如何获得登录和退出之间的小时差异

Question

如何获得登录和退出时间之间的小时和小时差异？

我使用了以下查询：

select LoginDateTime,LogoutDateTime from Fleet_DriverQueueList

我在下面附上了我的数据截图。

Answer 1

尝试以下方法：

SELECT ISNULL(DATEDIFF(HOUR, LoginDateTime, LogoutDateTime), 1) FROM Table

Answer 2

只需使用DATEDIFF功能即可。像这样：

SELECT
    DATEDIFF(HOUR,[LoginDateTime],[LogoutDateTime])
FROM
    YourTable 

Answer 3

最好在几分钟甚至几秒钟内使用DATEDIFF，这样会更准确：

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            public void run() {
                ItemsFragment itemsFragment = new ItemsFragment () {GroupID = groupID, CurrentGroup = currentGroup};
                itemsFragment.RetainInstance = true;
                var fragmentManager = SupportFragmentManager.BeginTransaction ();
                fragmentManager.Replace (Resource.Id.flContent, (SupportFragment) itemsFragment);
                fragmentManager.AddToBackStack (null);
                fragmentManager.Commit ();
            }
        });

Answer 4

你可以使用Datediff功能，试试这个

Select Case when isnull(LogoutDateTime,'')='' then 'Active' else 'Not Active' end as Status, 
Case when isnull(LogoutDateTime,'')='' 
     then DATEDIFF(HH,LoginDateTime,getdate()) 
     else DATEDIFF(HH,LoginDateTime,LogoutDateTime) end as Period 
from Fleet_DriverQueueList