From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Andrew Rawnsley <ronz(at)ravensfield(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Sequences |
Date: | 2003-09-19 04:21:25 |
Message-ID: | 9318.1063945285@sss.pgh.pa.us |
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Lists: | pgsql-general |
Andrew Rawnsley <ronz(at)ravensfield(dot)com> writes:
> Sequence information is stored in their individual 1-row tables, with
> an entry is pg_class of relkind 'S'. So you can't
> really get a list of sequences with last_value in a single query
Nope, you can't ... and I surely hope you weren't expecting that the
last_values would all be simultaneously valid ...
What I'd try for this is
select relname, get_last_value(relname) from pg_class where relkind = 'S';
where get_last_value() is a plpgsql function that does an EXECUTE.
But you must realize that there will be time skew between the
last_values.
What is the problem you really want to solve?
regards, tom lane
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