来自两个联接表的SQL条件和

我有两个表格如下：

发票

细部

我希望得到以下输出，但我的查询将只提供John的白银和黄金总数。我如何构建一个查询，该查询还将包括John的发票总额

约翰的发票总金额=70 银总重量=7 黄金总重量=5

试试这个：

对于Sql Server：

SELECT 
SUM(TotalAmount) AS TotalAmount,
SUM(TotGold) AS TotGold,
SUM(TotSilver) AS TotSilver
FROM(
SELECT
SUM (I.Amount) OVER (Partition by D.Invid) AS TotalAmount,
SUM(CASE WHEN D.MetalType='Gold' THEN D.Weight ELSE 0 END) AS TotGold,
SUM(CASE WHEN D.MetalType='Silver' THEN D.Weight ELSE 0 END) AS TotSilver
FROM Invoice I INNER JOIN Detail D ON I.InvId = D.InvId

WHERE I.Name = 'John'
GROUP BY D.InvId, I.Amount) n

这是一个-现在它杀死重复的细节，并只计算一次

编辑以供访问：

SELECT
  n.Name,
  MAX(TotalAmount),
  SUM(TotGold) AS TotGold,
  SUM(TotSilver) AS TotSilver
FROM(
  SELECT
   I.Name,
   SUM(CASE WHEN D.MetalType='Gold' THEN D.Weight ELSE 0 END) AS TotGold,
   SUM(CASE WHEN D.MetalType='Silver' THEN D.Weight ELSE 0 END) AS TotSilver
  FROM Invoice I 
  INNER JOIN Detail D ON I.InvId = D.InvId
  GROUP BY I.Name, D.InvId, I.Amount) n
INNER JOIN (
   SELECT
     I.Name, SUM (I.Amount) AS TotalAmount
    FROM Invoice I
    GROUP BY I.Name) m ON m.Name = n.Name
GROUP BY n.Name

试试这个：

With tbl3 (Amt,Gold,Silver)
as
(
    SELECT
    SUM (I.Amount) OVER (Partition by D.Invid) AS TotalAmount,
    SUM(CASE WHEN D.MetalType='Gold' THEN D.Weight ELSE 0 END) AS TotGold,
    SUM(CASE WHEN D.MetalType='Silver' THEN D.Weight ELSE 0 END) AS TotSilver
    FROM Invoice I Right JOIN Detail D ON I.InvId = D.InvId 
    WHERE I.Name = 'John' Group by D.InvId, I.Amount
)
Select SUM(Amt) as Total_Invoice_Amount_For_John,
SUM(Gold) as Total_Silver_Weight,
SUM(Silver) as Total_Gold_Width from tbl3

---

我还没有尝试过其他已经发布的查询，它们可能已经适合您的需求，但以下是我的看法：-

SELECT X.NAME, X.METALTYPE, X.WEIGHT, Y.TOTAL
FROM
    (SELECT NAME, METALTYPE, SUM(Weight) AS WEIGHT
    FROM INVOICE i
    INNER JOIN DETAIL d ON i.InvId = d.InvId
    GROUP BY NAME, METALTYPE) X
INNER JOIN
    (SELECT SUM(AMOUNT) AS Total, NAME
    FROM INVOICE
    GROUP BY NAME)Y
    ON X.NAME = Y.NAME
ORDER BY NAME, TOTAL, METALTYPE

---

选择名称，sumAmount为“总发票”，sumGold为“黄金”，sumSilver为Silver from 选择aa.名称，aa.金额， sumcase当bb.MetalType='Gold'然后bb.Weight else 0结束为'Gold'， 当bb.MetalType='Silver'然后bb.Weight else 0结束为'Silver'时的sumcase

---

从aa左外侧加入aa上的bb.InvID=bb.InvID group by aa.InvID as c group by c.name

@JohnWoo:因为有两个不同的人：John和Mike，第一个详细的条目是2的一部分。这不是给约翰的，而是给迈克的。所以John只有5金和3+4银，Mike只有2金。您的解决方案与MS SQL Server配合使用，但我使用的是MS Access。是否有其他方法可以构建查询而不使用D.Invid的过分区。谢谢。很抱歉，您为您的问题定义了SQL Server。我将其更新为AccessThank you先生，您必须是SQL专家，如果我想要所有发票的总金额、黄金总重量和白银总重量如何。如果您的意思是，对于所有客户，而不仅仅是John，那么下面是一个示例：

SELECT
  n.Name,
  MAX(TotalAmount),
  SUM(TotGold) AS TotGold,
  SUM(TotSilver) AS TotSilver
FROM(
  SELECT
   I.Name,
   SUM(CASE WHEN D.MetalType='Gold' THEN D.Weight ELSE 0 END) AS TotGold,
   SUM(CASE WHEN D.MetalType='Silver' THEN D.Weight ELSE 0 END) AS TotSilver
  FROM Invoice I 
  INNER JOIN Detail D ON I.InvId = D.InvId
  GROUP BY I.Name, D.InvId, I.Amount) n
INNER JOIN (
   SELECT
     I.Name, SUM (I.Amount) AS TotalAmount
    FROM Invoice I
    GROUP BY I.Name) m ON m.Name = n.Name
GROUP BY n.Name

With tbl3 (Amt,Gold,Silver)
as
(
    SELECT
    SUM (I.Amount) OVER (Partition by D.Invid) AS TotalAmount,
    SUM(CASE WHEN D.MetalType='Gold' THEN D.Weight ELSE 0 END) AS TotGold,
    SUM(CASE WHEN D.MetalType='Silver' THEN D.Weight ELSE 0 END) AS TotSilver
    FROM Invoice I Right JOIN Detail D ON I.InvId = D.InvId 
    WHERE I.Name = 'John' Group by D.InvId, I.Amount
)
Select SUM(Amt) as Total_Invoice_Amount_For_John,
SUM(Gold) as Total_Silver_Weight,
SUM(Silver) as Total_Gold_Width from tbl3

SELECT X.NAME, X.METALTYPE, X.WEIGHT, Y.TOTAL
FROM
    (SELECT NAME, METALTYPE, SUM(Weight) AS WEIGHT
    FROM INVOICE i
    INNER JOIN DETAIL d ON i.InvId = d.InvId
    GROUP BY NAME, METALTYPE) X
INNER JOIN
    (SELECT SUM(AMOUNT) AS Total, NAME
    FROM INVOICE
    GROUP BY NAME)Y
    ON X.NAME = Y.NAME
ORDER BY NAME, TOTAL, METALTYPE