Re: Table optimization ideas needed
| From: | Shelley | Date: | Wed, 26 Mar 2008 02:16:02 +0000 |
| Subject: | Re: Table optimization ideas needed | ||
| References: | 1 2 | Groups: | php.db |
| Request: | Send a blank email to php-db+get-44794@lists.php.net to get a copy of this message | ||
Yes, Index can help a lot.
But actually there has been five indices. The table takes 1.4G space while
the indices take 2.3G.
The select sentence is still slow. :(
On Tue, Mar 25, 2008 at 11:50 AM, Chris <dmagick@gmail.com> wrote:
> Shelley wrote:
> > Hi all,
> >
> > I made a post a week ago to ask for the idea of the fastest way to get
> > table records.
> > Fyi,
> >
>
> http://phparch.cn/index.php/mysql/35-MySQL-programming/126-fastest-way-to-get-total-records-from-a-table
> >
> >
> > Look at the time even a 'count(1)' took.
> > Then you can imagine how much time sql such as "select a,b from
> > table_name where c='d'" will take.
> >
> > I have a lot of tables like that. So my questions is:
> > What's your practice to optimize tables like that?
>
> I pretty much follow what I've said in this article:
>
>
> http://www.designmagick.com/article/16/PostgreSQL/How-to-index-a-database
>
> --
> Postgresql & php tutorials
> http://www.designmagick.com/
>
--
Regards,
Shelley