AW: Question: If you %Trim( a blank field), does %Trim return a single blank or a *NULL ?

Hi,

If you %Trim( a blank field), does %Trim return a single blank or a *NULL

?
If it's a varying field, neither.

Just check the length of the trimmed value and you'll find out it is *Zeros,
that means nothing.
But Nothing is not the same as a NULL-value.
NULL values are available for all data type. A Null value is a value outside
the valid range and must be checked separately. Within RPG a real NULL value
can only be handled, if the field (containing the NULL-Value) is located
within a database file.

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"

-----Ursprüngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im
Auftrag von Voris, John
Gesendet: Saturday, 21. February 2009 02:58
An: rpg400-l@xxxxxxxxxxxx
Cc: rpg400-l@xxxxxxxxxxxx
Betreff: Question: If you %Trim( a blank field), does %Trim return a single
blank or a *NULL ?


It looks like if the variable is blank, it is acting OK.
So the line below does not bomb out. But I was curious what it
resolves to.

When %Trim(SFLoption) = '2' ;