Count SQL SERVER正在计算ID的值

我正试着为每个C.ID计算B.ID的数量

到目前为止，我得到以下信息：

Select
C.ID,
COUNT(Distinct B.ID)AS 'Total bookings'

FROM Client C

inner join Booking B on B.ClientID=C.ID

Where ClientID = '594861'

Group by C.ID

Select
C.ID,
COUNT(Distinct B.ID)AS 'Total bookings'

FROM Client C

inner join Booking B on B.ClientID=C.ID

Where ClientID = '594861'

Group by C.ID

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问题出在我的小组身上