On Sun, 7 Mar 2004, David Teran wrote:
> we need to optimize / speed up a simple select:
>
> explain analyze select
> ((t0.int_value-t1.int_value)*(t0.int_value-t1.int_value))
> from job_property t0, job_property t1
> where t0.id_job_profile = 5
> and t1.id_job_profile = 6
> and t1.id_job_attribute = t0.id_job_attribute
> and t1.int_value < t0.int_value;
Try to add an index on (id_job_profile, id_job_attribute) or maybe even
(id_job_profile, id_job_attribute, int_value)
--
/Dennis Björklund