From: Alex Balashov <abalashov@evaristesys.com>
To: pgsql-admin@lists.postgresql.org
Subject: Re: Sequences
Date: Tue, 4 Dec 2018 14:17:51 -0500
Message-ID: <20181204191751.GL769@tlaquepaque.localdomain> (raw)
In-Reply-To: <87E05184-8087-4225-BBCC-F60B74F18023@illinois.edu>
References: <87E05184-8087-4225-BBCC-F60B74F18023@illinois.edu>
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/
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To: pgsql-admin@postgresql.org
Cc: abalashov@evaristesys.com, pgsql-admin@lists.postgresql.org
Subject: Re: Sequences
In-Reply-To: <20181204191751.GL769@tlaquepaque.localdomain>
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