如何在sql中透视临时表

Question

      Date             Time        Mode ID
    2017-01-01  13:00:00.0000000    3   10
    2017-01-01  14:00:00.0000000    1   10
    2017-01-01  15:00:00.0000000    3   10
    2017-01-01  15:30:00.0000000    1   10

这是一个临时表。我只想将时间列显示为 2 列，1 列模式 =3，其他列模式 =1。

这是一个临时表。我只想要下面的输出：

          Date         InTime(Mode-3)    OutTime(Mode-1)     ID

         2017-01-01   13:00:00.0000000  14:00:00.0000000    10

         2017-01-01   15:00:00.0000000  15:30:00.0000000    10

Answer 1

猜测您想要一种方法来创建具有固定值（1 和 3）的交替行。 你可以使用

ROW_NUMBER() 结束时的情况（按 [Date] 排序）%2 = 0 then 1 else 3

作为模式列的逻辑

Answer 2

试试这个，

DECLARE @TB TABLE (DATETIME VARCHAR(30),ID INT)
INSERT INTO @TB VALUES
('2017-01-01 13:00:00.0000000',10),
('2017-01-01 14:00:00.0000000',10),
('2017-01-01 15:00:00.0000000',10),
('2017-01-01 15:30:00.0000000',10 )

SELECT  SUBSTRING(DATETIME,0,11) DATE
        ,SUBSTRING(DATETIME,12,LEN(DATETIME)) TIME
        ,CASE WHEN ROW_NUMBER() OVER (ORDER BY DATETIME)%2 = 0 THEN 1 ELSE 3 END MODE
        ,ID
FROM    @TB

Answer 3

这取决于数据和数据类型/模式（如果表的名称是 timeTable）：

    SELECT DATE, time AS 'InTime(Mode-3)',
      (SELECT TOP 1 time FROM timeTable
          WHERE mode = 1 
            AND id = outerTable.id 
            AND date = outerTable.date 
            AND time > outerTable.time 
          ORDER BY date, time) AS 'OutTime(Mode-1)',
      ID
    FROM timeTable AS outerTable 
    WHERE mode = 3

• outerQuery 只选择in-times mode = 3
• innerQuery 选择下一个out-time，对应于选择的in-time，并且只返回第一个。由于按日期和时间排序，它应该是下一个。 仅使用您给定的数据进行测试

输出：

    Date       |  InTime(Mode-3)     |   OutTime(Mode-1)   |  ID
---------------|---------------------|---------------------|------
   2017-01-01  |  13:00:00.0000000   |  14:00:00.0000000   |  10
   2017-01-01  |  15:00:00.0000000   |  15:30:00.0000000   |  10

仅供参考：
我使用了这个表模式

 CREATE TABLE timeTable(
     date DATE,
     time TIME,
     mode INTEGER,
     id INTEGER
 );

更新：
有时差：

SELECT *, DATEDIFF(MINUTE,INTIME,OUTTIME) AS [DIFFERENCE] FROM (
    SELECT [DATE], [time] AS INTIME,
      (SELECT TOP 1 [time] FROM timeTable
          WHERE [mode] = 1 
            AND [id] = outerTable.id 
            AND [date] = outerTable.date 
            AND [time] > outerTable.time 
          ORDER BY [date], [time]) AS OUTTIME,
      [ID]
    FROM [timeTable] AS outerTable 
    WHERE [mode] = 3
) WholeData