Question

一段时间以来，我一直在尝试使用row_number()解决数据重复问题，但我无法使其正常工作。我有一堆记录，所有记录都在同一日期但时间不同，所以我只希望每天的前两个日期实例（每个实例实际上是半天），我可以忽略其他记录。

下面的SQL几乎可以满足我的要求，但只给了我一半的行数

SELECT
    Trade.tradedate AS TradeDate,
    Trade.status,
    contract.contract AS ContractID,
    'obsolete' AS ZainetRef,
    fee.feemode,
    position.counterparty,
    position.positiontype,
    Trade.cstcontractstart AS ContractStartDate, 
    Trade.cstcontractend AS ContractEndDate,
    contract.contracttype,
    CONVERT(INT, Trade.trade) AS TradeID,
    feetimeperiod.feetimeperiod,
    feetimeperiod.dbcolumn,
    feetimeperiod.dbvalue,
    (CONVERT(TIME, feetimeperiod.begtime)) AS TheTime,
    feetimeperiod.begtime AS FeeTimePeriodBeginTime,
    feetimeperiod.endtime AS FeeTimePeriodEndTime,
    loadshapeprofile.begtime AS StartDateTime,
    loadshapeprofile.endtime AS EndDateTime,
    loadshapeprofile.offset,
    loadshape.timeunit,
    CASE 
       WHEN CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) = 1 
          THEN 'D' 
       WHEN CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) > 1  
            AND CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) <= 31 
          THEN 'M' 
       WHEN CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) > 31 
            AND CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) <= 93 
          THEN 'Q'
       WHEN CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) > 93 
            AND CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) <= 183 
          THEN 'S'
       ELSE 'Y' 
    END AS BlockDescription,
    position.block,
    CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS FLOAT) * 24.0  AS HoursInPeriod,
    CAST((loadshapeprofile.endtime - loadshapeprofile.begtime) AS INT) AS Days,
    position.unit,
    ISNULL(fee.pricediff,0) AS GBPMWh,
    CASE
       WHEN loadshape.timeunit = 'HALFHOUR' 
          THEN ((loadshapeprofile.he1 + loadshapeprofile.he2 + loadshapeprofile.he3 + loadshapeprofile.he4 + loadshapeprofile.he5 + loadshapeprofile.he6 + loadshapeprofile.he7 + loadshapeprofile.he8 + loadshapeprofile.he9 + loadshapeprofile.he10 + loadshapeprofile.he11 + loadshapeprofile.he12 + loadshapeprofile.he13 + loadshapeprofile.he14 + loadshapeprofile.he15 + loadshapeprofile.he16 + loadshapeprofile.he17 + loadshapeprofile.he18 + loadshapeprofile.he19 + loadshapeprofile.he20 + loadshapeprofile.he21 + loadshapeprofile.he22 + loadshapeprofile.he23 + loadshapeprofile.he24 + loadshapeprofile.he25) * 0.5)/24
    ELSE  
        ((loadshapeprofile.he1 + loadshapeprofile.he2 + loadshapeprofile.he3  + loadshapeprofile.he4 + loadshapeprofile.he5 + loadshapeprofile.he6 + loadshapeprofile.he7 + loadshapeprofile.he8 + loadshapeprofile.he9 + loadshapeprofile.he10 + loadshapeprofile.he11 + loadshapeprofile.he12 + loadshapeprofile.he13 + loadshapeprofile.he14 + loadshapeprofile.he15 + loadshapeprofile.he16 + loadshapeprofile.he17 + loadshapeprofile.he18 + loadshapeprofile.he19 + loadshapeprofile.he20 + loadshapeprofile.he21  + loadshapeprofile.he22 + loadshapeprofile.he23 + loadshapeprofile.he24 + loadshapeprofile.he25) )/24
    END AS MW,
    CASE
       WHEN loadshape.timeunit = 'HALFHOUR' 
          THEN 
    ((loadshapeprofile.he1 
    + loadshapeprofile.he2 
    + loadshapeprofile.he3 
    + loadshapeprofile.he4 
    + loadshapeprofile.he5
    + loadshapeprofile.he6
    + loadshapeprofile.he7
    + loadshapeprofile.he8
    + loadshapeprofile.he9
    + loadshapeprofile.he10
    + loadshapeprofile.he11
    + loadshapeprofile.he12
    + loadshapeprofile.he13
    + loadshapeprofile.he14
    + loadshapeprofile.he15
    + loadshapeprofile.he16 
    + loadshapeprofile.he17
    + loadshapeprofile.he18
    + loadshapeprofile.he19
    + loadshapeprofile.he20
    + loadshapeprofile.he21 
    + loadshapeprofile.he22
    + loadshapeprofile.he23
    + loadshapeprofile.he24
    + loadshapeprofile.he25) * 0.5) 
    ELSE  
    ((loadshapeprofile.he1 
    + loadshapeprofile.he2 
    + loadshapeprofile.he3 
    + loadshapeprofile.he4 
    + loadshapeprofile.he5
    + loadshapeprofile.he6
    + loadshapeprofile.he7
    + loadshapeprofile.he8
    + loadshapeprofile.he9
    + loadshapeprofile.he10
    + loadshapeprofile.he11
    + loadshapeprofile.he12
    + loadshapeprofile.he13
    + loadshapeprofile.he14
    + loadshapeprofile.he15
    + loadshapeprofile.he16 
    + loadshapeprofile.he17
    + loadshapeprofile.he18
    + loadshapeprofile.he19
    + loadshapeprofile.he20
    + loadshapeprofile.he21 
    + loadshapeprofile.he22
    + loadshapeprofile.he23
    + loadshapeprofile.he24
    + loadshapeprofile.he25))
END AS MWh,
CASE
    WHEN loadshape.timeunit = 'HALFHOUR' THEN 
    ((loadshapeprofile.he1 
    + loadshapeprofile.he2 
    + loadshapeprofile.he3 
    + loadshapeprofile.he4 
    + loadshapeprofile.he5
    + loadshapeprofile.he6
    + loadshapeprofile.he7
    + loadshapeprofile.he8
    + loadshapeprofile.he9
    + loadshapeprofile.he10
    + loadshapeprofile.he11
    + loadshapeprofile.he12
    + loadshapeprofile.he13
    + loadshapeprofile.he14
    + loadshapeprofile.he15
    + loadshapeprofile.he16 
    + loadshapeprofile.he17
    + loadshapeprofile.he18
    + loadshapeprofile.he19
    + loadshapeprofile.he20
    + loadshapeprofile.he21 
    + loadshapeprofile.he22
    + loadshapeprofile.he23
    + loadshapeprofile.he24
    + loadshapeprofile.he25) * 0.5)  * ISNULL(fee.pricediff,0)
    ELSE  
    ((loadshapeprofile.he1 
    + loadshapeprofile.he2 
    + loadshapeprofile.he3 
    + loadshapeprofile.he4 
    + loadshapeprofile.he5
    + loadshapeprofile.he6
    + loadshapeprofile.he7
    + loadshapeprofile.he8
    + loadshapeprofile.he9
    + loadshapeprofile.he10
    + loadshapeprofile.he11
    + loadshapeprofile.he12
    + loadshapeprofile.he13
    + loadshapeprofile.he14
    + loadshapeprofile.he15
    + loadshapeprofile.he16 
    + loadshapeprofile.he17
    + loadshapeprofile.he18
    + loadshapeprofile.he19
    + loadshapeprofile.he20
    + loadshapeprofile.he21 
    + loadshapeprofile.he22
    + loadshapeprofile.he23
    + loadshapeprofile.he24
    + loadshapeprofile.he25) * ISNULL(fee.pricediff,0))
END AS BlockCost,
    loadshapeprofile.he1,   
    loadshapeprofile.he2,   
    loadshapeprofile.he3,   
    loadshapeprofile.he4,
    loadshapeprofile.he5,   
    loadshapeprofile.he6,   
    loadshapeprofile.he7,   
    loadshapeprofile.he8,   
    loadshapeprofile.he9,   
    loadshapeprofile.he10,  
    loadshapeprofile.he11,  
    loadshapeprofile.he12,  
    loadshapeprofile.he13,  
    loadshapeprofile.he14,  
    loadshapeprofile.he15,  
    loadshapeprofile.he16,  
    loadshapeprofile.he17,  
    loadshapeprofile.he18,  
    loadshapeprofile.he19,  
    loadshapeprofile.he20,  
    loadshapeprofile.he21,  
    loadshapeprofile.he22,  
    loadshapeprofile.he23,  
    loadshapeprofile.he24,  
    loadshapeprofile.he25   
from Trade
inner join position on trade.trade = position.trade
inner join contract on position.contract = contract.contract
inner join loadshape on position.loadshape = loadshape.loadshape
inner join loadshapeprofile on loadshape.loadshape = loadshapeprofile.loadshape 
inner join fee on position.position = fee.dbvalue 
inner join feetimeperiod on fee.feetimeperiod = feetimeperiod.feetimeperiod and feetimeperiod.dbvalue = position.position
where contract.contract = '1111111'
and position.loadshape is not null
and fee.dbcolumn = 'POSITION' 
and fee.feemethod = 'COMMODITY PRICE'
and (CAST(DATEPART(MINUTE, feetimeperiod.begtime ) as decimal) = loadshapeprofile.offset)
and Trade.status = 'ACTIVE'
and trade.trade = 261333
and Trade.tradestatus IN ('FO Approval','TC Approval')
and feetimeperiod.feetimeperiod IN (select feetimeperiod from (select feetimeperiod, begtime, loadshapeprofile.offset, ROW_NUMBER() over (partition by  CONVERT(date,feetimeperiod.begtime), CONVERT(date,feetimeperiod.endtime),loadshapeprofile.offset order by CONVERT(date,feetimeperiod.begtime)) RowNumber from feetimeperiod) ftp where (ftp.RowNumber = 1 AND (CONVERT(date,ftp.begtime) =  CONVERT(date,loadshapeprofile.begtime) )) )
order by feetimeperiod.begtime

我的目标是为每个FeeTimePeriodBeginTime（日期）获取2行，其中一行的偏移量为0，另一行的偏移量为30，这实际上给了我一天的时间，但是我真的挠头了（我什至会这么做）正确的方法吗？）

任何帮助将不胜感激

Answer 1

您的问题不是因为row_number，而是因为您使用具有“ IN”条件的row_number。 SQL Server删除条件为“ IN”的重复项。如果要查看重复的行，则需要“加入”。

Answer 2

为了最终弄清楚自己，我使用了常见的表格表达式

;WITH FeePeriod_CTE 
AS
(
	select feetimeperiod.feetimeperiod, 
		feetimeperiod.begtime, 
		feetimeperiod.endtime, 
		loadshapeprofile.offset, 
		ROW_NUMBER() over (partition by CONVERT(date,feetimeperiod.begtime),CONVERT(date,feetimeperiod.endtime),loadshapeprofile.offset order by CONVERT(date,feetimeperiod.begtime)) RowNumber 
		from trade
		inner join position on trade.trade = position.trade
		inner join contract on position.contract = contract.contract
		inner join loadshape on position.loadshape = loadshape.loadshape
		inner join loadshapeprofile on loadshape.loadshape = loadshapeprofile.loadshape 
		inner join fee on position.position = fee.dbvalue 
		inner join feetimeperiod on fee.feetimeperiod = feetimeperiod.feetimeperiod and feetimeperiod.dbvalue = position.position
		where contract.contract = '110156'
		and position.loadshape is not null
		and fee.dbcolumn = 'POSITION' 
		and fee.feemethod = 'COMMODITY PRICE'
		and (CAST(DATEPART(MINUTE, feetimeperiod.begtime ) as decimal) = loadshapeprofile.offset)
		and Trade.status = 'ACTIVE'
		and trade.trade = 261333
		and Trade.tradestatus IN ('FO Approval','TC Approval')
		AND (CONVERT(date,feetimeperiod.begtime) =  CONVERT(date,loadshapeprofile.begtime) )
)

，然后在WHERE子句中添加此行

and feetimeperiod.feetimeperiod IN (select feetimeperiod from FeePeriod_CTE where RowNumber = 1)

它现在可以完美运行

SQL Server 2012移除ROW_NUMBER（）超过分区的重复项

2 个答案: