Kbase P18364: Unknown value character "?" is being evaluated as unknown. I
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
17/02/2004 |
|
Status: Unverified
FACT(s) (Environment):
Progress 9.1x
SYMPTOM(s):
Unknown value character "?" is being evaluated as unknown. In other cases it is evaluated as a string literal "?".
CAUSE:
The question mark is a special character that represents the unknown value. Progress treats a quoted question mark ("?") in a procedure or an input field as a question mark character. It treats an unquoted question mark (?) in a procedure or an input field as an unknown value. The question mark (?) character in the first position of a field always equals an unknown value.
FIX:
Test for the unknown value and assign the variable to the literal value.
Example Code Snippet:
ASSIGN Variable.
IF Variable = ? THEN
DO:
ASSIGN Variable = "?".
END.