Claudio Freire <[email protected]> writes:
> On Wed, Aug 7, 2013 at 3:12 PM, Robert DiFalco <[email protected]>
> wrote:
>> I want to get the last call_activity record for a single user.
> Create an index over (user_id, called desc), and do
> select * from call_activity where user_id = blarg order by called desc limit 1
Note that there's no particular need to specify "desc" in the index
definition. This same index can support searches in either direction
on the "called" column.
regards, tom lane
--
Sent via pgsql-performance mailing list ([email protected])
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
