| From: | Дмитрий Фефелов <fozzy(at)ac-sw(dot)com> |
|---|---|
| To: | Michael Glaesemann <grzm(at)seespotcode(dot)net> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, Josh Berkus <josh(at)agliodbs(dot)com> |
| Subject: | Re: Alpha4 Available Now |
| Date: | 2010-02-27 03:59:01 |
| Message-ID: | 201002270959.01788.fozzy@ac-sw.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | 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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