以下所用的所有示例目前僅適用於一個銷售組織,並且以後我們可能會有更多不同的銷售組織編號。如何優化返回數百萬條記錄的SQL查詢
我有6個表有數百萬條記錄。這些表由執行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
我有一個用來從這些表
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 '%@@%'
這些過程中的參數是@SALESORGANIZATION
這是用來填充報告中選擇不同的記錄的存儲過程。我正在運行這個多個銷售組織值。但是對於其中一個銷售組織來說,它需要超過5個小時才能生成數據。
看來我需要編寫一個循環,但發現難以繼續多個連接的任何建議嗎?
請指教我如何優化此查詢?謝謝你的幫助。
有你有一個執行計劃文件SQL Execution Plan
要檢查的第一件事是執行計劃 – cha
只要給我總計時間添加執行計劃,我正在填充它.. – Murtaza
執行計劃鏈接添加在問題中,請參閱select語句計劃。 – Murtaza