关于PROC SQL利用子查询的问题

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我的设想是按不同的分组变量求和，最后把新的求和变量和原数据放到一个表里；括号里面是两个子查询计算变量，第一次用了begindate作分组变量求和，第二次用了begindate,prodtype作分组变量求和；

但是结果总是出现“error: 子查询不止一行”；
程序如下：

proc sql;
create table test01 as
select begindate,prodtype,principal,


(select begindate,sum(principal) as sumpp2
from task01_raw
group by begindate),

(select begindate,prodtype,
sum(principal) as sumpp1
from task01_raw
group by begindate,prodtype)

from task01_raw;
quit;

求教如何实现

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关键词：proc sql sql ROC 子查询 PRINCIPAL

the subquery must return a single, unambiguous result for each value

linusx 发表于 2014-2-21 10:34
the subquery must return a single, unambiguous result for each value

I don't see your point. The subquery can be excuted by its own sql proc.
Furthermore the code followed is valid:

proc sql;
create table test01 as
select begindate,prodtype,principal,
sum(principal) as sumpp2
from task01_raw
group by begindate;
quit;

Only I want to know how to merge several procedure like this.

1. /* try this */
   
2. 
   
3. proc sql;
   
4.     create table test01 as
   
5.     select a.begindate,
   
6.            a.prodtype,
   
7.            a.sumpp1,
   
8.            sum(a.principal) as sumpp2
   
9.      from (select begindate, prodtype, principal, sum(principal) as sumpp1
   
10.            from task01_raw
    
11.            group by begindate, prodtype
    
12.            ) as a
    
13.     group by a.begindate;
    
14. quit;

复制代码

yongyitian 发表于 2014-2-21 12:22

很有启发``3Q