我如何使用计数来查看＆＃34;消息＆＃34;列数＆＃34;小时＆＃34; SQL中一个月之间的列？

Question

我想计算每个小时与列日期分隔的消息，我写这个查询但是每个重复小时显示1条消息，有人可以帮忙吗？感谢

Select MsgCount,ReadTime 
From (Select Count(MsgID) MsgCount, 
      LTRIM(RIGHT(CONVERT(VARCHAR(20), mDate, 100), 7)) as ReadTime
      FROM (Select  ReadDate as mDate,
            Convert (TIME, ReadDate) as ReadTime,MessageID as MsgID 
            From QUEUE_BOOKINGQUEUE 
            WHERE MessageID like '%Transaction%'
            AND ReadDate BETWEEN '2017-11-01' AND '2017-11-30') 
      s1
      Group by mDate
) A
Group by MsgCount,ReadTime
Order by 2

Answer 1

它与我合作，因为这张照片没有重复 所以，如果你想删除分组，它将是这样的：

Select MsgCount,ReadTime 
From (Select Count(MsgID) MsgCount, 
      LTRIM(RIGHT(CONVERT(VARCHAR(20), mDate, 100), 7)) as ReadTime
      FROM (Select  ReadDate as mDate,
            Convert (TIME, ReadDate) as ReadTime,MsgID as MsgID 
            From QUEUE_BOOKINGQUEUE 
    )  s1
      Group by mDate,s1.MsgID
) A