对于如何以更有效的方式编写此代码，我真的可以提供一些帮助。我基本上创建了一个CTE来保存包含车辆的数据集，按日和它们装载的集装箱的重量。容器需要具有一定的重量，因此通过/失败字段。
我所要做的就是取得CTE中的升力水平细节，然后将其汇总，以获得通过/未通过标准的提升集装箱的数量，并汇总任何失败升降机的原因。
我只是想知道最好的方法是使用CTE，或者临时表或任何方法是否会加速它或更标准的做法？
理想情况下，我会发布CTE数据的图像，然后发布输出数据，但我无法发布图像：（
非常感谢提前
WITH DetailLifts
AS (SELECT CO.Description 'Outlet',
LE.[VehicleCode],
S.FORENAME + ' ' + S.SURNAME AS Name,
le.[CollectionDate],
le.lifteventid,
C.CustomerName,
Cast([CollectionTimeStamp] AS TIME) 'CollectionTime',
LE.[NetWeight],
le.grossweight,
le.tareweight,
ct.description,
CASE
WHEN CT.Description LIKE 'Euro%' THEN 10
WHEN CT.Description LIKE 'FEL%' THEN 30
END 'Threshold',
CASE
WHEN le.Grossweight IS NOT NULL
AND le.grossweight - le.tareweight < ( CASE
WHEN CT.Description LIKE 'Euro%' THEN -10
WHEN CT.Description LIKE 'FEL%' THEN -30
END )
OR le.grossweight - le.tareweight > ( CASE
WHEN CT.Description LIKE 'Euro%' THEN 10
WHEN CT.Description LIKE 'FEL%' THEN 30
END ) THEN 1
WHEN le.grossweight IS NULL
AND le.netweight < ( CASE
WHEN CT.Description LIKE 'Euro%' THEN -10
WHEN CT.Description LIKE 'FEL%' THEN -30
END )
OR le.netweight > ( CASE
WHEN CT.Description LIKE 'Euro%' THEN 10
WHEN CT.Description LIKE 'FEL%' THEN 30
END ) THEN 1
WHEN le.netweight IS NULL THEN 0
WHEN le.grossweight = 0
AND le.tareweight = 0
AND le.netweight = 0 THEN 0
ELSE 0
END 'Overweight',
CASE
WHEN Isnull([LiftText], 'No') = 'No' THEN 1
ELSE 0
END AS 'NoLift',
CASE
WHEN Isnull([LiftText], 'No') = 'no' THEN 0
ELSE 1
END AS 'Lifts',
CASE
WHEN SOI.SiteOrderId IS NULL THEN 'Not Matched'
ELSE 'Matched'
END AS 'MatchedLogic',
CASE
WHEN Isnull([LiftText], 'No') = 'No'
AND LiftInformationId IS NOT NULL THEN 'Yes'
ELSE 'No'
END 'Reason Code Used',
r2.Description AS 'ReasonCode',
CASE
WHEN le.Grossweight IS NOT NULL
AND le.grossweight - le.tareweight < ( CASE
WHEN CT.Description LIKE 'Euro%' THEN -10
WHEN CT.Description LIKE 'FEL%' THEN -30
END )
OR le.grossweight - le.tareweight > ( CASE
WHEN CT.Description LIKE 'Euro%' THEN 10
WHEN CT.Description LIKE 'FEL%' THEN 30
END ) THEN 0
WHEN le.grossweight IS NULL
AND le.netweight < ( CASE
WHEN CT.Description LIKE 'Euro%' THEN -10
WHEN CT.Description LIKE 'FEL%' THEN -30
END )
OR le.netweight > ( CASE
WHEN CT.Description LIKE 'Euro%' THEN 10
WHEN CT.Description LIKE 'FEL%' THEN 30
END ) THEN 0
WHEN ( Substring(le.vehiclecode, 3, 2) IN ( 57, 58, 63, 14,
64, 15, 65 )
OR ct.description LIKE '%fel%' )
AND le.netweight IS NOT NULL
AND le.grossweight IS NULL THEN 0
WHEN le.netweight IS NULL
OR ( le.grossweight = 0
AND le.tareweight = 0 ) THEN 0
ELSE 1
END 'Pass',
CASE
WHEN le.Grossweight IS NOT NULL
AND le.grossweight - le.tareweight < ( CASE
WHEN CT.Description LIKE 'Euro%' THEN -10
WHEN CT.Description LIKE 'FEL%' THEN -30
END )
OR le.grossweight - le.tareweight > ( CASE
WHEN CT.Description LIKE 'Euro%' THEN 10
WHEN CT.Description LIKE 'FEL%' THEN 30
END ) THEN 1
WHEN le.grossweight IS NULL
AND le.netweight < ( CASE
WHEN CT.Description LIKE 'Euro%' THEN -10
WHEN CT.Description LIKE 'FEL%' THEN -30
END )
OR le.netweight > ( CASE
WHEN CT.Description LIKE 'Euro%' THEN 10
WHEN CT.Description LIKE 'FEL%' THEN 30
END ) THEN 1
WHEN ( Substring(le.vehiclecode, 3, 2) IN ( 57, 58, 63, 14,
64, 15, 65 )
OR ct.description LIKE '%fel%' )
AND le.netweight IS NOT NULL
AND le.grossweight IS NULL THEN 1
WHEN le.netweight IS NULL
OR ( le.grossweight = 0
AND le.tareweight = 0 ) THEN 1
ELSE 0
END 'Fail',
lifttext,
CASE
WHEN ( Substring(le.vehiclecode, 3, 2) IN ( 57, 58, 63, 14,
64, 15, 65 )
OR ct.description LIKE '%fel%' )
AND le.netweight IS NOT NULL
AND le.grossweight IS NULL THEN 1
ELSE 0
END AS 'VehicleFault'
FROM [CFO_P155_Pre_Production_ELEMOS].[dbo].[LiftEvent]LE
LEFT JOIN CFO_P155_Pre_Production_ELEMOS.dbo.Route RT
ON RT.routeid = le.routeid
LEFT JOIN CFO_P155_Pre_Production_ELEMOS.dbo.SysUser S
ON S.sysuserid = RT.driversysuserid
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[Vehicle]V
ON LE.VehicleId = V.VehicleId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[CompanyOutlet]CO
ON V.CompanyOutletId = CO.CompanyOutletId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[Reason]R
ON LE.LiftProblemId = R.ReasonId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[Reason]R2
ON LE.LiftInformationId = R2.ReasonId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[SiteOrderItem]SOI
ON SOI.SiteOrderItemId = LE.SiteOrderItemId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[SiteOrder]SO
ON SOI.SiteOrderId = SO.SiteOrderId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[CustomerSite]CS
ON SO.CustomerSiteId = CS.CustomerSiteId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[Location]L
ON CS.LocationId = L.LocationId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[Customer]C
ON CS.CustomerId = C.CustomerId
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[Material]M
ON SO.MaterialId = M.Materialid
LEFT JOIN [CFO_P155_Pre_Production_ELEMOS].[dbo].[ContainerType]CT
ON SOI.ContainerTypeId = CT.ContainerTypeId
WHERE CO.Description IN ( 'Portsmouth' )
AND le.CollectionDate >= '2015-03-02'
AND le.CollectionDate <= '2015-03-06'
AND ( ct.description LIKE '%euro%'
OR ct.description LIKE '%FEl%' )
--and substring(le.vehiclecode,3,2) in (57,58,63,64,65) and le.netweight is not null and le.grossweight is null
AND C.Customerid = 18407)
SELECT dl.outlet,
dl.collectiondate,
dl.vehiclecode,
dl.name,
CASE
WHEN passesandfails.Pass >= 5
AND passesandfails.Fail = 0 THEN 'Pass'
ELSE 'Fail'
END AS 'Pass or Fail',
passesandfails.pass,
passesandfails.fail,
Isnull(matchedlifts.matchedActuallifts, 0) AS MatchedActualLifts,
Isnull(lifted.NoLift, 0) AS 'MatchedNotLifted(Lift Complete)',
Isnull(overweights.overweight, 0) AS Overweights,
Sum(vehiclefault) AS VehicleFault
FROM DetailLifts DL
LEFT JOIN (SELECT outlet,
collectiondate,
vehiclecode,
Sum(pass) pass,
Sum(fail) fail
FROM detaillifts dl
GROUP BY outlet,
collectiondate,
vehiclecode) AS PassesandFails
ON dl.Collectiondate = passesandfails.collectiondate
AND dl.vehiclecode = passesandfails.vehiclecode
LEFT JOIN (SELECT outlet,
collectiondate,
vehiclecode,
Sum(overweight)AS overweight
FROM detaillifts DL
GROUP BY outlet,
collectiondate,
vehiclecode) AS Overweights
ON dl.collectiondate = overweights.collectiondate
AND dl.vehiclecode = overweights.vehiclecode
LEFT JOIN (SELECT collectiondate,
vehiclecode,
Count(lifteventid) AS MatchedActualLifts
FROM detaillifts DL
WHERE lifttext IS NOT NULL
GROUP BY collectiondate,
vehiclecode) AS MatchedLifts
ON dl.collectiondate = matchedlifts.collectiondate
AND dl.vehiclecode = matchedlifts.vehiclecode
LEFT JOIN (SELECT collectiondate,
vehiclecode,
Sum(lifts) AS Lifts,
Sum(nolift) AS NoLift
FROM detaillifts
GROUP BY collectiondate,
vehiclecode)AS lifted
ON lifted.collectiondate = dl.collectiondate
AND lifted.vehiclecode = dl.vehiclecode
GROUP BY dl.outlet,
dl.collectiondate,
dl.vehiclecode,
dl.name,
matchedActuallifts,
passesandfails.pass,
passesandfails.fail,
lifted.nolift,
overweights.overweight
ORDER BY outlet,
collectiondate,
vehiclecode
答案 0 :(得分：0)
CTE只是语法并被评估为
但如果CTE运行速度快，那就不是问题了
实现t #temp的成本
单独运行CTE需要多长时间？
锄头做了整个查询吗？
但你有两个你不需要的联接
将Sum（超重）AS超重移至PassesandFails
将Count（lifteventid）向下移动到提升为Count（lifttext）
null不计算
这将减少1/2
中的连接开销如果您得到了您期望的答案，那么我没有看到发布数据的目的