In SAS, is there a difference between saying:
select * from table where col1 is missing
and
select * from table where col1 = .
We assume that col1 is numeric.
I think they're equivalent as is
select * from table where col1 is null
I think they're equivalent as is
select * from table where col1 is null
When I am not sure the the variable type, I tend to use MISSING() function, which will cover both Char and Number, and within Number, these wired missing values such as .z, .B, ._ etc.
Haikuo
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