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Re: BUG #5885: Strange rows estimation for left join

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Maxim Boguk" <Maxim(dot)Boguk(at)gmail(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #5885: Strange rows estimation for left join
Date: 2011-02-15 03:27:31
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
"Maxim Boguk" <Maxim(dot)Boguk(at)gmail(dot)com> writes:
> I found that strange effect while helping with slow query on russian
> postgresql online forum.

Please try to put together a self-contained test case for this.
I could not reproduce such a weird result here, but that probably
just means there's something strange about your data distribution.

			regards, tom lane

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Subject: Re: BUG #5883: Error when mixing SPI_returntuple with returning regular HeapTuple
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Subject: BUG #5885: Strange rows estimation for left join

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