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Re: Problems with hash join over nested loop - Mailing list pgsql-performance

From Tom Lane
Subject Re: Problems with hash join over nested loop
Date
Msg-id 13775.1383002035@sss.pgh.pa.us
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In response to Problems with hash join over nested loop  (Jim Nasby <jnasby@enova.com>)
Responses Re: Problems with hash join over nested loop
Re: Problems with hash join over nested loop
List pgsql-performance
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Jim Nasby <jnasby@enova.com> writes:
> I've been working on trying to normalize a table that's got a bunch of text fields. Normalizing the first 4 has been
anon-issue. But when I try and normalize 2 additional fields a bunch of query plans go belly-up. 

Try increasing join_collapse_limit/from_collapse_limit.  I'm a bit
confused by your description but I think maybe you've got more than 8
relations in the subqueries.

            regards, tom lane

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