zoumingwang2004 发表于 2010-3-17 12:58 
求助SAS中字符型变量与字符变量的区别?能不能给予一个清楚的说明或者举例!
In fact, there are two variable types in SAS, namely numeric and character.
proc print data = sashelp.class(obs=2);
var _numeric_;
run;
proc print data = sashelp.class(obs=2);
var _character_;
run;