如何为这个场景编写 SP？答案

【问题标题】：How to write SP for this SCENARIO?如何为这个场景编写 SP？
【发布时间】：2011-06-01 15:09:41
【问题描述】：

我在数据库中有一个这样的表

SlNo
Driver_Id
Sun_StartTime
Sun_EndTime
Mon_StartTime
Mon_EndTime
Tue_StartTime
Tue_EndTime 
Wed_StartTime
Wed_EndTime
Thur_StartTime
Thur_EndTime
Fri_StartTime
Fri_EndTime
Sat_StartTime
Sat_EndTime

以上是我数据库中的字段

但是在检索时我必须像那样检索

Driver_Id | Sun_StartTime  | Sun_EndTime
Driver_Id | Mon_StartTime  | Mon_EndTime
Driver_Id | Tue_StartTime  | Tue_EndTime
Driver_Id | Wed_StartTime  | Wed_EndTime
Driver_Id | Thur_StartTime | Thur_EndTime
Driver_Id | Fri_StartTime  | Fri_EndTime
Driver_Id | Sat_StartTime  | Sat_EndTime

也就是说，我必须将一条记录拆分为 7 条记录我如何使用存储过程来做到这一点。请帮我提前致谢

【问题讨论】：

标签： asp.net sql-server-2005

【解决方案1】：

这样的事情应该会让你朝着正确的方向开始。

SELECT Driver_Id, Sun_StartTime AS StartTime, Sun_EndTime as EndTime, 1 AS DayOfWeek
    FROM YourTable
    WHERE Driver_Id = @YourDriverId
UNION ALL
SELECT Driver_Id, Mon_StartTime AS StartTime, Mon_EndTime as EndTime, 2 AS DayOfWeek
    FROM YourTable
    WHERE Driver_Id = @YourDriverId
UNION ALL
...
SELECT Driver_Id, Sat_StartTime AS StartTime, Sat_EndTime as EndTime, 7 AS DayOfWeek
    FROM YourTable
    WHERE Driver_Id = @YourDriverId
ORDER BY DayOfWeek

【讨论】：

【解决方案2】：

看看这个：http://wiki.lessthandot.com/index.php/Column_To_Row_%28UNPIVOT%29

【讨论】：

【解决方案3】：

您可以使用联合查询来获取此类结果。但是你没有提到 where 子句。

Create Proc testing
AS

Select
driverID, Mon_StartTime,Mon_EndTime From YourTableName

Union

Select
    driverID, Tue_EndTime, Tue_EndTime From YourTableName

Union

Select
    driverID, Wed_StartTime, Wed_EndTime From YourTableName

Union

Select
    driverID, Thur_StartTime, Thur_EndTime From YourTableName

Union

Select
    driverID, Fri_StartTime, Fri_EndTime From YourTableName

Union

Select
    driverID, Sat_StartTime, Sat_EndTime From YourTableName

Union 

    Select
    driverID, Sun_StartTime, Sun_EndTime From YourTableName

【讨论】：