用宏拆分数据集失败

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我用下列方法拆分数据集,但是没有成功,求问高手应该如何解决

1. %macro split;
   
2. proc sql;
   
3.     create table tmp as
   
4.     select distinct date, _ric
   
5.     from work.a;
   
6. 
   
7.     select count(*)
   
8.     into :obs
   
9.     from work.tmp;
   
10. 
    
11.     %let obs=&obs.;
    
12. 
    
13.     select date, _ric, catx("_", "work.data", substr(_ric, 1, 13), put(date, yymmddn8.))
    
14.     into :date1-:date&obs., :ric1-:ric&obs., :setname1-:setname&obs.
    
15.     from work.tmp;
    
16. quit;
    
17. 
    
18. data
    
19. %do i = 1 %to &obs.;
    
20.     &&setname&i
    
21. %end;
    
22. ;
    
23.     set work.a;
    
24. select;
    
25. %do i = 1 %to &obs.;
    
26.     when(_ric = "&&ric&i" and date = &&date&i) output &&setname&i;
    
27. %end;
    
28. end;
    
29. %mend split;
    
30. 
    
31. %split

复制代码

error 是 ERROR: Unsatisfied WHEN clause and no OTHERWISE clause at line 271 column 2
NOTE: The SAS System stopped processing this step because of errors.
WARNING: The data set WORK.DATA_AXPA061203500_20120103 may be incomplete. When this step was stopped there were 0 observations and 106 variables.
WARNING: Data set WORK.DATA_AXPA061203500_20120103 was not replaced because this step was stopped.

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关键词：数据集 observations observation incomplete Processing 循环 拆分

已解决,问题在于date variable的格式问题,改成numerical variable就ok了