全部，
我有一个巨大的SQL查询。当我将该查询放入存储的Proc中时，执行它需要5秒钟，我只需要查询它就需要4-5秒，但是当我在视图中运行它需要5分钟。
请告知为什么它在视图中运行缓慢
sql查询如下：
CREATE VIEW dbo.Client_Billing_RS
AS
SELECT DISTINCT TOP (100) PERCENT
CLIENT.OH_Code AS CLIENT,
BUYER.OH_Code AS BUYER,
dbo.Client_ReturnWK(pallet.MB_PR_CLOSED_DT) AS WEEKNUM,
dbo.Client_PadString(DATEPART(MONTH, CONVERT(varchar(8), pallet.MB_PR_CLOSED_DT, 112)), '0', 2) AS MONTH,
DATEPART(YEAR, CONVERT(varchar(8), pallet.MB_PR_CLOSED_DT, 112)) AS YEAR,
shipment.JS_ActualVolume,
shipment.JS_ActualWeight,
packing.MB_PD_Units ,
orderHeader.JD_OH_Buyer,
OrgMiscServ_1.OM_CustomAttrib3,
shipment.JS_TransportMode AS MODE,
shipment.JS_UniqueConsignRef ,
consol.JK_UniqueConsignRef,
DestRefCountry.RN_Desc,
part.OP_PartNum,
part.OP_Desc AS TITLE,
CONVERT(VARCHAR(8), part.OP_CustomAttrib1, 1) AS COVER_DATE,
docketLine.WE_CustomDate1 AS ON_SALE_DATE,
docketLine.WE_CustomAttrib3 AS US_BARCODE,
part.OP_CustomAttrib3 AS UK_BARCODE,
CASE WHEN freight IS NULL THEN 0 ELSE freight END AS FREIGHT,
CASE WHEN war IS NULL THEN 0 ELSE war END AS WAR,
CASE WHEN fuel IS NULL THEN 0 ELSE FUEL END AS FUEL,
shipment.JS_ActualChargeable * 1000 AS CHRG_KG,
shipment.JS_PackingMode,
'' AS MIN_CHRG,
BUYER.OH_FullName AS BUYER_NAME,
CASE WHEN Client_MF_Billing_Job_Cost_PIVOT.FUEL + Client_MF_Billing_Job_Cost_PIVOT.WAR IS NULL
THEN 0 ELSE Client_MF_Billing_Job_Cost_PIVOT.FUEL + Client_MF_Billing_Job_Cost_PIVOT.WAR END AS SUR_AMT1,
(packing.MB_PD_Units * part.OP_Weight) * (CASE WHEN rate IS NULL THEN 0 ELSE RATE END + (CASE WHEN JS_TransportMode = 'AIR' THEN CASE WHEN FUEL_LOOKUP IS NULL
THEN 0 ELSE FUEL_LOOKUP END ELSE 0 END)) AS TITLE_AMT,
consol.JK_CustomDate1 AS LOAD_DATE_OLD,
docket.WD_DocketID,
orderHeader.JD_IsCancelled,
CASE WHEN RATE IS NULL THEN 0 ELSE rate END AS RATE,
packing.MB_PD_Units * part.OP_Weight * CASE WHEN Client_Tariff_Job_Rate.RATE IS NULL THEN 0 ELSE rate END AS FRT_AMT,
part.OP_PK,
CASE WHEN LEN(part.OP_CustomAttrib2)= 1 THEN '0' + OP_CustomAttrib2 ELSE OP_CustomAttrib2 END AS ISSUE_NUMBERx,
'9' + LEFT(dbo.Client_PadString(part.OP_CustomAttrib2, '0', 2), 2) AS ISSUE_NUMBER,
Client_Consol.ETD AS LOAD_DATE,
CASE WHEN docketLine.WE_CustomAttrib3 IS NULL THEN '' ELSE SUBSTRING(docketLine.WE_CustomAttrib3, 7, 5) END AS UPC_CODE,
BUYER.OH_PK AS BUYER_PK,
CLIENT.OH_PK AS CLIENT_PK,
CASE WHEN LEN(SUBSTRING(part.OP_PartNum,1, CASE WHEN CHARINDEX('-', part.OP_PartNum) > 0 THEN CHARINDEX('-', part.OP_PartNum) - 1 ELSE 0 END))
= 0 THEN OU_LocalPartNumber ELSE SUBSTRING(part.OP_PartNum, 1, CASE WHEN CHARINDEX('-',
part.OP_PartNum) > 0 THEN CHARINDEX('-', part.OP_PartNum) - 1 ELSE 0 END) END AS MAG_CODE,
CASE WHEN JS_TransportMode = 'AIR' THEN (FUEL_LOOKUP) * (ROUND(packing.MB_PD_Units * part.OP_Weight + .5, 0)) ELSE 0 END AS SUR_AMT,
CASE WHEN JS_TransportMode = 'AIR' THEN FUEL_LOOKUP ELSE 0 END AS FUEL1,
Client_Tariff_Job_Rate.WAR_LOOKUP AS SUGGESTED_WAR,
Client_Tariff_Job_Rate.FUEL_LOOKUP AS SUGGESTED_FUEL,
Client_Tariff_Job_Rate.SHIPPING_LINE,
OrgMiscServ.OM_CustomAttrib1,
OrgMiscServ.OM_CustomDate1,
CLIENT.OH_PK AS ClientPK,
part.OP_Weight,
packing.MB_PD_Units * part.OP_Weight AS FRT_WEIGHT,
packing.MB_PD_Units * part.OP_Weight + Client_CHRG_PALLET.PALLET_KG_PORTION AS FRT_WEIGHT_GROSS,
(packing.MB_PD_Units * part.OP_Weight + Client_CHRG_PALLET.PALLET_KG_PORTION)
* CASE WHEN Client_Tariff_Job_Rate.RATE IS NULL THEN 0 ELSE rate END AS FRT_AMT_GROSS,
(packing.MB_PD_Units * part.OP_Weight + Client_CHRG_PALLET.PALLET_KG_PORTION) * (CASE WHEN rate IS NULL
THEN 0 ELSE RATE END + (CASE WHEN JS_TransportMode = 'AIR' THEN CASE WHEN FUEL_LOOKUP IS NULL
THEN 0 ELSE FUEL_LOOKUP END ELSE 0 END)) AS TITLE_AMT_GROSS,
orderHeader.JD_PK,
orderHeader.JD_OrderNumber,
Client_Tariff_Job_Rate.ONWARD_DELIVERY,
packing.MB_PD_Units * part.OP_Weight * CASE WHEN Client_Tariff_Job_Rate.ONWARD_DELIVERY IS NULL
THEN 0 ELSE ONWARD_DELIVERY END AS ONWARD_DELIVERY_AMT,
docketLine.WE_CustomDecimal4 AS COVER_PRICE,
CLIENT.OH_FullName,
(packing.MB_PD_Units * (part.OP_Weight + 0.009) + Client_CHRG_PALLET.PALLET_KG_PORTION)
* CASE WHEN Client_Tariff_Job_Rate.RATE IS NULL THEN 0 ELSE rate END AS FRT_AMT_GROSS_UPLIFT,
(packing.MB_PD_Units * (part.OP_Weight + 0.009) + Client_CHRG_PALLET.PALLET_KG_PORTION)
* (CASE WHEN rate IS NULL THEN 0 ELSE RATE END + (CASE WHEN JS_TransportMode = 'AIR' THEN CASE WHEN FUEL_LOOKUP IS NULL
THEN 0 ELSE FUEL_LOOKUP END ELSE 0 END)) AS TITLE_AMT_GROSS_UPLIFT,
packing.MB_PD_Units * (part.OP_Weight + 0.009) AS FRT_WEIGHT_UPLIFT,
packing.MB_PD_Units * (part.OP_Weight + 0.009) + Client_CHRG_PALLET.PALLET_KG_PORTION AS FRT_WEIGHT_GROSS_UPLIFT,
part.OP_Weight + 0.009 AS COPY_KG_UPLIFT,
(packing.MB_PD_Units * (part.OP_Weight + 0.009)) * (CASE WHEN rate IS NULL
THEN 0 ELSE RATE END + (CASE WHEN JS_TransportMode = 'AIR' THEN CASE WHEN FUEL_LOOKUP IS NULL
THEN 0 ELSE FUEL_LOOKUP END ELSE 0 END)) AS TITLE_AMT_UPLIFT,
packing.MB_PD_Units * (part.OP_Weight + 0.009) * CASE WHEN Client_Tariff_Job_Rate.RATE IS NULL THEN 0 ELSE rate END AS FRT_AMT_UPLIFT,
packing.MB_PD_Units * (part.OP_Weight + 0.009) * CASE WHEN Client_Tariff_Job_Rate.ONWARD_DELIVERY IS NULL THEN 0 ELSE ONWARD_DELIVERY END AS ONWARD_DELIVERY_AMT_UPLIFT,
packing.MB_PR_PalletRef
FROM Client_whspalletpacking packing WITH (NOLOCK)
inner join whsDocketLine docketLine WITH (NOLOCK) on packing.we_fk =docketline.we_pk
inner join whsDocket docket WITH (NOLOCK) on docketline.we_wd =docket.wd_pk
inner join client_whspallet pallet WITH (NOLOCK) on packing.MB_PD_PR = pallet.MB_PR_PK
inner join jobshipment shipment WITH (NOLOCK) on packing.mb_js= shipment.js_pk
inner join jobOrderHeader orderHeader WITH (NOLOCK) on docket.WD_ExternalReference =OrderHeader.JD_OrderNumber
inner join orgheader Client WITH (NOLOCK) on docket.wd_oh_client= Client.oh_pk
inner join orgheader Buyer WITH (NOLOCK) on packing.MB_PR_OH=Buyer.oh_pk
inner join jobconsol consol WITH (NOLOCK) on packing.mb_jk=consol.jk_pk
INNER JOIN OrgSupplierPart part WITH (NOLOCK) ON docketline.WE_OP = part.OP_PK
inner join OrgPartRelation WITH (NOLOCK) on part.op_pk=OrgPartRelation.OU_OP
LEFT JOIN RefUNLOCO As DestUNLOCO WITH (NOLOCK) On DestUNLOCO.RL_Code = shipment.JS_RL_NKDestination
LEFT JOIN RefCountry As DestRefCountry WITH (NOLOCK) On DestRefCountry.RN_PK = DestUNLOCO.RL_RN
LEFT OUTER JOIN Client_Tariff_Job_Rate WITH (NOLOCK) ON orderHeader.JD_PK = Client_Tariff_Job_Rate.JOB_ORDER_PK
LEFT OUTER JOIN Client_MF_Billing_Job_Cost_PIVOT WITH (NOLOCK) ON packing.MB_JH = Client_MF_Billing_Job_Cost_PIVOT.JR_JH
inner join Client_CHRG_PALLET WITH (NOLOCK) on packing.WE_FK = Client_CHRG_PALLET.WE_FK and packing.mb_pr_palletref=Client_CHRG_PALLET.mb_pr_palletref ---change
left outer join OrgMiscServ WITH (NOLOCK) on CLIENT.OH_PK =OrgMiscServ.OM_OH
inner join OrgMiscServ AS OrgMiscServ_1 WITH (NOLOCK) on BUYER.OH_PK =OrgMiscServ_1.OM_OH
left outer join Client_Consol WITH (NOLOCK) on consol.jk_pk=Client_Consol.CONSOL_PK
where (DestRefCountry.RN_Desc = 'United States')
ORDER BY CLIENT, TITLE, BUYER, MONTH DESC, WEEKNUM DESC, MODE DESC
答案 0 :(得分：3)
根据您的评论，我怀疑您遇到“predicate pushing”问题（搜索此短语）
观察...... LEFT JOIN上的WHERE将其更改为JOIN
LEFT JOIN RefCountry As DestRefCountry...
....
where (DestRefCountry.RN_Desc = 'United States')
答案 1 :(得分：1)
答案 2 :(得分：1)
我同意Vash的观点，即作为vaiew运行的额外时间可能是由于额外的时间来编译执行计划。
尝试运行此
Set Statistics Time On
Select * from view
and then Set Statistics On
Exec yourSPHere
你会得到类似的东西
SQL Server解析和编译时间：
CPU时间= 0 ms，经过时间= 1 ms。SQL Server执行时间：CPU 时间= 0毫秒，经过时间= 1毫秒。
（5475行受影响）表 'ContactBase'。扫描计数1，逻辑 读取428，物理读取0， 预读读取0，lob逻辑读取 0，lob物理读取0，lob 预读读取0。
SQL Server执行时间：CPU 时间= 47毫秒，经过时间= 470毫秒。
如果“SQL Server解析和编译时间：”解释了两次之间的差异，那么您的答案就是每次Sproc使用缓存的执行计划时View都必须创建执行计划。