Re: Alpha4 Available Now - Mailing list pgsql-hackers

From Дмитрий Фефелов
Subject Re: Alpha4 Available Now
Date
Msg-id 201002270959.01788.fozzy@ac-sw.com
Whole thread Raw
In response to Re: Alpha4 Available Now  (Michael Glaesemann <grzm@seespotcode.net>)
List pgsql-hackers
>
> On Feb 26, 2010, at 0:55 , Дмитрий Фефелов wrote:
>
> > http://developer.postgresql.org/pgdocs/postgres/release-9-0.html
> >
> > Performance section:
> >
> >> Simplify the forms foo <> true and foo <> false to foo = false and
> >> foo = true during query optimization.
> >
> > Will it work correct;ly when foo is NULL?
>
> It shouldn't have any effect: NULL <> anything and NULL = anything is
> NULL

I already got it, dumb question ;))



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