SQL存储桶确定年龄分组

我有一个包含遗留数据的数据库，存储交易，并使用“bucket”方法确定账户余额。我需要一种方法来让我的账户过期

表事务处理
事务ID
交易类型（费用、收据）
金额
过期

要获取当前余额，请执行以下操作：

SELECT SUM(CASE TransactionTypeId WHEN RECEIPT THEN Amount * -1 ELSE Amount END) CurrentBalance 选择SUM（接收时案例交易类型ID，然后选择Amount*-1，否则为Amount END）CurrentBalance 我需要一种方法来确定过期30、60、90、120等：

账户活期30 60 90 120+
12345$50.00$0.00$25.00$25.00$0.00

我尝试运行单独的查询，并将收费后发日期限制在30,60,90120以上，为每个组运行并减去其他组，等等，但无法得到预期的结果

该表不存储过期标志，所有余额都是动态计算的

我错过了一些简单的东西吗？我尝试了网络搜索，但不确定是否有用于这种sql查询的术语

如果有帮助的话，数据库就是SQL Server

---

TIA

您可以在

案例中使用附加条款来过滤过去30天的交易。例如：

SELECT 
    SUM(
        CASE WHEN TransactionTypeId = 'RECEIPT' THEN -Amount 
             ELSE Amount 
    END) as CurrentDue
,   SUM(CASE WHEN datediff(d,PostDate,getdate()) <= 30 THEN 0
             WHEN TransactionTypeId = 'RECEIPT' THEN -Amount 
             ELSE Amount 
    END) as PastDue30
,   ...
FROM Transactions

这就是我最终得到的，我以前得到的东西，但没有检查到期金额为零的时间，也没有检查前一组是否有负值。我不得不加上它们，因为我得到了奇怪的结果，比如说，如果该账户的服务费用过高，那么之前的一段时间的到期日将为负数

SELECT
ServiceId,
AmountDue PastDue,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue60 &lt; 0 THEN 0 ELSE AmountDue30 - AmountDue60 END END PastDue30,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue90 &lt; 0 THEN 0 ELSE AmountDue60 - AmountDue90 END END PastDue60,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue120 &lt; 0 THEN 0 ELSE AmountDue90 - AmountDue120 END END PastDue90,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue120 &lt; 0 THEN 0 ELSE AmountDue120 END END PastDue120
FROM
(
    SELECT T.ServiceId,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN T.TAmount ELSE 0 END) AmountDue,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;=  30 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue30,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;=  60 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue60,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;=  90 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue90,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;= 120 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue120
    FROM Transactions T
    WHERE T.AccountId = @AccountId
    GROUP BY T.ServiceId
) AB

@Andomar-最近（即过去30天内）收到的收据应从过去30天的金额中减去-可能不包括过去30天内的费用马丁·克莱顿：那么“过期”真的是从30天起尚未支付的费用吗？在SQL中，可以通过交换
when
子句来计算。我会把它添加到答案中，我想是的，很好的解决方案，+1。
SELECT
ServiceId,
AmountDue PastDue,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue60 &lt; 0 THEN 0 ELSE AmountDue30 - AmountDue60 END END PastDue30,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue90 &lt; 0 THEN 0 ELSE AmountDue60 - AmountDue90 END END PastDue60,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue120 &lt; 0 THEN 0 ELSE AmountDue90 - AmountDue120 END END PastDue90,
CASE AmountDue WHEN 0 THEN 0 ELSE CASE WHEN AmountDue120 &lt; 0 THEN 0 ELSE AmountDue120 END END PastDue120
FROM
(
    SELECT T.ServiceId,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN T.TAmount ELSE 0 END) AmountDue,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;=  30 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue30,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;=  60 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue60,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;=  90 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue90,
    SUM(CASE WHEN T.TransactionTypeId = @Receipt THEN T.TAmount * -1 WHEN T.TransactionTypeId = @Charge THEN CASE WHEN DATEDIFF(D, T.TPostDate, @TPostDate) &gt;= 120 THEN T.TAmount ELSE 0 END ELSE 0 END) AmountDue120
    FROM Transactions T
    WHERE T.AccountId = @AccountId
    GROUP BY T.ServiceId
) AB