The defined symbol will be interpreted as NULL when it occurs in a text file, Excel file or an inline statement. This is a user-defined variable.
Syntax:
NullInterpret
Examples:
set NullInterpret=' ';
set NullInterpret =;
will NOT return NULL values for blank values in Excel (but it will for a csv text file)
set NullInterpret ='';
will return NULL values for blank values in Excel (but will NOT for a csv text files)