[Kjell Tore Fossbakk - Wed at 09:45:22AM +0200]
> database=> explain analyze select count(*) from test where p1=53 and
> time > now() - interval '24 hours' ;
Sorry to say that I have not followed the entire thread neither read the
entire email I'm replying to, but I have a quick hint on this one (ref my
earlier thread about timestamp indices) - the postgresql planner will
generally behave smarter when using a fixed timestamp (typically generated
by the app server) than logics based on now().
One of my colleagues also claimed that he found the usage of
localtimestamp faster than now().
--
Tobias Brox, +86-13521622905
Nordicbet, IT dept