Question

使用的实际查询：

SELECT X.TNO,Y.KID,X.TBALANCE FROM    
(SELECT A.TNO,SUM(A.TBAL) TBALANCE,B.CNO FROM TABLE1 A,TABLE2 B    
WHERE A.TNO=B.TNO AND B.CPRIM='Y' AND A.TCODE='M'    
GROUP BY A.TNO,B.CNO) X, TABLE3 Y     
WHERE X.CNO=Y.CNO;

实际结果：

TABLE3.KID   TABLE2.TNO   TABLE1.SUM(TBAL)
------------------------------------------  
R23          34           30   
R23          35           40  
R55          38           10   
R55          39           50

我有3个表格，如下所示

TABLE1：

TNO  TBAL  TCODE 
-----------------   
34      30    M  
35      40    M  
36      50    N  
38      10    M  
39      50    M

TABLE2：

TNO  CNO   CPRIM  
----------------
34     A3    Y  
34     B3    N  
34     C1    N  
35     D1    Y  
35     D2    N  
38     E2    Y  
38     E4    N  
39     F3    Y  
39     F5    N

表3：

CNO   KID  
----------  
A3     R23  
35     R23  
E2     R55  
F3     R55

需要以上3个表中的结果，其中TABLE1.TCODE =＆＃39; M＆＃39; AND TABLE2.CPRIM =＆＃39; Y＆＃39;：

TABLE3.KID   TABLE2.TNO   TABLE1.SUM(TBAL)
------------------------------------------  
R23          34           70   
R23          35           70  
R55          38           60  
R55          39           60

请帮我实现上述结果

Answer 1

您确定要的结果吗？这对我来说没有意义......

这将是我认为的标准聚合：

SELECT C.KID,B.CNO, SUM(A.TBAL)
FROM TABLE3 C
     JOIN TABLE2 B ON B.CNO = C.CNO
     JOIN TABLE1 A ON A.TNO = B.TNO 
WHERE B.CPRIM='Y' AND A.TCODE='M'
GROUP BY C.KID,B.CNO

但要给出结果，你似乎要求......

WITH KIDSUM as (SELECT C.KID, SUM(A.TBAL) as SUMBAL      
                  FROM TABLE3 C                          
                       JOIN TABLE2 B ON B.CNO = C.CNO    
                       JOIN TABLE1 A ON A.TNO = B.TNO    
                 WHERE B.CPRIM='Y' AND A.TCODE='M'       
                 GROUP BY C.KID                          
)                                                        
SELECT K.KID,B.TNO, K.SUMBAL                             
FROM TABLE3 C                                            
     JOIN TABLE2 B ON B.CNO = C.CNO                      
     JOIN TABLE1 A ON A.TNO = B.TNO                      
     JOIN KIDSUM K ON K.KID = C.KID                      
WHERE B.CPRIM='Y' AND A.TCODE='M'

DB2查询以显示小计

1 个答案: