From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Vincenzo Romano <vincenzo(dot)romano(at)gmail(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: INSERT ... RETURNING in v8.2 |
Date: | 2007-06-12 16:20:44 |
Message-ID: | 8539.1181665244@sss.pgh.pa.us |
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Lists: | pgsql-general |
Vincenzo Romano <vincenzo(dot)romano(at)gmail(dot)com> writes:
> Well, at least on v8.2.4 I cannot return count(*), that is the
> number of lines actually inserted into the table. Nor I can return
> any aggregate function of them.
> Am I doing anything wrong or is there some missing sentence in the
> documentation?
I would think the error message you get would make it pretty plain
that this wasn't just an oversight:
regression=# insert into int4_tbl default values returning count(*);
ERROR: cannot use aggregate function in RETURNING
RETURNING is supposed to return one row per inserted/deleted/updated
tuple, so what you suggest isn't sensible.
regards, tom lane
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