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我需要在 MySQL 中为此查询创建 JOIN 语法：

SELECT 
    TblSupplier.SupplierName AS SupplierName, 
    (SUM(TblBuy.TotalBuy) - SUM(TblReturn.TotalReturn)) AS Total 
    (SUM(TblPayment.TotalPaymentToday) - SUM(TblReturnItem.TotalReturnToday)) AS TotalPayment, 
    ((SUM(TblBuy.TotalBuy) - SUM(TblReturn.TotalReturn)) - (SUM(TblPayment.TotalPaymentToday) - SUM(TblReturnItem.TotalReturnToday))) AS Balance 
FROM ... 
GROUP BY TblSupplier.ID

但我不知道该怎么做...

这是我的 ER 图

我的问题示例：

INSERT INTO TableSupplier (ID, SupplierName) VALUES (1, 'Company A'), (2, 'Company B');

插入 TableBuy（ID、SupplierID、TotalBuy）值 (1, 1, 100), (2, 1, 200), (3, 2, 50), (4, 2, 100), (5, 2, 50) ;

插入 TablePayment（ID、BuyID、TotalPaymentToday）值（1、1、50）、（2、3、50）；

INSERT INTO TableReturn (ID, SupplierID, TotalReturn) VALUES (1, 1, 20), (2, 2, 30), (3, 2, 10);

INSERT INTO TableReturnItem (ID, ReturnID, TotalReturnToday) VALUES (1, 1, 10), (2, 2, 30);

我按照这个例子，我得到了这个结果：

mysql> select
-> ts.SupplierName AS SupplierName,
-> (SUM(tb.TotalBuy) - SUM(tr.TotalReturn)) AS Total,
-> (SUM(tp.TotalPaymentToday) - SUM(tri.TotalReturnToday)) 作为 TotalPayment ,
-> ((SUM(tb.TotalBuy) - SUM(tr.TotalReturn)) -
-> (SUM(tp.TotalPaymentToday) - SUM(tri.TotalReturnToday))) AS Balance
-> from tablesupplier ts
-> 内部连接 ​​tablebuy ts.id=tb.id 上的 tb
-> ts.id=tr.id 上的内连接 tablereturn tr
-> ts.id=tp.id 上的内连接 tablepayment tp
-> ts.id=tri 上的内连接 tablereturnitem tri。 id
-> 按 ts.id 分组；

供应商名称 | 总计 | 总付款 | 平衡
-------------------------------------------------
公司一个 | 80 | 40 | 40
B 公司 | 170 | 20 | 150

我想要的结果是：

供应商名称 | 总计 | 总付款 | 余额
------------------------------------------------
A公司| 280 | 40 | 240
B 公司 | 160 | 20 | 140

4

1 回答 1

0

尝试这个 ：

select 
ts.SupplierName AS SupplierName, 
(SUM(tb.TotalBuy) - SUM(tr.TotalReturn)) AS Total 
(SUM(tp.TotalPaymentToday) - SUM(tri.TotalReturnToday)) AS TotalPayment, 
((SUM(tb.TotalBuy) - SUM(tr.TotalReturn)) - 
(SUM(tp.TotalPaymentToday) -     SUM(tri.TotalReturnToday))) AS Balance 
from tablesupplier ts
inner join tablebuy tb on ts.id=tb.supplierid
inner join tablereturn tr on ts.id=tr.supplierid
inner join tablepayment tp on tb.id=tp.buyid
inner join tablereturnitem tri on tr.id=tri.returnid
group by ts.id
于 2013-07-05T01:35:12.097 回答