From: Ottó Havasvölgyi <havasvolgyi.otto@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Treating result of subselect as row
Date: Tue, 6 Nov 2007 11:09:30 +0100
Message-ID: <34608c0c0711060209h6056b717x4ce746ab342868c9@mail.gmail.com> (raw)
Hi,
If I have a subselect that returns one row, then how can I use this in
expressions that expects row constructors in the operands, like OVERLAPS or
IN ?
SELECT (subselect1) OVEPLAPS (subselect2) -- both subselect returns one
row and two columns
OR:
SELECT (SubselectWithOneRow) IN (subselect2) -- but here subselect2 may
return many rows, but column counts are equal
I tried these in 8.2 without success.
Thanks,
Otto
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