Re: Expression index ignores column statistics target

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От Michael Fuhr
Тема Re: Expression index ignores column statistics target
Дата
Msg-id 20051001052319.GA46657@winnie.fuhr.org
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Ответ на Re: Expression index ignores column statistics target  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Sat, Oct 01, 2005 at 12:53:03AM -0400, Tom Lane wrote:
> The code does in fact honor per-column statistics targets attached to
> expression indexes, viz
> 
> alter table myfuncindex alter column pg_expression_1 set statistics 100;

Aha -- that's the piece I didn't know about.  I was wondering where
those statistics were being stored, since they were affected by
default_statistics_target but not by per-column statistics targets.
And now I see them when I don't restrict queries against pg_stats
by just the table or column name.  Thanks.

-- 
Michael Fuhr


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