Question

我的语法不正确：

  SELECT  
         BA.Bank,
         BA.AccountNo, 
         BA.closingBalance, 
         BT.TransactionDate =(Case When ClosingBalance <= 0 Then Getdate()
                                   Else TransactionDate
                              End),
         BankaccountID
  FROM BankTransactionDetail BT Right Join dbo.BankAccount BA  ON 
       BT.AccountID = BA.AccountID

获取错误：'='附近的语法不正确。

注意：没有加入其工作正常。 Plaese帮助。

Answer 1

你想要这个

SELECT BK.BankCode, 
         BA.Bank,
         BA.AccountNo, 
         BA.closingBalance, 
         Case When BA.ClosingBalance <= 0 Then Getdate() Else BT.TransactionDate End,
         BankaccountID
FROM BankTransactionDetail BT Right Join dbo.BankAccount BA  ON BT.AccountID = BA.AccountID

或

试试这个

  SELECT BA.Bank,
         BA.AccountNo, 
         BA.closingBalance, 
         TransactionDate =(Case When ClosingBalance <= 0 Then Getdate() Else TransactionDate End),
         BankaccountID
  FROM BankTransactionDetail BT Right Join dbo.BankAccount BA  ON BT.AccountID = BA.AccountID

Answer 2

定义别名列时不要使用表后缀。在您的情况下，您要获取＆＃39; TransactionDate＆＃39; 列，并尝试使用 BT 作为前缀。在您添加前缀的那一刻，SQL Server将尝试从BT表中读取该列，并且它认为您将派生列分配给现有列。只需删除BT前缀，它应该适合您。

 SELECT BK.BankCode, 
             BA.Bank,
             BA.AccountNo, 
             BA.closingBalance, 
             TransactionDate =(Case When ClosingBalance <= 0 Then Getdate()
                                       Else TransactionDate
                                  End),
             BankaccountID
      FROM BankTransactionDetail BT Right Join dbo.BankAccount BA  ON 
           BT.AccountID = BA.AccountID

Answer 3

使用此：

SELECT  
     BA.Bank,
     BA.AccountNo, 
     BA.closingBalance, 
     (CASE WHEN ClosingBalance <= 0 THEN GETDATE()
           ELSE TransactionDate
           END) AS TransactionDate,
      BankaccountID
FROM  BankTransactionDetail BT Right Join dbo.BankAccount BA  ON 
      BT.AccountID = BA.AccountID

如何使用SQL连接与大小写

3 个答案: