Re: a wrong index choose when statistics is out of date - Mailing list pgsql-hackers

From Andy Fan
Subject Re: a wrong index choose when statistics is out of date
Date
Msg-id 87edcl9hlu.fsf@163.com
Whole thread Raw
In response to Re: a wrong index choose when statistics is out of date  (David Rowley <dgrowleyml@gmail.com>)
Responses Re: a wrong index choose when statistics is out of date
List pgsql-hackers
David Rowley <dgrowleyml@gmail.com> writes:

> On Thu, 7 Mar 2024 at 23:40, Andy Fan <zhihuifan1213@163.com> wrote:
>>
>> David Rowley <dgrowleyml@gmail.com> writes:
>> > If you don't want the planner to use the statistics for the column why
>> > not just do the following?
>>
>> Acutally I didn't want the planner to ignore the statistics totally, I
>> want the planner to treat the "Const" which probably miss optimizer part
>> average, which is just like what we did for generic plan for the blow
>> query.
>
> I'm with Andrei on this one and agree with his "And it is just luck
> that you've got the right answer".

Any example to support this conclusion? and what's the new problem after
this?

-- 
Best Regards
Andy Fan




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