Re: Can this query be optimized?

Claus,

> > I'm stuck optimizing the following query:
> > select distinct extract(year from date) as year, extract(month from
> date)
> > as month, date from week_pics order by date desc;
>
> Perhaps it would work to forget the "distinct" and instead GROUP BY
> date.

Also, do the following:
-- Make sure you have an index on week_pics.date
(Tom, did you guys ever straignten out the issue with DESC sorts on
indexes?)
-- Build the above query as a VIEW, which should improve performance
somewhat.

Technically, you could build an index on extract(month from date), I
believe, but I'm not sure how effective such an index would be in
practice.

-Josh

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