进来看看而已

%let vartest=weight;
%let dsid=%sysfunc(open(sashelp.class));

%put %sysfunc(ifc(%sysfunc(varnum(&dsid,&vartest))
                   ,Variable &vartest exists in the dataset!
                   ,Variable &vartest does not exist in the dataset!));
%let rc=%sysfunc(close(&dsid));

3# pobel


高手您能注释一下吗？我是菜鸟有些东西还看不懂，谢谢！

*** Provide the variable you want to check;
%let vartest=weight;

*** Open dataset;
%let dsid=%sysfunc(open(sashelp.class));

*** Get the position of the test variable;
%let varnum=%sysfunc(varnum(&dsid,&vartest));

*** If the position is not 0, then the variable exists in the dataset;
%put The number of the position of variable &vartest: &varnum;

*** Close the dataset;
%let rc=%sysfunc(close(&dsid));

走查询元数据表应该也可以吧