提高参数化查询性能
Maz*_*har 7 performance sql-server sql-server-2008-r2 query-performance
我的任务是提高下面查询执行计划链接中显示的 SQL Server 2008 R2 查询（在存储过程中）的性能。
它目前在大约 7 秒内执行，如果可能，需要在 1-2 秒内完成。慢查询的每次执行总是在 7 秒左右。查询的结果涓涓细流。被查询的表很大，但不是数十亿行。
行数
根据传递的参数，结果可以是几百行（执行亚秒）到 > 300K 行（这很慢）。
我已经包含了优化器正在使用的慢查询执行计划和索引。这是更快执行的计划，并且STATISTICS IO, TIME：
有两个查询正在执行。第一个不是问题。这是我需要帮助的第二个。虽然需要，但删除非 SARGable 谓词 ( AND FT.TripDistance < ( CONVERT(NUMERIC(10,0),FT.TripTime) * 83.33 )) 对速度略有不同
删除函数 [FN_GetLocalTime_FromUTC_BasedOnTZId] 对速度略有不同，这里是STATISTICS IO TIME删除非 SARG where 子句和函数：这是执行计划
这是除了添加LOOP JOIN提示之外的未更改查询的输出。这个比较慢。
我注意到，在慢速不变的查询计划中，FACT_trip_Statuses表上 Index Seek 的实际行数 (300330)接近最终输出 (299887)。然而，在索引行（4.87米）的实际数量寻求的xFactTrip_Annex，FACT_Trip以及FACT_Trip_Attributes是出路。我该如何解决？添加OPTION RECOMPILE几乎没有区别
我尝试添加跟踪标志 4199DBCC TRACEON (4199, -1);并在有和没有JOIN提示的情况下重试，没有帮助。
HASH 连接提示和 TF 4199
LOOP 连接提示和 TF 4199
没有加入提示和 TF 4199
指数
CREATE NONCLUSTERED INDEX IDX_FACT_Trip_StartDateUTC_VehicleKey_Includes ON dbo.FACT_Trip
(
StartDateUTC ASC,
VehicleKey ASC,
EndDateUTC ASC
)
INCLUDE ( DriverKey,
DrivingTime,
TripDistance,
TripTime)
CREATE NONCLUSTERED INDEX IX_xFactTrip_Annex_StartDateUTC_MonthlyProcessing ON dbo.xFactTrip_Annex
(
StartDateUTC ASC
)
INCLUDE ( VehicleKey,
Spd20Count, Spd20Distance,
Spd30Count, Spd30Distance,
Spd40Count, Spd40Distance,
Spd50Count, Spd50Distance,
Spd60Count, Spd60Distance,
Spd70Count, Spd70Distance,
SpdCat1,SpdCat2,SpdCat3,
TotalIdling,
PTOTime,
TripFuel)
CREATE NONCLUSTERED INDEX IX_FACT_Trip_Attributes_StartDateUTC_VehicleKey_Includes ON dbo.FACT_Trip_Attributes
(
StartDateUTC ASC,
VehicleKey ASC,
EndDateUTC ASC
)
INCLUDE ( Attribute0Distance,
Attribute1Distance,
Attribute2Distance,
Attribute3Distance,
Attribute4Distance,
Attribute5Distance,
Attribute6Distance,
Attribute7Distance,
Attribute8Distance,
Attribute9Distance,
Attribute10Distance)
CREATE NONCLUSTERED INDEX IDX_FACT_Trip_Statuses_StartDateUTC_VehicleKey_Includes ON dbo.FACT_Trip_Statuses
(
VehicleKey ASC,
StartDateUTC ASC,
EndDateUTC ASC
)
INCLUDE ( HarshAccelerationCount,
HarshBrakeCount,
HarshBumpCount,
HarshCorneringCount,
ExcessIdleDuration,
ExcessIdleCount,
OverspeedCount)
CREATE NONCLUSTERED INDEX IX_StartDateUTC_VehicleKey_IsBP ON dbo.FACT_TripComments
(
StartDateUTC ASC
)
INCLUDE ( VehicleKey, IsBusinessPrivate)
现在，这个查询仍然有错误，我无法根据您的数据对其进行测试，但这会产生相同的结果并且运行得更快一点吗？
WITH cteBusGrps
AS(
SELECT
LTRIM(RTRIM(CAST(A.Value AS INT))) 'BusGrpId', BG.BusinessGroupKey
FROM
dbo.FN_SplitString_AB (@nvBusGrpIds_csv, ',') A
CROSS APPLY
Warehouse.dbo.DIM_BusinessGroup BG
WHERE
vn = 1
AND
BG.CtrackNodeID = CAST(A.Value AS INT)
)
INSERT INTO #xMobiles
(
NodeId
, VehicleKey
, VehicleId
, CostCentreName
, BusGrpId
, BusGrpKey
, AssignStart
, AssignEnd
, vGrpId
, vGrpName
)
SELECT
V.vNodeId
,V.VehicleKey
,CAST(V.VehicleId AS NVARCHAR(50))
,V.CostCentreName
,V.BusGrpId
,V.BusinessGroupKey
,V.CreateDate
,COALESCE(V.DeletedTime,V.DeInstalled_DT,'2100-12-31 23:59:59')
,V.vGrpId
,CAST(V.vGrpName AS NVARCHAR(100))
FROM
dbo.xED_Mobiles_OCC_ViewTable V
INNER JOIN
cteBusGrps B ON B.BusinessGroupKey = V.BusinessGroupKey
WHERE
(
( CreateDate <= @dtStartDate_LT AND DeletedTime IS NULL )
OR ( CreateDate <= @dtStartDate_LT AND DeletedTime BETWEEN @dtStartDate_LT AND @dtEndDate_LT )
OR ( CreateDate BETWEEN @dtStartDate_LT AND @dtEndDate_LT )
OR ( @dtStartDate_LT BETWEEN CreateDate AND COALESCE(V.DeletedTime,V.DeInstalled_DT,'2100-12-31 23:59:59')
)
SELECT
M.BusGrpKey
,M.VehicleKey
,M.AssignStart
,M.AssignEnd
,FT.StartDateUTC
,D.LocalStartDateTime
,D.LocalEndDateTime
,CASE WHEN ISNULL(FT.DriverKey,0) < 1 THEN 0 ELSE ISNULL(FT.DriverKey,0) END
'DriverKey'
,CASE WHEN ISNULL(FT.DriverKey,0) < 1 THEN 1 ELSE 0 END
'UnknownTrips'
,FTS.HarshAccelerationCount
,FTS.HarshBrakeCount
,FTS.HarshBumpCount
,FTS.HarshCorneringCount
,FTS.ExcessIdleDuration
,FTS.ExcessIdleCount
,FTS.OverspeedCount
,A.Spd20Count
,A.Spd20Distance
,A.Spd30Count
,A.Spd30Distance
,A.Spd40Count
,A.Spd40Distance
,A.Spd50Count
,A.Spd50Distance
,A.Spd60Count
,A.Spd60Distance
,A.Spd70Count
,A.Spd70Distance
,FT.TripDistance
,CONVERT(NUMERIC(10,0),FT.TripTime) * 83.33 'Ignore'
,FT.DrivingTime
,A.TotalIdling
,A.PTOTime
,FT.TripTime
,CAST( A.TripFuel AS DECIMAL(10,3))
'TripFuel'
,CASE
WHEN CAST( A.TripFuel AS DECIMAL(10,3)) > 0
THEN FT.TripDistance
ELSE 0
END 'Tot_TF_DistTravelled'
,A.SpdCat1
,CAST(A.SpdCat2 AS INT) 'SpdCat2'
,CAST(A.SpdCat3 AS INT) 'SpdCat3'
,CASE --EX-660
WHEN FTA.Attribute0Distance > 0 THEN 0
WHEN FTA.Attribute1Distance > 0 THEN 1
WHEN FTA.Attribute2Distance > 0 THEN 2
WHEN FTA.Attribute3Distance > 0 THEN 3
WHEN FTA.Attribute4Distance > 0 THEN 4
WHEN FTA.Attribute5Distance > 0 THEN 5
WHEN FTA.Attribute6Distance > 0 THEN 6
WHEN FTA.Attribute7Distance > 0 THEN 7
WHEN FTA.Attribute8Distance > 0 THEN 8
WHEN FTA.Attribute9Distance > 0 THEN 9
WHEN FTA.Attribute10Distance > 0 THEN 10
ELSE 0
END 'AttributeTypeId'
,ISNULL( TC.IsBusinessPrivate,0 ) 'BPOverride'
FROM
#xMobiles M
INNER JOIN
Warehouse.dbo.FACT_Trip FT ON FT.VehicleKey = M.VehicleKey
AND FT.StartDateUTC BETWEEN @dtStartDate_LT AND @dtEndDate_LT
AND FT.TripDistance < CONVERT(NUMERIC(10,0),FT.TripTime) * 83.33
INNER JOIN
dbo.xFactTrip_Annex A ON A.VehicleKey = FT.VehicleKey
AND A.StartDateUTC = FT.StartDateUTC
INNER JOIN
Warehouse.dbo.FACT_Trip_Statuses FTS ON FTS.VehicleKey = FT.VehicleKey
AND FTS.StartDateUTC= FT.StartDateUTC
INNER JOIN
Warehouse.dbo.FACT_Trip_Attributes FTA ON FTA.VehicleKey = FT.VehicleKey
AND FTA.StartDateUTC= FT.StartDateUTC
LEFT JOIN
Warehouse.dbo.FACT_TripComments TC ON TC.VehicleKey = FT.VehicleKey
AND TC.StartDateUTC = FT.StartDateUTC
CROSS APPLY
dbo.FN_GetLocalTime_FromUTC_BasedOnTZId(FT.StartDateUTC, FT.EndDateUTC, 2) D
WHERE
(
( FT.StartDateUTC BETWEEN M.AssignStart AND M.AssignEnd )
OR ( M.AssignStart <= FT.StartDateUTC AND M.AssignEnd BETWEEN FT.StartDateUTC AND FT.EndDateUTC )
)