使用Union在Oracle中设置结果集

问题描述

我在Oracle SQL中与两个查询建立了联合

SELECT account_number,SUM(amount_settled)    
  FROM table W
 WHERE account_number= &acc
   AND Component = 'PROFIT_1'
 GROUP BY account_number
 UNION 
SELECT account_number,SUM(amount)  
  FROM table S
 WHERE account_number=  &acc
   AND amount_tag= 'PROFIT_2' 
 GROUP BY account_number 
 ORDER BY account_number 

我在结果集中获得的价值要比另一个低

SUM(AMOUNT_SETTLED)
1   36260.16
2   36342.16

我想在另一行旁边显示

SUM(AMOUNT_SETTLED)       SUM(E.AMOUNT)
36260.16                  36342.16

如何在Oracle中使用两个不同的表来实现这一点

解决方法

这似乎是您当前的情况（没有包含替换变量的行）：

SELECT account_number,SUM(amount_settled)    
  FROM table1 t1
 WHERE component = 'PROFIT_1'
 GROUP BY account_number
 UNION 
SELECT account_number,SUM(amount)  
  FROM table2 t2
 WHERE amount_tag= 'PROFIT_2' 
 GROUP BY account_number   

，您可能需要通过使用条件聚合从每个表分别派生的子查询中使用CROSS JOIN：

SELECT sum_amount_settled,sum_amount
  FROM ( SELECT SUM(CASE WHEN component = 'PROFIT_1' THEN amount_settled END) AS sum_amount_settled   
           FROM table1) 
 CROSS JOIN ( SELECT SUM(CASE WHEN amount_tag = 'PROFIT_2' THEN amount END) AS sum_amount  
                FROM table2)   

Demo