sas base 123 两个字符串长度问题疑惑求解答!
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question 72
The following SAS program is submitted:
data work.test;
First = 'Ipswich, England';
City = substr(First,1,7);
City_Country = City!!', '!!'England';
run;
Which one of the following i ...
2014-9-14 02:30 - yuyuelife - SAS专版