On Wed, Apr 07, 2004 at 06:01:03 -0700, Michael Groth <geek_1981@yahoo.de> wrote:
> hi,
>
> is it possible to use an index on the expression '(table_1.field &
> table_2.field)::int > 0' ?
>
> here's the whole query:
>
> SELECT
> COUNT(*)
> FROM
> users AS users
> JOIN
> search_profile AS search_profile ON
> (search_profile.bin_matching_field_0 &
> users.bin_matching_field_0)::int > 0
> WHERE
> users.id = 190
In 7.4 you can create indexes on expressions.