||Re: filter on logical plus date field
Heinz Kesting <Nobody@Nowhere.com>
||Thu, 6 Jan 2022 01:46:37 +0100
> In a table with a logical field 'returned' and a date field 'dateofrtrn' I'm getting weird results when I set a filter to not returned or isblank(dateofrtrn). I expect to see no records with a tick in the 'returned' field and also to see no records other than a blank value in the dateofrtrn field. However, I get the following (eg. of three records):
> set filt to not returned or isblank(dateofrtrn)
> list returned, dateofrtrn for recno()=2 or recno()=3 or recno()=14
> Record# returned dateofrtrn
> 2 .F. / /
> 3 .F. 22/12/2013
> 14 .T. / /
> I expect only records like 2. Why are records 3 and 14 listed?
My 2 cents:
set filt to not returned AND isblank(dateofrtrn)
with the OR condition record#3 would meet the filter.
Hope this helps
Kind regards, Heinz