在mysql中合并具有max id和min id的行

omjgkv6w 于 2021-06-17 发布在 Mysql

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嗨，我有这张table，可以节省入场的员工

IO_Id   Employee_Id   EnterDate    EnterTime    ExitDate    ExitTime
--------------------------------------------------------------------------
1          1          11/20/2018   08:00      11/20/2018     09:00
2          1          11/20/2018   09:10      11/20/2018     09:20
3          1          11/20/2018   09:30      11/20/2018     10:00
4          2          11/20/2018   09:30      11/20/2018     11:00
5          1          11/21/2018   10:00      11/21/2018     11:30

如何选择任何一行的所有日期和所有员工都有firstentertime、fistexittime、lastentertime、lastexittime的结果

IO_Id   Employee_Id   EnterDate    firstEnterTime       fistExitTime  LastEnterTime    LastExitTime
----------------------------------------------------------------------------------------------------------
1          1          11/20/2018         08:00                 09:00         09:30            10:00
4          2          11/20/2018         09:30                 11:00         09:30            11:00
5          1          11/21/2018         10:00                 11:30         10:00            11:30

sql mysql

来源：https://stackoverflow.com/questions/53455735/combine-rows-with-max-id-and-min-id-in-mysql

1条答案

按热度按时间

gjmwrych1#

您可以在下面尝试使用min（）和max（）聚合

select min(IO_Id) as IO_Id,Employee_Id,EnterDate as first_EnterDat,
min(EnterTime) as first_EnterTime,min(ExitTime) as fistExitTime,max(EnterTime) as last_EnterTime,max(ExitTime) as lasEtxitTime
from tablename
group by Employee_Id,EnterDate
order by IO_Id

赞(0）回复(0）举报 2021-06-18

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在mysql中合并具有max id和min id的行

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