From: Andreas Pflug <Andreas.Pflug@web.de>
To: pgsql-sql@postgresql.org
Subject: UPDATE FROM portability
Date: Mon, 24 Mar 2003 15:30:45 +0100
Message-ID: <3E7F1695.5050101@web.de> (raw)
Updating some rows in tab1 with corresponding values from tab2, pgsql style:
UPDATE tab1
SET value=T2.VALUE
FROM tab2 T2
WHERE T2.restr=1
AND tab1.key=T2.key <<<<<<
The same for MSSQL:
UPDATE tab1
SET value=T2.VALUE
FROM tab1 T1
JOIN tab2 T2 ON T1.key=T2.Key <<<<<<
WHERE T2.restr=1
I'm looking for a portable query style, without using a subquery in the
SET clause (which could make things quite slow)
Any hints?
Regards,
Andreas
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To: pgsql-sql@postgresql.org
Cc: Andreas.Pflug@web.de
Subject: Re: UPDATE FROM portability
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