推薦方法3

?

--方法1：
SELECT? *
FROM??? ( SELECT??? Row_Number() OVER ( PARTITION BY [orderno] ORDER BY ( SELECT
????????????????????????????????????????????????????????????? 0
????????????????????????????????????????????????????????????? ) ) AS RowNO ,
??????????????????? *
????????? FROM????? tblMulCharge
??????? ) t
WHERE?? T.RowNO > 1 ;

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--方法2：

WITH??? ct01
????????? AS ( SELECT?? ROW_NUMBER() OVER ( PARTITION BY orderno ORDER BY ( SELECT
????????????????????????????????????????????????????????????? 0
????????????????????????????????????????????????????????????? ) ) AS rn
?????????????? FROM???? tblMulCharge
???????????? )
??? DELETE? FROM ct01
??? WHERE?? rn > 1
??? go

--方法3:針對大數據

WITH??? ct01
????????? AS ( SELECT?? [ID] ,
??????????????????????? [OriOrderNo] ,
??????????????????????? [OrderNo] ,
??????????????????????? [TotalAmount] ,
??????????????????????? [PayAmount] ,
??????????????????????? [ProviderAmount] ,
??????????????????????? [transaction_id] ,
??????????????????????? [PNRCode] ,
??????????????????????? [Consumer] ,
??????????????????????? [Provider] ,
??????????????????????? [SellerAccount] ,
??????????????????????? [BuyerAccount] ,
??????????????????????? [State] ,
??????????????????????? [PayTime] ,
??????????????????????? [PayInfo] ,
??????????????????????? [RefundTime] ,
??????????????????????? [refund_id] ,
??????????????????????? [refund_info] ,
??????????????????????? [RefundTimeV] ,
??????????????????????? [refund_id_V] ,
??????????????????????? [refund_info_V] ,
??????????????????????? [RefundAmount] ,
??????????????????????? ROW_NUMBER() OVER ( PARTITION BY orderno ORDER BY ( SELECT
????????????????????????????????????????????????????????????? 0
????????????????????????????????????????????????????????????? ) ) AS rn
?????????????? FROM???? tblMulCharge
???????????? )
??? SELECT?
??? [ID]
????? ,[OriOrderNo]
????? ,[OrderNo]
????? ,[TotalAmount]
????? ,[PayAmount]
????? ,[ProviderAmount]
????? ,[transaction_id]
????? ,[PNRCode]
????? ,[Consumer]
????? ,[Provider]
????? ,[SellerAccount]
????? ,[BuyerAccount]
????? ,[State]
????? ,[PayTime]
????? ,[PayInfo]
????? ,[RefundTime]
????? ,[refund_id]
????? ,[refund_info]
????? ,[RefundTimeV]
????? ,[refund_id_V]
????? ,[refund_info_V]
????? ,[RefundAmount]
??? INTO??? dbo.tblMulCharge_tmp
??? FROM??? ct01
??? WHERE?? rn = 1
DROP TABLE dbo.tblMulCharge ;
?
EXEC sp_rename 'dbo.tblMulCharge_tmp', 'tblMulCharge'

?

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轉載于:https://blog.51cto.com/ocpyang/1194556

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