Question

我有5个想要加入的查询。基本上他们所做的就是通过数据库来选择租户支付了多少，以及租户根据他或她多久收费而欠多少钱。

我有四个类别费用＆lt; 30天大费用＆lt; 60 AND＆gt; = 30天旧
费用＆lt; 90 AND＆gt; = 60天旧
充电＆gt; 90天

我知道如何分别获得所有这些价值，但我怎样才能将它们合在一起，加上租户支付的金额？

以下是我的疑问：
承租人支付的金额

SELECT TransactionCode, TenantID, SUM(Amount) AS Paid FROM tblTransaction
WHERE Amount > 0
GROUP BY TransactionCode, TenantID

费用不到30天

SELECT TransactionCode, TenantID, SUM(Amount) AS ChargedCurrent FROM tblTransaction
WHERE Amount < 0 AND TransactionDate > DATEADD("dd", -30, GETDATE())
GROUP BY TransactionCode, TenantID

费用不到60天，但超过29天

SELECT TransactionCode, TenantID, SUM(Amount) AS ChargedOver30 FROM tblTransaction
WHERE Amount < 0 AND TransactionDate > DATEADD("dd", -60, GETDATE()) AND TransactionDate <= DATEADD("dd", -30, GETDATE())
GROUP BY TransactionCode, TenantID

费用不到90天，但超过59天

SELECT TransactionCode, TenantID, SUM(Amount) AS ChargedOver60 FROM tblTransaction
WHERE Amount < 0 AND TransactionDate > DATEADD("dd", -90, GETDATE()) AND TransactionDate <= DATEADD("dd", -60, GETDATE())
GROUP BY TransactionCode, TenantID

费用超过89天

SELECT TransactionCode, TenantID, SUM(Amount) AS ChargedOver90 FROM tblTransaction
WHERE Amount < 0 AND TransactionDate <= DATEADD("dd", -90, GETDATE())
GROUP BY TransactionCode, TenantID

如何通过一个查询获取所有这些内容？

Answer 1

可以这样做：

SELECT TransactionCode, TenantID, 
SUM(CASE WHEN Amount > 0 then Amount ELSE 0 END) AS Paid,
SUM(CASE WHEN Amount < 0 AND TransactionDate > DATEADD("dd", -30, GETDATE()) THEN Amount ELSE 0 END) AS ChargedCurrent,  
SUM(CASE WHEN Amount < 0 AND TransactionDate > DATEADD("dd", -60, GETDATE()) AND TransactionDate <= DATEADD("dd", -30, GETDATE()) THEN Amount ELSE 0 END) AS ChargedOver30
SUM(CASE WHEN Amount < 0 AND TransactionDate > DATEADD("dd", -90, GETDATE()) AND TransactionDate <= DATEADD("dd", -60, GETDATE()) then Amount Else 0 END) AS ChargedOver60,
SUM(CASE WHEN Amount < 0 AND TransactionDate <= DATEADD("dd", -90, GETDATE()) THEN Amount ELSE 0 END) AS ChargedOver90 
FROM tblTransaction
GROUP BY TransactionCode, TenantID

Answer 2

使用UNION将结果集拼接在一起会起作用。您可能希望使用PIVOT功能对其进行翻译，以将金额分配到单独的列中。对不起，我不能更具体，我没有笔记，我不知道这些东西的确切语法。

Answer 3

如果您可以在所有5个单独的查询中使查询的投影或形状相同，则可以使用联合不仅将查询组合成单个结果，还可以对结果进行排序。我修改了最后一列是一致的，并代表了从结果中过滤的费用状态：

SELECT TransactionCode, TenantID, SUM(Amount) [Amount], 'Paid' [Status]
FROM tblTransactionWHERE Amount > 0
GROUP BY TransactionCode, TenantID

union

SELECT TransactionCode, TenantID, SUM(Amount) [Amount], 'Charged Current' [Status]
FROM tblTransactionWHERE Amount < 0 AND TransactionDate > DATEADD("dd", -30, GETDATE())
GROUP BY TransactionCode, TenantID

union

SELECT TransactionCode, TenantID, SUM(Amount) [Amount], 'ChargedOver30' [Status]
FROM tblTransactionWHERE Amount < 0 AND TransactionDate > DATEADD("dd", -60, GETDATE()) AND TransactionDate <= DATEADD("dd", -30, GETDATE())
GROUP BY TransactionCode, TenantID

union

SELECT TransactionCode, TenantID, SUM(Amount) [Amount], 'ChargedOver60' [Status]
FROM tblTransactionWHERE Amount < 0 AND TransactionDate > DATEADD("dd", -90, GETDATE()) AND TransactionDate <= DATEADD("dd", -60, GETDATE())
GROUP BY TransactionCode, TenantID

union

SELECT TransactionCode, TenantID, SUM(Amount) [Amount], 'ChargedOver90' [Status]
FROM tblTransactionWHERE Amount < 0 AND TransactionDate <= DATEADD("dd", -90, GETDATE())
GROUP BY TransactionCode, TenantID

order by 4 --Status

Answer 4

此交叉表查询应该有效：

SELECT 
Case WHEN Amount > 0 Then Amount Else 0 End as [Total],
Case WHEN Amount < 0 AND TransactionDate > DATEADD("dd", -30, GETDATE())
    Then Amount Else 0 End as [Charge 0-29 Days],
Case WHEN Amount < 0 AND TransactionDate > DATEADD("dd", -60, GETDATE()) AND TransactionDate <= DATEADD("dd", -30, GETDATE()) 
    Then Amount Else 0 End as [Charge 30-59 Days],
Case WHEN Amount < 0 AND TransactionDate > DATEADD("dd", -90, GETDATE()) AND TransactionDate <= DATEADD("dd", -60, GETDATE()) 
    Then Amount Else 0 End as [Charge 60-89 Days],
Case WHEN Amount < 0 AND TransactionDate <= DATEADD("dd", -90, GETDATE())
     Then Amount Else 0 End as [Charge 90+ Days],

FROM tblTransaction GROUP BY TransactionCode，TenantID

Answer 5

为每个查询添加一个额外的列

SELECT TransactionCode，TenantID，SUM（Amount）AS ChargedCurrent，30 as [DaysLate] FROM tblTransaction ...

然后UNION所有查询一起

如何组合这些查询？

5 个答案: