[thelist] sql query for sum of timediff

[Tab Alleman]

If you do this, do you get any rows?:

select *
from presence
where starttime is null OR endtime is null


> -----Original Message-----
> From: thelist-bounces at lists.evolt.org
> [mailto:thelist-bounces at lists.evolt.org]On Behalf Of Canfield, Joel
> Sent: Thursday, June 01, 2006 7:34 PM
> To: thelist at lists.evolt.org
> Subject: Re: [thelist] sql query for sum of timediff
> 
> 
> > select firstname, lastname, sum(timediff(endtime,starttime))
> > from presence
> > where starttime between '2006-05-31 0:00:00' and 
> '2006-05-31 23:59:59'
> > group by firstname, lastname
> 
> this returns zero sums in places I know there to be data (names are
> unique)
> 
> still working on it
> -- 
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