yesterday it work, but today , it doesn't work , why

[tianerhu]

data females;
   set apple.survey;
where Gender = "F";
run;
proc contents data = apple._all_  nods ;
run;

[Reeza · Accepted solution]

Does the log have the same error as last time? Did you remember to run the LIBNAME statement for the apple library?

[tianerhu]

No, i don't do that , need I do that( use the libname statement) every time when i attend to use the file survey (in this case) ?

[tianerhu]

Yes, the log report error which the same to yesterday , (error : the apple is not assigned)

[tianerhu]

I see, thank you so much. It works well now.