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标题: 想实现如下程序：但是有错误 [打印本页]

作者: shiyiming 时间: 2010-6-13 12:42
标题: 想实现如下程序：但是有错误
data basic_lead;
set lead1 basic1 lead2 basic2 lead3 basic3 lead4 basic4;
run;

但是上面的4是有宏N控制的所以必须用N替换

我是这样做的但出错了

data basic_lead(drop=tvalue probt);
do i=1 to &N;
%let K=i;
%let K=&K;
set lead&K. basic&K.;
end;
run;
得到的不是lead1 而是leadi

请问该如何实现啊，谢谢

作者: shiyiming 时间: 2010-6-13 17:57
标题: Re: 想实现如下程序：但是有错误
[code:3ti9j38g]%macro ds_name;
%local ds_name;
%do i=1 %to &n;
%let ds_name=&ds_name lead&i basic&i;
%end;
%let ds_name=&ds_name;
&ds_name
%mend;
data basic_lead(drop=tvalue probt);
set %ds_name;
run;[/code:3ti9j38g]

[code:3ti9j38g]data _null_;
call execute('data basic_lead(drop=tvalue probt);set');
do i=1 to &n;
call execute(cat('lead',i,' ','basic',i));
end;
call execute(';run;');
run;[/code:3ti9j38g]

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