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careerchange (Stupid) 于 (Fri Mar 6 17:42:51 2009) 提到:
data two;
set one;
where var1=. or var2="";
run;
Now suppose we do not know var1 and var2 are numerical or strings,
how to specify them as missing?
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libra (秤子) 于 (Fri Mar 6 17:45:24 2009) 提到:
didn't do this but try "var<0" or maybe "var*1<0"
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papayaya (青鱼) 于 (Fri Mar 6 18:49:47 2009) 提到:
there is a fun
