Any ideas?
-----Original Message-----
From: Gnanakumar [mailto:gnanam@zoniac.com]
Sent: Thursday, February 17, 2011 12:36 PM
To: pgsql-sql@postgresql.org
Subject: Is it possible to get DISTINCT rows from RETURNING clause?
Hi,
Is it possible to get DISTINCT rows from an UPDATE statement using RETURNING
clause?
"MYTABLE" columns are:APRIMARYKEYCOLUMNABOOLEANCOLUMNEMAILCOLUMN1COLUMN2COLUMN3
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
