From: Gnanakumar <gnanam@zoniac.com>
To: pgsql-sql@postgresql.org
Subject: Is it possible to get DISTINCT rows from RETURNING clause?
Date: Thu, 17 Feb 2011 12:35:51 +0530
Message-ID: <003d01cbce71$1eaf1c90$5c0d55b0$@com> (raw)
Hi,
Is it possible to get DISTINCT rows from an UPDATE statement using RETURNING
clause?
"MYTABLE" columns are:
APRIMARYKEYCOLUMN
ABOOLEANCOLUMN
EMAIL
COLUMN1
COLUMN2
COLUMN3
UPDATE using RETURNING clause query:
UPDATE MYTABLE SET ABOOLEANCOLUMN = true FROM MYTEMPTABLE WHERE EMAIL =
MYTEMPTABLE.EMAIL RETURNING EMAIL, COLUMN1, COLUMN2, COLUMN3;
Here in this case, I expect to return distinct rows from these columns:
EMAIL, COLUMN1, COLUMN2, COLUMN3.
I even tried out some ways of getting distinct rows, but it doesn't work.
Though I can still solve this at application layer, I'm trying to find
whether this could be controlled at query-level. Any different
ideas/suggestions are appreciated.
Regards,
Gnanam
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Cc: gnanam@zoniac.com
Subject: Re: Is it possible to get DISTINCT rows from RETURNING clause?
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