On Aug 22, 2011, at 2:17 PM, Grigori Solonovitch wrote:
> Thank you very much, Richard. This query is much faster and gives the same
> result from data point of view.
> I have only question about period of time from 00:00:00 till 00:02:59.
> Is this query correct for mentioned period of time?
>
> Grigori G. Solonovitch
I had a hunch you would ask about that. The technique is an expedient to
compensate for unfortunate overhead in a generalized query (despite DATE_TIME
being an indexed field). It works where the Select is invoked on the same day
as the pertinent records being queried. Consider midnight to be a boundary
exception. In any case, you should be asleep in bed at that time. :-)
Richard Sims
