Hello every one
I have a small issue which is How to exclude some industry from my sample ?
as we know that SIC variable consists of numbers and alphabets (e.g., K1, G05, .. etc)
when i use IF sentence
data real; set rem; if SIC=j66 then delete; run;
it does not work
i get this message
NOTE: Variable j66 is uninitialized.
please how can do it
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