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我有一個問題,我需要計算2個不同列之間的百分比。不幸的是,我不能讓它的工作,當我運行此我得到的是「無效的列名稱CountOfPlannedVisits'」 &「無效的列名稱CountOfPlannedVisitsClosed'」SQL計算2列的百分比
SELECT Count(*) As CountOfPlannedVisits, MAX(datename(month, dbo.tblVisit.DateConfirmed)) AS MonthName,
SUM(CASE WHEN tblVisit.VisitTypeRef <> '5' THEN 1 ELSE 0 END) AS CountOfPlannedVisitsClosed, CAST(100.0 * SUM("CountOfPlannedVisits")/SUM(CountOfPlannedVisitsClosed) AS Decimal(5,2)) As OverallAttendance
FROM dbo.tblContract INNER JOIN
dbo.tblCustomer ON dbo.tblContract.CustomerRef = dbo.tblCustomer.CustomerID INNER JOIN
dbo.tblContractSite ON dbo.tblContract.ContractID = dbo.tblContractSite.ContractRef INNER JOIN
dbo.tblVisit ON dbo.tblContractSite.CardNumber = dbo.tblVisit.CardNumber
WHERE (tblCustomer.CustomerNumber = '08434')
AND (tblVisit.Routine = '1')
AND year(tblVisit.DateConfirmed) = Year('2013')[email protected])
AND dbo.IsOnHoldEx(tblContract.OnHold, tblContractSite.OnHold, tblContract.OnHoldStartDate, tblContract.OnHoldEndDate, tblContractSite.OnHoldStartDate, tblContractSite.OnHoldEndDate) = 0
AND tblVisit.Deleted = 0 -- make sure we dont pull through deleted visits
AND (tblContractSite.DateInactive is NULL or tblContractSite.DateInactive > GetDate())
GROUP BY month(dbo.tblVisit.DateConfirmed)
任何幫助將不勝感激,因爲我我不確定該從哪裏出發!
感謝
您可以更新查詢,以顯示它的所有現在?:你有一個'WHERE'與後一無所獲。 –