Re: index scan with functional indexes -- solved - Mailing list pgsql-hackers

Interesting it works now, and the good news is it is *WAY* faster, this
might be able to speed up marc's doc search by orders of magnitude

this is searching 100536 rows
select * from url where fn_strrev(url) like fn_strrev('%beta12.html');
1.57ms


explain select * from url where url like '%beta12.html';3310.38 ms

Dave

On Tue, 2004-01-27 at 13:48, Tom Lane wrote:
> Dave Cramer <pg@fastcrypt.com> writes:
> > I'm using 7.4.1, the db was initdb --locale='C'
> > and no I don't get them on plain indexes ????
> 
> Oh?  If it's 7.4 then you can confirm the locale selection with
> "show lc_collate" and "show lc_ctype" (I think the first of these
> is what the LIKE optimization checks).
> 
>             regards, tom lane
> 
-- 
Dave Cramer
519 939 0336
ICQ # 1467551