On Tue, Mar 4, 2008 at 9:53 AM, MB Software Solutions General Account <
[EMAIL PROTECTED]> wrote:
> Peter Cushing wrote:
> > MB Software Solutions General Account wrote:
> >
> >> sele daynum, time, start ;
> >> from i_sched ;
> >> where empty(stop) or stop >= ldDate + (daynum-1);
> >> and start <= ldDate + (daynum-1);
> >> into cursor TempISched
> >>
> >>
> > You might also want to put brackets round the OR part of the where as
> > the AND takes precedence over this:
> >
> > where (empty(stop) or stop >= ldDate + (daynum-1)) and start <= ldDate +
> (daynum-1)
> >
> > or as Christof was suggesting:
> >
> > where (stop = {} or stop >= ldDate + (daynum-1)) and start <= ldDate +
> (daynum-1)
> >
> >
>
> Hi Peter,
>
> Yeah, I did that too. I pointed that out to the other developer the
> other day when I was analyzing this. Apparently it had been that way
> for some time....wondered about the legitimacy of those past results!!!!!
>
---------------------------------------------------------------------------
Depending on the # of rows in the table an OR could be a bad thing.
>> sele daynum, time, start ;
>> from i_sched ;
>> where empty(stop) or stop >= ldDate + (daynum-1);
>> and start <= ldDate + (daynum-1);
>> into cursor TempISched
sele daynum, time, start ;
from i_sched ;
where empty(stop) ;
union all
sele daynum, time, start ;
from i_sched ;
where stop >= ldDate + (daynum-1);
and start <= ldDate + (daynum-1);
into cursor TempISched
HTH
--
Stephen Russell
Sr. Production Systems Programmer
Mimeo.com
Memphis TN
901.246-0159
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