Question

我正在尝试使用an example from Microsoft创建带有CASE语句的计算列。

我将不胜感激任何帮助或指示!!

相关的示例代码是：

SELECT   
    ProductNumber, Category =  
      CASE ProductLine  
         WHEN 'R' THEN 'Road'  
         WHEN 'M' THEN 'Mountain'  
         WHEN 'T' THEN 'Touring'  
         WHEN 'S' THEN 'Other sale items'  
         ELSE 'Not for sale'  
    END,  
    Name  
FROM 
    Production.Product  
ORDER BY 
    ProductNumber;  
GO

我认为＆＃39;我在下面做同样的事情：

SELECT 
    Convert ( char(10),"") No,   
    Convert ( char(15),"") vendor,   
    car_type.car_type_desc,
    origin_st = 
        case voucher.pu_is_airport
            when 'F' then Convert( char(50),  rtrim(ltrim(operator_archive.pu_st_no)) + " " + rtrim(ltrim(operator_archive.pu_st_name)) )  
            else Convert( char(50), "")  
            end
        origin = 
        case voucher.pu_is_airport
            when 'F' then Convert( char(50),  rtrim(ltrim(operator_archive.pu_city)) + ", " + rtrim(ltrim(operator_archive.pu_county)))  
            else Convert( char(50),  rtrim(ltrim(operator_archive.pu_county))  
            end
         voucher.confirmation_no,   
         voucher.pu_is_airport,   
         operator_archive.dest_st_name  
FROM 
    voucher,   
    car_type,   
    operator_archive  
WHERE 
    (voucher.car_type = car_type.car_type_id) and  
    (operator_archive.confirmation_no = voucher.confirmation_no) and  
    ((dbo.voucher.pu_date_time >= :start_date) AND  
     (dbo.voucher.pu_date_time <= :end_date) AND  
     (dbo.voucher.account_no = :account) AND  
     (dbo.voucher.status_flag not in ('9','X','C','F')) AND  
    (dbo.voucher.payment_type in ('1','2','3','4','5','6','7','8')))

但是服务器告诉我有一个错误：

SQLSTATE = 37000
[Microsoft] [ODBC SQL Server驱动程序] [SQL Server]＆origin;＆＃39;附近的语法不正确。

我在“结束”之后用逗号尝试过它。然后我收到一个错误说明：

SQLSTATE = 37000
[Microsoft] [ODBC SQL Server驱动程序] [SQL Server]＆＃39; end＆＃39;附近的语法不正确。

Answer 1

感谢Lamak的评论，我能够通过在＆＃39; end＆＃39;之后添加一个缺少的括号和逗号来解决这个问题。声明。谢谢喇嘛！

SQL Server 2008上的PowerBuilder SQL - SELECT中带有计算列的CASE语句

1 个答案: