Re: [COMMITTERS] pgsql: Remove too-smart-for-its-own-good optimization of not overwriting

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От Tom Lane
Тема Re: [COMMITTERS] pgsql: Remove too-smart-for-its-own-good optimization of not overwriting
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Msg-id 15322.1262664181@sss.pgh.pa.us
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Ответ на Re: [COMMITTERS] pgsql: Remove too-smart-for-its-own-good optimization of not overwriting  (Robert Haas <robertmhaas@gmail.com>)
Ответы Re: [COMMITTERS] pgsql: Remove too-smart-for-its-own-good optimization of not overwriting  (Robert Haas <robertmhaas@gmail.com>)
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Robert Haas <robertmhaas@gmail.com> writes:
> I think you're dismissing the idea too cavalierly.  If A generates B,
> A is inevitably changed frequently, but the changes to A affect B only
> rarely, this is a good trick.

The only output file that is unlikely to change is schemapg.h, which is
depended on by exactly one .c file.  It's a waste of time to try to
optimize this at all ...
        regards, tom lane


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