以下所用的所有示例目前仅适用于一个销售组织,并且以后我们可能会有更多不同的销售组织编号。如何优化返回数百万条记录的SQL查询
我有6个表有数百万条记录。这些表由执行SSIS包填充。
select count(*) from tmp_materials --11,02,032
select count(*) from tbl_VendorLogoData --20,41,501
select count(*) from TBL_Image_EDV --4,44,063
select count(*) from TBL_EXTPRODUCTATTRIBUTES_EDV -- 2,06,15,572
select count(*) from TBL_Accessories_EDV --10,11,568
select count(*) from TBL_SimilarSku --64,10,408
我有一个用来从这些表
SELECT DISTINCT 'MD' AS [COMPANYCD]
, MAIN.MATERIAL AS [MATERIAL]
, ISNULL(UPPER(IMG.[lowprovider]),'') AS [LOW_IMAGE]
, ISNULL(UPPER(IMG.[midprovider]), '') AS [MID_IMAGE]
, ISNULL(UPPER(IMG.[highprovider]), '') AS [HIGH_IMAGE]
, ISNULL(UPPER(VS.isLogo),'') AS [VENDOR_LOGO]
, ISNULL(UPPER(DS.PROVIDER), '') AS [DATASHEET]
, ISNULL(ACC.AccessoryMaterial, '') AS [OPT_ACC]
, ISNULL(UPPER(ACC.Provider), '') AS [OPT_ACC_PROVIDER]
, ISNULL(SS.Similarsku, '') AS [SIMILAR_SKU]
, ISNULL(UPPER(SS.ProviderName), '') AS [SIMILAR_SKU_PROVIDER]
FROM tmp_materials MAIN WITH (NOLOCK)
LEFT OUTER JOIN TBL_Image_EDV IMG WITH (NOLOCK) ON MAIN.MATERIAL = IMG.MATERIAL AND MAIN.salesOrg = IMG.SalesOrganization
LEFT OUTER JOIN TBL_EXTPRODUCTATTRIBUTES_EDV DS WITH (NOLOCK) ON MAIN.MATERIAL = DS.SKUNBR AND MAIN.salesOrg = DS.SalesOrganization
LEFT OUTER JOIN TBL_Accessories_EDV ACC WITH (NOLOCK) ON MAIN.MATERIAL = ACC.ParentSKU AND MAIN.salesOrg = DS.SalesOrganization
LEFT OUTER JOIN TBL_SimilarSku SS WITH (NOLOCK) ON MAIN.MATERIAL = SS.ParentSKU AND MAIN.salesOrg = DS.SalesOrganization
LEFT OUTER JOIN tbl_VendorLogoData VS WITH (NOLOCK) ON MAIN.MATERIAL = VS.SKU AND MAIN.salesOrg = VS.Salesorganization
WHERE MAIN.salesOrg = @SALESORGANIZATION
AND (CASE WHEN IMG.MATERIAL IS NULL AND DS.SKUNBR IS NULL AND ACC.ParentSKU IS NULL AND SS.ParentSKU IS NULL AND VS.SKU IS NULL
THEN 0 ELSE 1 END) = 1
AND DS.Provider <> 'novalue'
AND SS.RecordIdentifier like '%@@%'
AND ACC.RecordIdentifier like '%@@%'
AND ACC.accessorySku LIKE '%@@%'
这些过程中的参数是@SALESORGANIZATION
这是用来填充报告中选择不同的记录的存储过程。我正在运行这个多个销售组织值。但是对于其中一个销售组织来说,它需要超过5个小时才能生成数据。
看来我需要编写一个循环,但发现难以继续多个连接的任何建议吗?
请指教我如何优化此查询?谢谢你的帮助。
有你有一个执行计划文件SQL Execution Plan
要检查的第一件事是执行计划 – cha
只要给我总计时间添加执行计划,我正在填充它.. – Murtaza
执行计划链接添加在问题中,请参阅select语句计划。 – Murtaza