根据金额总和加入

如何解决根据金额总和加入

基本上有2个文件

文件 1 示例

参考	金额
AA1	1000

文件 2 示例

参考	Match_No	侧面	金额
AA1	123	账本	1000
BB1	123	声明	500
CC1	123	声明	500

现在要求使用来自文件 1 的引用，从文件 2 中提取 Match_No，其中 side = 'Ledger'

我认为这个脚本应该是：-
选择 file2.match_no
从 file1 加入 file2 on file1.reference = file2.reference
其中边 = '分类帐'

现在在提取 Match_No where side = Ledger 之后，对于相同的 Match_No，从文件 2 中提取所有引用 where side ='Statement' 和 file2.amounts 的总和（where side='Statement'）= file2.amount（where side = 分类帐）

解决方法

我就是这么理解你说的。看看是否有帮助。

SQL> with
  2  -- Sample data; you have it already & don't type it
  3  file_1 (reference,amount) as
  4    (select 'aa1',1000 from dual),5  file_2 (reference,match_no,side,amount) as
  6    (select 'aa1',123,'Ledger',1000 from dual union all
  7     select 'bb1','Statement',500 from dual union all
  8     select 'cc1',500 from dual
  9    ),10  -- Useful code begins here.
 11  -- Query you posted (I added "B.AMOUNT" and used it in line #21)
 12  qyp as
 13    (select b.match_no,b.amount
 14     from file_1 a join file_2 b on a.reference = b.reference
 15     where b.side = 'Ledger'
 16    )
 17  -- The final query
 18  select b.reference
 19  from file_2 b join qyp q on q.match_no = b.match_no
 20  where b.side = 'Statement'
 21    and q.amount = (select sum(c.amount)
 22                    from file_2 c
 23                    where c.match_no = b.match_no
 24                      and c.side = 'Statement'
 25                   );

REF
---
cc1
bb1

SQL>