我已经定义了宏变量&name1到&name1000
想实现以下程序
data TEST2;
set weather;
if &name1 in ('M' 'T' '-') then &name1='';
if &name2 in ('M' 'T' '-') then &name2='';
if &name3 in ('M' 'T' '-') then &name3='';
if &name4 in ('M' 'T' '-') then &name4='';
if &name5 in ('M' 'T' '-') then &name5='';
....................
if &name1000 in ('M' 'T' '-') then &name1000='';
run;
一条一条的改实在麻烦,请问各位大牛哪种简单方法可以实现?