Question

在我的应用程序中，我有一个值存储为布尔值。在网格视图中显示时，如何将布尔值更改为文本。

我有这个sql

SELECT     Driver.FirstName + Driver.LastName AS DriverName, Driver.PhoneNumber, 
           Booking.BookingId, Booking.DriverRating, Driver.CarId AS CarUsed 
FROM       Booking 
INNER JOIN Driver ON Booking.DriverId = Driver.DriverId 
WHERE      Booking.DriverRating = 0

我正在检索所有驱动程序评级，即false（0）。现在当我将它显示到网格视图时，我想将布尔值false更改为不满意。

我如何在sql查询中执行此操作？

Answer 1

Booking.DriverRating - ＆gt;案例Booking.DriverRating为0然后'不满意'否则'满意'结束为'Booking.DriverRating'

Answer 2

如何从服务器检索它作为字符串开始？

例如

SELECT Driver.FirstName + Driver.LastName AS DriverName, Driver.PhoneNumber, Booking.BookingId,
 Case Booking.DriverRating When 0 then 'Unsatisfactory' else 'Satisfactory' end as DriverRating,   
Driver.CarId AS CarUsed 
FROM Booking 
INNER JOIN Driver ON Booking.DriverId = Driver.DriverId 
WHERE (Booking.DriverRating = 0)

或者在你的情况下，因为你已经在使用where子句：

SELECT Driver.FirstName + Driver.LastName AS DriverName, Driver.PhoneNumber, Booking.BookingId, 
    'Unsatisfactory' as DriverRating,
    Driver.CarId AS CarUsed 
FROM Booking INNER JOIN Driver ON Booking.DriverId = Driver.DriverId 
WHERE (Booking.DriverRating = 0)

将布尔值检索为文本

2 个答案: