Re: pgsql: Consider index-only scans even when there is no matching qual or

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От Tom Lane
Тема Re: pgsql: Consider index-only scans even when there is no matching qual or
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Msg-id 2321.1318360289@sss.pgh.pa.us
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Ответ на Re: pgsql: Consider index-only scans even when there is no matching qual or  (Bruce Momjian <bruce@momjian.us>)
Ответы Re: pgsql: Consider index-only scans even when there is no matching qual or
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Bruce Momjian <bruce@momjian.us> writes:
> Tom Lane wrote:
>> Consider index-only scans even when there is no matching qual or ORDER BY.
>>
>> By popular demand.

> Is this the COUNT(*) optimization?

Yeah, among other cases.

            regards, tom lane

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