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
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