Re: WIP: patch to create explicit support for semi and anti joins - Mailing list pgsql-hackers

From Tom Lane
Subject Re: WIP: patch to create explicit support for semi and anti joins
Date
Msg-id 1463.1218740675@sss.pgh.pa.us
Whole thread Raw
In response to Re: WIP: patch to create explicit support for semi and anti joins  ("Kevin Grittner" <Kevin.Grittner@wicourts.gov>)
List pgsql-hackers
"Kevin Grittner" <Kevin.Grittner@wicourts.gov> writes:
> Tom Lane <tgl@sss.pgh.pa.us> wrote: 
>> I can't yet *prove* that I can get better estimates
>> with the added info, but if not, that just means I need to rethink what
>> to pass down exactly.
> I'll see if I can do some testing here to confirm plan improvements
> and check estimate accuracy.  This is only on the trunk, not any
> stable branches?  I assume that effort should wait until you have a
> candidate for the estimate improvements?

Yeah.  If you feel like it you can test what I just committed, but it's
definitely not where I expect to end up in another few days.
        regards, tom lane


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