Question

我的表数据就像这样..

ID         Name       Date                     Time       Type

 1         aaa      2014-07-01 00:00:00:000    9:35:43     In
 1         aaa      2014-07-01 00:00:00:000    11:10:43    OUT
 1         aaa      2014-07-01 00:00:00:000    11:35:43    In
 1         aaa      2014-07-01 00:00:00:000    1:00:43     OUT
 1         aaa      2014-07-01 00:00:00:000    1:35:43     In
 1         aaa      2014-07-01 00:00:00:000    4:00:43     OUT
 1         aaa      2014-07-01 00:00:00:000    4:10:43     In        
 1         aaa      2014-07-01 00:00:00:000    6:35:43     OUT

 2         Baa      2014-07-01 00:00:00:000    9:35:43     In
 2         Baa      2014-07-01 00:00:00:000    11:10:43    OUT
 2         Baa      2014-07-01 00:00:00:000    11:35:43    In
 2         Baa      2014-07-01 00:00:00:000    1:00:43     OUT
 2         Baa      2014-07-01 00:00:00:000    1:35:43     In
 2         Baa      2014-07-01 00:00:00:000    4:00:43     OUT
 2         Baa      2014-07-01 00:00:00:000    4:10:43     In        
 2         Baa      2014-07-01 00:00:00:000    6:35:43     OUT

现在我想只获得第一个并且最后使用sql从表中获取detalis。我该怎么办请帮助我

Answer 1

;WITH LoginCTE AS
(
    SELECT ID,
           Date,
           MIN(Time) AS MinLogin
    FROM   Table
    WHERE  Type = 'In'
    GROUP BY ID,
             Date
),LogoutCTE AS
(
    SELECT ID,
           Date,
           MAX(Time) AS MaxLogout
    FROM   Table
    WHERE  Type = 'Out'
    GROUP BY ID,
             Date
)
SELECT T.ID,
       T.Name,
       T.Date,
       MinLogin,
       MaxLogout
FROM   Table T
       JOIN LoginCTE I
           ON T.ID = I.ID
              T.Date = I.Date 
       JOIN LogoutCTE O
           ON T.ID = O.ID
              T.Date = O.Date

Answer 2

试试这个：

select * 
  from <YOUR_TABLE_HERE> ttt
  join (
      select max(time) logout_time, name, date
        from <YOUR_TABLE_HERE>
       where type = 'Out'
       group by name, date) max_date_table on ttt.name = max_date_table.name and ttt.date = max_date_table.date and max_date_table.logout_time = ttt.time
  join (
      select min(time) login_time, name, date
        from <YOUR_TABLE_HERE>
       where type = 'In'
       group by name, date) min_date_table on ttt.name = min_date_table.name and ttt.date = min_date_table.date and ttt.time = min_date_table.login_time
order by name

如何从sql server获得首次登录和上次注销时间？

2 个答案: