>>I have seen some code which is as follows
>>
>>select names
>>set order to tag datex
>>set key to dtot({})
>>
>>The file is ordered by date time
>>
>>Does the set key set a filter to today's date?
>>
>>If not what does it do?
>
>You should finaly learn how to use this forum, in special the pre tags. Is it realy that tricky to copy a couple of lines out of a reply?
>
>How to test?
>

>?dtot({})
>?dtot({})=DATETIME()
>?dtot(DATE())=DATETIME()
>?dtot(DATE())
>

>
>DATETIME is a second, you compare the first second of today with any other second of today. This will not match. Or only by a chance of 1/86400.
>
>The riddle might be solved with
>

HELP SET KEY

>
>Pro tip:
>

>set key to RANGE dtot(DATE()),dtot(DATE()+1)-1
>*IOW SET KEY to a range between the first second of today and a second before the first second of tomorow, aka the last second of today.
>

>
>Alles klar?
>
>:D


Yes in my code having test it sets a filter to records without a date

Thanks for your heldp