在SAS中使用数字列名称

Question

我试图将数字变量传递到此宏.我能够通过KEEP和SET语句传递它,但当它到达RENAME语句时,我得到这些错误:

错误:变量'2013'n不存档WORK.'2013'n.

错误:文件WORK.'2013'n上的DROP,KEEP或RENAME选项无效.

%macro step2(year,cwyear);
    TITLE; FOOTNOTE;
    DATA WORK._EG_CFMT;
        LENGTH label $ 9;
        SET WORK."&year."n (KEEP="&year."n "&cwyear."n RENAME=("&year."n =start "&year."n =label)) END=__last;
        RETAIN fmtname "cw&year."n type "C";

        end=start;

              RUN;
    %mend step2;

当我改变双年份的双引号时.单引号,像这样:

SET WORK.'&year.'n (KEEP="&year."n "&cwyear."n RENAME=("&year."n =start "&year."n =label))

我收到此错误:

错误:文件工作.'&YEAR.'n.DATA不存在.

当我改回所有双引号并删除n时,我收到以下错误:

错误22-322:语法错误,期望以下之一:名称,带引号的字符串,;,CUROBS,END,INDSNAME,KEY,KEYRESET,KEYS,NOBS,OPEN,POINT,DATA,LAST,NULL.

我该如何工作？

谢谢您的帮助!

Answer 1

你需要有双引号和n.名称文字可以像任何其他字符串一样使用单引号或双引号.单引号不会解析其中的宏变量,double会.

例:

options validvarname=any;
options validmemname=extend;

data '2015'n;
  '2015'n = 5;
run;

%macro do_something(year=);
  data work.want;
    set "&year."n(rename="&year."n = start);
  run;
%mend do_something;

%do_something(year=2015);