SQL Server（2008）与汇总的联合

我有一个费用报告应用程序，它将费用和账号收集到一个表中，但给定的费用可以拆分为一部分计入一个总账账户，其余部分计入另一个账户。为了适应成本拆分，费用表有两对金额和账号列，供数据输入过程使用。像这样：

create table Expenses (expheaderid int, explineid int, amount_split1 decimal(5,2), 
account int, amount_split2 decimal(5,2), account2 int);
insert Expenses values (57, 11, 47.35, 80400, 0, 0);
insert Expenses values (57, 12, 163.31, 80440, 0, 0);
insert Expenses values (57, 13, 30, 80401, 5.90, 70410);
insert Expenses values (57, 14, 35, 80440, 0, 0);
insert Expenses values (57, 15, 45.15, 80440, 0, 0);
insert Expenses values (57, 16, 145.87, 80400, 68.14, 80400);
insert Expenses values (57, 17, 67.35, 80870, 0, 0);
insert Expenses values (57, 18, 105, 80402, 34.50, 80440);

我需要汇总（分组）来自相同账户代码的金额，但汇总必须发生在两对金额和账户编号列之间（金额拆分1和账户）第一对或（金额拆分2和账户2）第二列对。所以我的桌子看起来像这样：

expheaderid explineid amount_split1 account amount_split2 account2
----------- --------- ------------- ------- ------------- --------
         57        11         47.35   80400           0.00       0 
         57        12        163.31   80440           0.00       0
         57        13         30.00   80401           5.90   70410
         57        14         35.00   80440           0.00       0
         57        15         45.15   80440           0.00       0
         57        16        145.87   80400          68.14   80400
         57        17         67.35   80870              0       0
         57        18        105.00   80402          34.50   80440

select sum(AggTotal), GLAccount from 
((select amount_split1 as AggTotal, account as GLAccount from Expenses)
union all 
(select amount_split2 as AggTotal, account2 as GLAccount from Expenses))as t 
where Expenses.expheaderid=57 group by GLAccount;

我想将金额_split1成本与金额_split2成本合并，按账号分组

结果应如下所示，从“科目”列和“科目2”列中的总账科目中收集

AggTotal  GLAccount
--------  ---------
   261.36     80400
    30.00     80401
   105.00     80402
   277.96     80440
    67.35     80470
and probably...
     0.00         0   -which I don't care about.

我根本不擅长复合查询。我试图用这样一句话来表示联合和分组：

expheaderid explineid amount_split1 account amount_split2 account2
----------- --------- ------------- ------- ------------- --------
         57        11         47.35   80400           0.00       0 
         57        12        163.31   80440           0.00       0
         57        13         30.00   80401           5.90   70410
         57        14         35.00   80440           0.00       0
         57        15         45.15   80440           0.00       0
         57        16        145.87   80400          68.14   80400
         57        17         67.35   80870              0       0
         57        18        105.00   80402          34.50   80440

select sum(AggTotal), GLAccount from 
((select amount_split1 as AggTotal, account as GLAccount from Expenses)
union all 
(select amount_split2 as AggTotal, account2 as GLAccount from Expenses))as t 
where Expenses.expheaderid=57 group by GLAccount;

但是expheaderid列将不会绑定。此数据是较大数据集的一部分，因此expheaderid上的WHERE子句必须起作用

---

谢谢你的帮助。

你有试过部分地做吗。 试试这种CTE

WITH C AS(
    (select amount_split1 as AggTotal, account as GLAccount,expheaderid from Expenses)
    union all 
    (select amount_split2 as AggTotal, account2 as GLAccount,expheaderid from Expenses) 
)SELECT  sum(AggTotal) AS SUMAVGTOTAL, GLAccount  
FROM C
WHERE expheaderid=57
GROUP BY GLAccount

   select sum(AggTotal), GLAccount from 
    ((select amount_split1 as AggTotal, account as GLAccount from Expenses   where expheaderid=57)
    union all 
    (select amount_split2 as AggTotal, account2 as GLAccount from Expenses where expheaderid=57))as t 
     group by GLAccount;

还是这个

WITH C AS(
    (select amount_split1 as AggTotal, account as GLAccount,expheaderid from Expenses)
    union all 
    (select amount_split2 as AggTotal, account2 as GLAccount,expheaderid from Expenses) 
)SELECT  sum(AggTotal) AS SUMAVGTOTAL, GLAccount  
FROM C
WHERE expheaderid=57
GROUP BY GLAccount

   select sum(AggTotal), GLAccount from 
    ((select amount_split1 as AggTotal, account as GLAccount from Expenses   where expheaderid=57)
    union all 
    (select amount_split2 as AggTotal, account2 as GLAccount from Expenses where expheaderid=57))as t 
     group by GLAccount;

将expheaderid=57添加到联合体的每个部分

同样，你也可以用一个诱人的方法来做同样的事情。

---

如果它不起作用，请告诉我您可以尝试在子查询中

合并所有

，然后添加

expheaderid

列，因为您需要在子查询final do

SUM

中的

位置使用它

查询1：

SELECT SUM(AggTotal) AggTotal,GLAccount
FROM (
  select amount_split1 as AggTotal, 
         account as GLAccount,
         expheaderid  --  <-- add this column
  from Expenses
  union all 
  select 
      amount_split2 as AggTotal, 
      account2 as GLAccount ,
      expheaderid
  from Expenses
) t1
where expheaderid = 57
GROUP BY GLAccount

| AggTotal | GLAccount |
|----------|-----------|
|        0 |         0 |
|      5.9 |     70410 |
|   261.36 |     80400 |
|       30 |     80401 |
|      105 |     80402 |
|   277.96 |     80440 |
|    67.35 |     80870 |

至于为什么它不会绑定：您的from子句由1个表
t
组成，因此当where子句执行时，它不知道
Expenses
表。另外，表
t
没有
expheaderid
列；因此，即使我们做了
t.expheaderid
，也不会找到它。那么，您希望SQL引擎在哪里找到
费用。expheaderid
？可以将其包含在带有联合的选择中，也可以在选择中单独按其过滤。