Thread: postgresql bug?
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Old 04-11-2008, 08:54 AM
Tom Lane
 
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Default Re: postgresql bug?

uwcssa <uwcssa@gmail.com> writes:
> select count(*) from T1, T2 where T1.b=3DT2.c and (T1.a>10 and T1.a<20) or=
> (
> T1.a>90 and T1.a<100)


> the selectivity estimate on T1 is always 1.0 the reason is the
> re-l->baserestrictinfo is NULL for the second query in
> set_baserel_size_estimates().


Sure you're not looking at T2?

regards, tom lane

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