I don't know if you can do that using the same logic.
Perhaps someone else can help?
For sure, you can use a subselect.
delete from table1
where col1 in (SELECT a.col1
FROM table1 a JOIN table1 b ON a.col2 = b.col2
WHERE a.col3 = something
AND b.col3 = somethingelse)
----- Original Message -----
Sent: Wednesday, June 15, 2005 8:35 AM
Subject: RE: [SQL] update syntax
Thanks. The UPDATE works ok now. But using the same logic it doesnt seem possible to delete rows. Is this also possible?
/P
-----Original Message-----
From: Bruno Prévost [mailto:bp@interaction.ws]
Sent: 15 June 2005 14:22
To: Praveen Raja
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] update syntax
UPDATE table1
SET col1 = b.col1
FROM table1 b
WHERE table1.col2 = b.col2 and
table1.col3 = something and
b.col3 = somethingelse
----- Original Message -----
Sent: Wednesday, June 15, 2005 7:39 AM
Subject: [SQL] update syntax
Hi,
While using Ms SQL server I used to write update statements like this,
UPDATE a SET a.col1 = b.col1
FROM table1 a
INNER JOIN table1 b
ON a.col2 = b.col2
WHERE a.col3 = something
AND b.col3 = somethingelse
But I cant seem to do this in postgres, it gives me an error saying syntax error at or near .. How can I do something similar to this i.e. join on the same table?
Thanks,
/P
