BTW, will it improve something if you change your index to "my_table(
id, the_date )"?
Rgds,
-Dimitri
On 9/5/07, JS Ubei <jsubei@yahoo.fr> wrote:
> Hi all,
>
> I need to improve a query like :
>
> SELECT id, min(the_date), max(the_date) FROM my_table GROUP BY id;
>
> Stupidly, I create a B-tree index on my_table(the_date), witch is logically
> not used in my query, because it's not with a constant ? isn't it ?
>
> I know that I can't create a function index with an aggregative function.
>
> How I can do ?
>
> thanks,
>
> jsubei
>
>
>
>
>
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