我正在加入四个表来获取我需要的一些数据。表格和一些样本数据如下:
**TollTransaction table**
AccountId EntryTransDt LicPlateNo
1655024 24-05-2017 ABC123
1655024 24-05-2017 DEF123
1655024 24-05-2017 GHI123
1655024 24-05-2017 JKL123
1655024 24-05-2017 MNO123
**Plate table**
AccountId LicPlateNo EndDate
11001 ABC123 2012-06-10
1898884 ABC123 NULL
1981834 DEF123 NULL
14066 GHI123 NULL
1770746 JKL123 NULL
1005010 MNO123 NULL
**Account table**
AccountId AccountNumber CurrentBalance
11001 10110014 0
14066 10140668 0
1005010 20050108 0
1770746 27707463 3.9
1898884 28988847 0
1981834 29818345 0
**FinTransMaster table**
FinTransTypeCode BusinessDay AcctID
PYMT 03-02-2015 11001
PYMT 15-01-2015 11001
PYMT 11-12-2014 14066
PYMT 11-09-2014 14066
PYMT 01-04-2016 1005010
PYMT 02-10-2014 1005010
PYMT 15-09-2015 1770746
PYMT 30-11-2015 1898884
PYMT 21-10-2015 1898884
PYMT 23-03-2017 1981834
TollTransaction表中的AccountId对于这些牌照是相同的,因为这些牌照遵循一般标准。
我需要从Plate表中获取AccountIds,然后加入AccountIds上的Account表以获取AccountNumber。
我想做的事情:
1)我试图查找付款中有当前余额的帐户
2)付款的最后日期(来自FinTransMaster表的最大BusinessDay)
3)该LicPlateNo的TollTransaction表中的最后一个EntryTransDt。
我的代码如下:
SELECT A.AccountNumber
,A.CurrentBalance
,(SELECT MAX(BusinessDay) FROM FinTransMaster F WHERE A.AccountId = F.AcctID AND FinTransTypeCode = 'PYMT' GROUP BY AcctID) Last_Pymt_Date
,(SELECT MAX(EntryTransDt) FROM TollTransaction GROUP BY LicPlateNo) Last_Transaction
FROM TollTransaction T
INNER JOIN Plate P ON T.LicPlateNo = P.LicPlateNo
INNER JOIN Account A ON P.AccountId = A.AccountId
--INNER JOIN FinTransMaster F ON A.AccountId = F.AcctID
WHERE T.AccountId = '1655024'
AND P.EndDate IS NULL
AND A.CurrentBalance > 0
ORDER BY Last_Pymt_Date DESC, A.AccountNumber
我的代码在两个SELECT MAX()查询中是错误的。
我需要使用哪些代码来获取最后的日期?
修改 我使用了下面答案中建议的代码但得到的记录太多了。我使用的代码是:
SELECT A.AccountNumber
,A.CurrentBalance
--,(SELECT MAX(BusinessDay) FROM FinTransMaster F WHERE A.AccountId = F.AcctID AND FinTransTypeCode = 'PYMT' GROUP BY AcctID) Last_Pymt_Date
--,(SELECT MAX(EntryTransDt) FROM TollTransaction GROUP BY LicPlateNo) Last_Transaction
,MAX(F.BusinessDay) over(Partition by F.AcctID) as Last_Pymt_date
,MAX(T.EntryTransDt) over(Partition by T.LicPlateNo) as Last_Transaction
FROM TollTransaction T
INNER JOIN Plate P ON T.LicPlateNo = P.LicPlateNo
INNER JOIN Account A ON P.AccountId = A.AccountId
LEFT JOIN FinTransMaster F ON A.AccountId = F.AcctID
WHERE T.AccountId = '1655024'
AND P.EndDate IS NULL
AND A.CurrentBalance > 0
ORDER BY Last_Pymt_Date DESC, A.AccountNumber
但我的记录太多了。
我的TollTransactions表有多个同一LicPlateNo的记录。这就是我在JOIN之后得到多条记录的原因。如果我只能将Distinct T.LicPlateNo加入到其他表中,我应该获得单个记录。
答案 0 :(得分:0)
您可以尝试使用如下连接:
SELECT A.AccountNumber
,A.CurrentBalance
--,(SELECT MAX(BusinessDay) FROM FinTransMaster F WHERE A.AccountId = F.AcctID AND FinTransTypeCode = 'PYMT' GROUP BY AcctID) Last_Pymt_Date
--,(SELECT MAX(EntryTransDt) FROM TollTransaction GROUP BY LicPlateNo) Last_Transaction
,MAX(F.BusinessDay) over(Partition by F.AcctID) as Last_Pymt_date
,MAX(T.EntryTransDt) over(Partition by T.LicPlateNo) as Last_Transaction
FROM TollTransaction T
INNER JOIN Plate P ON T.LicPlateNo = P.LicPlateNo
INNER JOIN Account A ON P.AccountId = A.AccountId
LEFT JOIN FinTransMaster F ON A.AccountId = F.AcctID
WHERE T.AccountId = '1655024'
AND P.EndDate IS NULL
AND A.CurrentBalance > 0
ORDER BY Last_Pymt_Date DESC, A.AccountNumber