.x
>
> What query will give the name of all sequences in a database and the current or next value for each sequence?
>
> This will give me everything except for the next value in the sequence.
>
> SELECT * FROM information_schema.sequences;
>
> Thanks,
>
> Lance
--
Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
From | Date | Subject | |
---|---|---|---|
Next Message | Alex Balashov | 2018-12-04 19:26:50 | Re: Sequences |
Previous Message | Campbell, Lance | 2018-12-04 19:03:11 | Sequences |