具有GROUP BY和聚合函数的多个INNER JOIN

Question

我回来了另一个问题.我现在一直在修补这个1天半,但仍然没有运气.所以我有下表.

Table1
Field1 Field2 Field3 Field4     Field5
DR1    500    ID1    Active     TR1
DR2    250    ID2    Active     TR1
DR3    100    ID1    Active     TR1
DR4    50     ID3    Active     TR1
DR5    50     ID1    Cancelled  TR1
DR6    150    ID1    Active     TR2

Table2
Field1 Field3
ID1    Chris
ID2    John
ID3    Jane

Table3
Field1 Field2
TR1    Shipped  
TR2    Pending

我目前可以实现这个结果.

Name   Total
Chris  650    3
John   250    1
Jane   50     1

使用这个sql语句

SELECT t2.Field3 as Name , SUM(t1.Field2) as Total
 FROM [Table1] t1 INNER JOIN [Table2] t2 ON t1.Field3 = t2.Field1
  GROUP BY t2.Field3

但是,我想实现下面显示的结果.

Chris 600 2
John  250 1
Jane  50  1

我想首先查看Table3,如果它有一个'Shipped'Field2,那么它包含Table1中带有'Active'Field4的所有内容.它不应该包括'已取消'Field4.如果Table3有一个待定的Field2,它也应该不包括它.我很感激任何帮助.谢谢.

Answer 1

好吧,您只需要加入where子句中所需字段所需的所有表.

并添加一个where条款.

SELECT t2.Field3,
       SUM(t1.Field2) as CTotal,
       count(*) as NbItems
FROM Table1 t1 

INNER JOIN Table2 t2
       ON t1.Field3 = t2.Field1
--add a join on Table3
INNER JOIN Table3 t3 
       ON t3.Field1 = t1.Field5 
--add your where clause
WHERE t1.Field4 = 'Active'
AND t3.Field2 <> 'Pending'
GROUP BY t2.Field3
--ORDER BY CTotal DESC

看到SqlFiddle

编辑

为了你的问题

SELCT custInfo.CName, 
Count(*) as TransactionCount, 
SUM(CTotal) as TransactionTotal 
FROM (TamarawTransaction trans 
INNER JOIN TamarawCustomerInformation custInfo 
    ON trans.CCustomerCode=custInfo.CCustomerCode) 
INNER JOIN TamarawTrip  trip
    ON trans.CTrip=trip.CTrip 

Where trip.CStatus='Finalized' 
AND trans.CStatus='Active' 
GROUP BY custInfo.CName

使用"奇怪的访问连接语法"

SELECT TamarawCustomerInformation.CName, 
Count(*) AS TransactionCount, 
SUM(CTotal) AS TransactionTotal
FROM TamarawCustomerInformationn 
INNER JOIN (TamarawTrip INNER JOIN TamarawTransaction ON TamarawTrip.CTrip=TamarawTransaction.CTrip) 
          ON TamarawCustomerInformationn.CCustomerCode=TamarawTransaction.CCustomerCode
WHERE TamarawTrip.CStatus='" & "Shipped" & "' and TamarawTransaction.CStatus='" & "Active" & "'
GROUP BY TamarawCustomerInformation.CName;