Yes , it work well now. i check that folder with your method , yes, the survey file is not there , and after i move the survey file to where it should be the code works .  Thank you so much. ... View more

data females; set apple.survey; where Gender = "F" ; run; proc contents data = apple._all_nods; run; /* NOTE: The SAS System stopped processing this step because of errors. 543 544 data females; 545 set apple.survey; ERROR: File APPLE.SURVEY.DATA does not exist. 546 where Gender = "F" ; 547 run; NOTE: The SAS System stopped processing this step because of errors. WARNING: The data set WORK.FEMALES may be incomplete. When this step was stopped there were 0 observations and 0 variables. WARNING: Data set WORK.FEMALES was not replaced because this step was stopped. NOTE: DATA statement used (Total process time): real time 0.02 seconds cpu time 0.03 seconds 548 proc contents data = apple._all_nods; ERROR: File APPLE._ALL_NODS.DATA does not exist. 549 run; NOTE: Statements not processed because of errors noted above. NOTE: PROCEDURE CONTENTS used (Total process time): real time 0.00 seconds cpu time 0.00 seconds NOTE: The SAS System stopped processing this step because of errors. */ ... View more

Thank you .   Yes , i am not make sure that . l always don't understand this point------- how to check check the contents of the APPLE library to confirm whether or not the dataset really exist? Would you like teach me how to do that ? ... View more