Re: More stable query plans via more predictable column statistics

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От Tomas Vondra
Тема Re: More stable query plans via more predictable column statistics
Дата
Msg-id 1457539942.24545.73.camel@2ndquadrant.com
обсуждение исходный текст
Ответ на Re: More stable query plans via more predictable column statistics  (Alvaro Herrera <alvherre@2ndquadrant.com>)
Ответы Re: More stable query plans via more predictable column statistics  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Wed, 2016-03-09 at 12:02 -0300, Alvaro Herrera wrote:
> Tomas Vondra wrote:
> 
> > FWIW while looking at the code I noticed that we skip wide varlena
> > values but not cstrings. Seems a bit suspicious.
> 
> Uh, can you actually have columns of cstring type?  I don't think you
> can ...

Yeah, but then why do we handle that in compute_scalar_stats?

-- 
Tomas Vondra                  http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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