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這是我沒有得到某些或其他原因。獲取實例SQL Server的唯一計數
我的記錄
BusinessUnitId Position Date Time
-----------------------------------------------------------
76 Staff 3/30/2009 11:00:00 AM
76 Staff 3/30/2009 04:00:00 PM
76 Management 3/30/2009 05:00:00 PM
78 Exco 3/30/2009 09:00:00 AM
78 Staff 3/30/2009 09:30:00 AM
列表。如果我通過
select
count(answer.BusinessUnitId)
from
AnswerSelected answer
group by
answer.BusinessUnitId
做一組我檢索和3
值2
我想實現的就是讓計數爲2
所以總計2
業務單位提交了答案,76
和78
(希望這有意義)
我該怎麼做?
感謝
https://stackoverflow.com/questions/1521605/sql-server-query-selecting-count-with-distinct – TryingToImprove
SELECT COUNT(distint BusinessUnitId)? – sepupic