Subject Re: filter on logical plus date field From Ken Mayer <dbase@nospam.goldenstag.net> Date Wed, 5 Jan 2022 16:48:24 -0800 Newsgroups dbase.getting-started On 1/5/2022 4:10 PM, Rouke wrote: > 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? "not returned" can include items that will appear as false when you query them, but may be "null" or empty. Try: set filter to returned=.f. or isblank(dateofrtrn) (If you're using current versions of dBASE, you can also use the word "false" or the word "true" rather than the clunky ".t." and ".f." ... I assume you are, since you're using "not" instead of ".not" and "or" instead of ".or.") Ken -- *Ken Mayer* Ken's dBASE Page: http://www.goldenstag.net/dbase The dUFLP: http://www.goldenstag.net/dbase/index.htm#duflp dBASE Books: http://www.goldenstag.net/dbase/Books/dBASEBooks.htm dBASE Tutorial: http://www.goldenstag.net/dbase/Tutorial/00_Preface.htm dBASE Web Tutorial: http://www.goldenstag.net/dbase/WebTutorial/00_Menu.htm