Re: Performance of NOT IN and <> with PG 9.0.4

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От Robert Haas
Тема Re: Performance of NOT IN and <> with PG 9.0.4
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Msg-id BANLkTin1TRna9JDL9se+j7ROdaATXSqP+A@mail.gmail.com
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Ответ на Performance of NOT IN and <> with PG 9.0.4  (Jasmin Dizdarevic <jasmin.dizdarevic@gmail.com>)
Ответы Re: Performance of NOT IN and <> with PG 9.0.4  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Tue, May 24, 2011 at 3:32 PM, Jasmin Dizdarevic
<jasmin.dizdarevic@gmail.com> wrote:
> enable_material = off

Is there any chance you can reproduce this with a simpler test case
that doesn't involve quite so many joins?

It looks to me like shutting off enable_material is saving you mostly
by accident here.  There's only one materialize node in the whole
plan.

And just incidentally, do you have any of the other enable_* settings
turned off?

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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