| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Nathan Boley <npboley(at)gmail(dot)com>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Collect frequency statistics for arrays |
| Date: | 2012-03-01 22:44:58 |
| Message-ID: | 19303.1330641898@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> Excerpts from Tom Lane's message of jue mar 01 18:51:38 -0300 2012:
>> How would we make it optional? There's noplace I can think of to stick
>> such a knob ...
> Uhm, attoptions?
Oh, I had forgotten we had that mechanism already. Yeah, that might
work. I'm a bit tempted to design the option setting so that you can
select whether to keep the btree stats, the new stats, or both or
neither --- after all, there are probably plenty of databases where
nobody cares about the array-containment operators either.
That leaves the question of which setting should be the default ...
regards, tom lane
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