"29.The following SAS program is sumbitted:
data WORK.INFO;
infile'DATAFILE.TXT';
input @1 Company$20. @25 State $2. @;
if State=' ' theninput @30 Year;
else input @30City Year;
input NumEmployees;
run;
原题问的是 How many raw data records are read during each iteration ofthe DATA step?
变体是:How many rows are read duringeach iteration of the DATA step?"
原帖地址:http://www.mitbbs.com/article_t/Statistics/31340271.html
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真是不好意思。。。是一样的意思哈。。。囧。
谢谢mingfeng07童鞋 :)