On Sat, August 18, 2007 13:40, Stephen Davies wrote:
> select count(rdate),rdate from reading where sensor_id in
> (1137,1138,1139) group by rdate order by rdate desc limit 1;
>
> takes a few seconds but:
Interesting! However this is probably not the best list to ask, since
it's about the backend and quite independent of any interface. You may
have more luck on pgsql-general.
Jeroen