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如何構建下面的查詢以同時運行多個數據庫。如何優化查詢 - 使用視圖提取計數信息
要計算數據庫中活動用戶的總數,我當前必須一次運行查詢一個數據庫。
是否有某種可以動態運行的foreach函數?
with data as
(select p.CoNum CoNum, p.LastName, p.Name,co.name Company, liGender.Description as Gender, liEth.Description as EthnicGroup,Isnull(Limed.Description,'Not Specified') FinancialAid,
vwPTU.[UserP Type] as UserPType
from UsersP p
left outer join ListItem liGender on liGender.Id = p.Gender
left outer join ListItem liEth on liEth.Id = p.EthnicGroup
left outer join ListItem limed on limed.Id = p.FinancialAidId
inner join UserPOrgNodeAssociation pona on P.Id = pona.UserPId
inner join CoAssociation coda on pona.CoNodeDescAssociationId = coda.Id
inner join Company co on coda.companyid=co.id
left outer join [dbo].[vw_XUserUniqueView] vwPTU on p.Id = vwPTU.Id
and vwPTU.[ValidToDate] > '2015/12/31 23:59 PM'
where vwPTU.[User Type] is not null
)
select Company, count(distinct CoNum) as Total
from data
group by company
的使用條款只是爲了說明,對不對?這真的是你選擇的觀點,對嗎?如果沒有,那麼你可以通過刪除不必要的部分來顯着簡化你的子句。 –
是的with子句是爲了說明。誠然,謝謝。 – Sizons