Tom Lane, 19.07.2012 16:52:
If you're using a reasonably recent version of PG, replacing the NOT IN
by a NOT EXISTS test should also help.

Thanks. I wasn't aware of that (and the NOT EXISTS does indeed produce the same 
plan as the OUTER JOIN solution)


Now I was wondering if a DELETE statement could be rewritten with the same 
"strategy":

Not at the moment.  There have been discussions of allowing the same
table name to be respecified in USING, but there are complications.

Thanks as well. It's not a big deal for me. I was just curious if I missed 
something.

Regards
Thomas




--
Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-sql

Reply via email to