T-SQL查詢未正確分組

Question

我已經編寫了此查詢來從個案聲明中提取計數，並加入到幾天的清單中。 但是查詢未正確分組。 知道我需要做什么嗎？

select      A.DayName,
        A.DayNumber,
        count(case
        when cast([B].ReturnedDateTime as Time) <= '12:00:00' then 1 else null
        end) as AMCount
from        TSP1_Dev.General.Days A left outer join TSP1_Dev.iOPS.RejectedJobs B
on          A.DayName = B.DayName
group by     A.DayName, A.DayNumber, 
        case
        when cast([B].ReturnedDateTime as Time) <= '12:00:00' then 1 else null
        end
order by     A.DayNumber

我得到的輸出是這樣的：

DayName DayNumber   AMCount
Monday  1   0
Monday  1   1
Tuesday 2   0
Tuesday 2   2
Wednesday   3   0
Thursday    4   0
Thursday    4   2
Friday  5   0

Answer 1

嘗試這個：

select      A.DayName,
    Max(A.DayNumber) DayNumber,
    Sum(case
    when cast([B].ReturnedDateTime as Time) <= '12:00:00' then 1 else 0
    end) as AMCount
from        TSP1_Dev.General.Days A left outer join TSP1_Dev.iOPS.RejectedJobs B
on          A.DayName = B.DayName
group by     A.DayName
order by     A.DayNumber

Answer 2

哎呀！ 我不需要按案情陳述分組-當我將其取出時，它可以很好地工作。