因此，我要查询一个永远不会完成的报告。我已经允许它运行20分钟以上，但尚未完成。这是查询：
import *诊断此问题的第一步是对被引用的视图（DECLARE @start DATE, @end DATE
SET @start = '7-1-2019'
SET @end = '8-20-2019'
SELECT cg.*
,ba.std_StandardAcctNo AS bonus_acct
FROM [CustSalesTrend_Growth] cg
LEFT JOIN (
SELECT DISTINCT std_standardacctno
FROM [CustSalesTrend_Growth]
WHERE eleph_Period_Date BETWEEN @Start
AND @End
OR ideal_Period_Date BETWEEN @Start
AND @End
) ba ON ba.std_StandardAcctNo = cg.std_StandardAcctNo
AND cg.Period_Date >= @Start
AND cg.Period_Date <= @End
WHERE [Appearance_Count] <> 0
AND Period_gp <> 0
ORDER BY cg.std_StandardAcctNo
）进行一次简单的select *操作，它平均将在30秒左右完成运行，并提取12,000条记录。鉴于此，我对前面的查询如何为执行增加如此大的复杂性到永远无法完成的点感到困惑。在我看来，上面的查询相对简单，因此对于为什么会发生这种情况有任何想法吗？
编辑：查询视图CustSalesTrend_Growth
CustSalesTrend_Growth我在源表Complete_Sales_V2上存在索引。如下：
索引说明：
CREATE VIEW [dbo].[CustSalesTrend_Growth]
AS
WITH basedata
AS (
SELECT DISTINCT a.order_num
,a.Period_Date
,a.year AS std_the_year
,a.Month AS std_the_month
,a.customer_alias AS std_StandardAcctNo
,b.SalesPerson_name
,isnull(ac.counter, 0) [Appearance_Count]
,isnull(b.[Year], 0) [The_Year]
,isnull(b.[Month], 0) [The_Month]
,isnull(b.Customer_Alias, 0) [CustomerName]
,sum(isnull(b.Gallons, 0)) [Gallon_Qty]
,sum(isnull(b.[Total Sale], 0)) [Total_Sale]
,sum(isnull(b.[Gross Profit], 0)) [Total_Gross_Profit]
FROM (
SELECT DISTINCT a.year
,a.month
,b.Customer_Alias
,convert(INTEGER, convert(VARCHAR(4), a.Year) + right('00' + convert(VARCHAR(2), a.month), 2)) AS order_num
,convert(DATE, convert(VARCHAR(2), a.Month) + '/01/' + convert(VARCHAR(4), a.Year)) AS Period_Date
FROM Complete_Sales_V2 a
JOIN (
SELECT DISTINCT Customer_Alias
FROM Complete_Sales_V2
) b ON 1 = 1
) a
JOIN PDI_Warehouse_2049_01.dbo.Appearance_Count ac ON a.Customer_Alias = ac.customer_alias
LEFT JOIN Complete_Sales_V2 b ON a.Customer_Alias = b.Customer_Alias
AND a.Month = b.Month
AND a.Year = b.Year
GROUP BY a.order_num
,a.Period_Date
,a.year
,a.Month
,a.Customer_Alias
,b.SalesPerson_Name
,ac.counter
,b.[Year]
,b.[Month]
,b.Customer_Alias
)
,saleslist
AS (
SELECT DISTINCT SalesPerson_Name
,Appearance_Count
,Period_Date
,std_the_month
,std_the_year
,std_StandardAcctNo
,isnull(sum(Total_Gross_Profit), 0) Period_GP
FROM basedata
GROUP BY SalesPerson_Name
,Appearance_Count
,Period_Date
,std_StandardAcctNo
,std_the_month
,std_the_year
)
,core_GP
AS (
SELECT DISTINCT a.Customer_Alias
,convert(DATE, convert(VARCHAR(2), a.month) + '/01/' + convert(VARCHAR(4), a.year)) AS Period_Date
,sum(a.[Gross Profit]) AS Period_GP
FROM Complete_Sales_V2 a
JOIN PDI_Warehouse_2049_01.dbo.appearance_count ac ON ac.customer_alias = a.Customer_Alias
GROUP BY counter
,convert(DATE, convert(VARCHAR(2), a.month) + '/01/' + convert(VARCHAR(4), a.year))
,a.Customer_Alias
)
,GroupedData
AS (
SELECT DISTINCT cgp.std_StandardAcctNo
,cgp.Period_Date
,sum(cgp.[Total_Gross_Profit]) AS Period_GP
,Appearance_Count
FROM basedata cgp
GROUP BY cgp.std_StandardAcctNo
,cgp.Period_Date
,Appearance_Count
)
,GP_Grouping
AS (
SELECT std_StandardAcctNo
,min(Period_Date) AS range_start
,max(Period_Date) AS range_end
,count(*) AS range_count
,GP_group
FROM (
SELECT std_StandardAcctNo
,Period_Date
,CASE
WHEN Period_GP = 0
THEN 0
ELSE 1
END AS GP_Group
,row_number() OVER (
PARTITION BY std_StandardAcctNo
,CASE
WHEN Period_GP = 0
THEN 0
ELSE 1
END ORDER BY Period_Date
) AS rn
,row_number() OVER (
PARTITION BY std_StandardAcctNo
,CASE
WHEN Period_GP = 0
THEN 0
ELSE 1
END ORDER BY Period_Date
) - row_number() OVER (
PARTITION BY std_StandardAcctNo ORDER BY Period_Date
) AS grp
,row_number() OVER (
PARTITION BY std_StandardAcctNo ORDER BY Period_Date
) AS grp2
FROM GroupedData
) a
GROUP BY std_StandardAcctNo
,grp
,GP_Group
)
,GP_Group2
AS (
SELECT gd.*
,max(gpg_prev.range_end) AS last_zero_group -- , gpg.range_count
FROM GroupedData gd
LEFT JOIN GP_Grouping gpg ON gd.std_StandardAcctNo = gpg.std_StandardAcctNo
AND gd.Period_Date BETWEEN gpg.range_start
AND gpg.range_end
LEFT JOIN (
SELECT *
FROM GP_Grouping
WHERE GP_Group = 0
AND range_count >= 12
) gpg_prev ON gpg_prev.std_StandardAcctNo = gd.std_StandardAcctNo
AND gpg.range_start > gpg_prev.range_end
GROUP BY gd.std_StandardAcctNo
,Period_Date
,Period_GP
,Appearance_Count
,gpg.range_count
)
,GP_Group3
AS (
SELECT gd.*
,Appearance_Cnt_Rel = CASE
WHEN gd.last_zero_group IS NULL
THEN Appearance_Count
ELSE ROW_NUMBER() OVER (
PARTITION BY gd.std_StandardAcctNo
,gd.last_zero_group ORDER BY gd.Period_Date
)
END
FROM GP_Group2 gd
)
,almost_done
AS (
SELECT DISTINCT bd.order_num
,bd.Period_Date
,bd.std_the_year
,bd.std_the_month
,bd.std_StandardAcctNo
,CASE
WHEN bd.[Appearance_Count] > 0
THEN bd.[Appearance_Count]
WHEN isnull(c.Appearance_Count, 0) > 0
THEN c.Appearance_Count + 1
WHEN isnull(d.Appearance_Count, 0) > 0
THEN d.Appearance_Count + 2
WHEN isnull(e.Appearance_Count, 0) > 0
THEN e.Appearance_Count + 3
ELSE 0
END AS Appearance_Count
,bd.[The_Year]
,bd.[The_Month]
,bd.[CustomerName]
,bd.[Gallon_Qty]
,bd.[Total_Sale]
,isnull(c.Appearance_Count, 0) AS Prev_Count
,isnull(d.Appearance_Count, 0) AS month2_Count
,isnull(e.Appearance_Count, 0) AS month3_Count
,CASE
WHEN bd.SalesPerson_Name IS NOT NULL
THEN bd.SalesPerson_Name
WHEN c.SalesPerson_Name IS NOT NULL
THEN c.SalesPerson_Name
WHEN d.SalesPerson_Name IS NOT NULL
THEN d.SalesPerson_Name
WHEN e.SalesPerson_Name IS NOT NULL
THEN e.SalesPerson_Name
ELSE 'NA'
END [SalesPerson]
,CASE
WHEN bd.[Appearance_Count] IS NULL
AND c.[Appearance_Count] IS NULL
AND d.[Appearance_Count] IS NULL
THEN e.Period_GP
ELSE 0
END [Lost_Gross_Profit]
,CASE
WHEN bd.Appearance_Count = 1
THEN bd.Total_Gross_Profit
ELSE 0
END AS 'New_Cust_GP'
,CASE
WHEN bd.Appearance_Count <= 12
THEN bd.Total_Gross_Profit
ELSE 0
END AS 'Young_Cust_GP'
,CASE
WHEN bd.Appearance_Count > 12
THEN bd.Total_Gross_Profit
ELSE 0
END AS 'Old_Cust_GP'
,ROW_NUMBER() OVER (
PARTITION BY bd.std_StandardAcctNo
,bd.std_The_Year
,bd.std_The_Month ORDER BY (bd.std_StandardAcctNo) DESC
) AS UNI_Period
,bd.Total_Gross_Profit AS SalesP_GP
,isnull(cg.Period_gp, 0) AS Period_gp
,CASE
WHEN isnull(b_prev.Period_gp, 0) > 0
THEN isnull(b_prev.Period_gp, 0)
WHEN isnull(d.Period_gp, 0) > 0
THEN isnull(d.Period_gp, 0)
WHEN isnull(e.Period_gp, 0) > 0
THEN isnull(e.Period_gp, 0)
ELSE 0
END AS Prev_Period_GP
,h.Mat_MoM_Shift
,CASE
WHEN isnull(b_prev.Period_gp, 0) > 0
THEN isnull(b_prev.Period_gp, 0)
WHEN isnull(d.Period_gp, 0) > 0
THEN isnull(d.Period_gp, 0)
WHEN isnull(e.Period_gp, 0) > 0
THEN isnull(e.Period_gp, 0)
ELSE 0
END * h.Mat_MoM_Shift AS Expected_GP
,isnull(c.Period_gp, 0) AS True_Prev_GP
,isnull(d.Period_gp, 0) AS True_2month_GP
,isnull(e.Period_gp, 0) AS True_3month_GP
,ideal_candidate = CASE
WHEN ((isnull(c.Period_gp, 0) + isnull(d.Period_gp, 0) + isnull(bd.Total_Gross_Profit, 0)) / 3 >= 800)
AND isnull(c.Period_gp, 0) >= 150
AND isnull(d.Period_gp, 0) >= 150
AND isnull(bd.Total_Gross_Profit, 0) >= 150
THEN 'Y'
ELSE 'N'
END
,eleph_candidate = CASE
WHEN ((isnull(c.Period_gp, 0) + isnull(d.Period_gp, 0) + isnull(bd.Total_Gross_Profit, 0)) / 3 >= 5000)
AND isnull(c.Period_gp, 0) >= 1000
AND isnull(d.Period_gp, 0) >= 1000
AND isnull(bd.Total_Gross_Profit, 0) >= 1000
THEN 'Y'
ELSE 'N
'
END
FROM basedata bd
LEFT JOIN core_GP b_prev ON bd.std_StandardAcctNo = b_prev.Customer_Alias
AND b_prev.Period_Date = dateadd(month, - 1, bd.Period_Date)
LEFT JOIN saleslist c ON c.std_StandardAcctNo = bd.std_StandardAcctNo
AND c.Period_Date = dateadd(month, - 1, bd.Period_Date)
AND CASE
WHEN bd.SalesPerson_Name IS NOT NULL
THEN bd.SalesPerson_Name
ELSE c.SalesPerson_Name
END = c.SalesPerson_Name
LEFT JOIN saleslist d ON d.std_StandardAcctNo = bd.std_StandardAcctNo
AND d.Period_Date = dateadd(month, - 2, bd.Period_Date)
AND CASE
WHEN bd.SalesPerson_Name IS NOT NULL
THEN bd.SalesPerson_Name
WHEN c.SalesPerson_Name IS NOT NULL
THEN c.SalesPerson_Name
ELSE d.SalesPerson_Name
END = d.SalesPerson_Name
LEFT JOIN saleslist e ON e.std_StandardAcctNo = bd.std_StandardAcctNo
AND e.Period_Date = dateadd(month, - 3, bd.Period_Date)
AND CASE
WHEN bd.SalesPerson_Name IS NOT NULL
THEN bd.SalesPerson_Name
WHEN c.SalesPerson_Name IS NOT NULL
THEN c.SalesPerson_Name
WHEN d.SalesPerson_Name IS NOT NULL
THEN d.SalesPerson_Name
ELSE e.SalesPerson_Name
END = e.SalesPerson_Name
LEFT JOIN RicoCustom.dbo.[Rico_Global_Monthly] h ON h.month = bd.std_the_month
LEFT JOIN core_GP cg ON bd.std_StandardAcctNo = cg.Customer_Alias
AND cg.Period_Date = bd.Period_Date
)
,get_ideal
AS (
SELECT DISTINCT min(ad.Period_Date) AS ideal_Period_Date
,ad.std_StandardAcctNo
,rc.last_zero_group
FROM almost_done ad
LEFT JOIN GP_Group3 rc ON rc.Period_Date = ad.Period_Date
AND rc.std_StandardAcctNo = ad.std_StandardAcctNo
AND rc.Period_GP = ad.Period_gp
WHERE ideal_candidate = 'Y'
AND (
rc.Appearance_Cnt_Rel BETWEEN 3
AND 6
)
GROUP BY ad.std_StandardAcctNo
,rc.last_zero_group
)
,get_elephant
AS (
SELECT DISTINCT min(ad.Period_Date) AS eleph_Period_Date
,ad.std_StandardAcctNo
,rc.last_zero_group
FROM almost_done ad
LEFT JOIN GP_Group3 rc ON rc.Period_Date = ad.Period_Date
AND rc.std_StandardAcctNo = ad.std_StandardAcctNo
AND rc.Period_GP = ad.Period_gp
WHERE eleph_candidate = 'Y'
AND (
rc.Appearance_Cnt_Rel BETWEEN 3
AND 36
)
GROUP BY ad.std_StandardAcctNo
,rc.last_zero_group
)
SELECT rc.Appearance_Cnt_Rel
,gi.ideal_Period_Date
,ge.eleph_Period_Date
,ad.*
FROM almost_done ad
LEFT JOIN GP_Group3 rc ON rc.Period_Date = ad.Period_Date
AND rc.std_StandardAcctNo = ad.std_StandardAcctNo
AND rc.Period_GP = ad.Period_gp
LEFT JOIN get_ideal gi ON ad.std_StandardAcctNo = gi.std_StandardAcctNo
AND ad.Period_Date = gi.ideal_Period_Date
LEFT JOIN get_elephant ge ON ad.std_StandardAcctNo = ge.std_StandardAcctNo
AND ad.Period_Date = ge.eleph_Period_Date
WHERE order_num > 201001
索引键：
clustered, unique, primary key located on PRIMARY
答案 0 :(得分：1)
由于您说可以查询视图，因此我建议在执行查询之前将您的视图选择到临时表中。这将简化查询计划，使您可以检查它。并有望加快速度。
我注意到在原始查询中，您正在联接条件中针对@Start和@End筛选主表。我想你不想那样做。我认为应该在where子句中。
您还可以预先过滤临时表，只要您可以确定可能需要哪些记录即可（我不能，因为您比较了3个不同的日期）。
DECLARE @start DATE = '7-1-2019', @end DATE = '8-20-2019';
-- Best practice is to list the actual columns required
-- You may also be able to pre-filter here based on @start and @end
-- But as you compare them to 3 different columns in the query I don't know enough about your logic to know if this is possible or not
-- You can also add indexes to the temp table if they would speed things up
select *
into #cg
from [CustSalesTrend_Growth];
SELECT cg.*
, ba.std_StandardAcctNo AS bonus_acct
FROM #cg cg
LEFT JOIN (
SELECT DISTINCT std_standardacctno
FROM #cg
WHERE eleph_Period_Date BETWEEN @Start AND @End
OR ideal_Period_Date BETWEEN @Start AND @End
) ba ON ba.std_StandardAcctNo = cg.std_StandardAcctNo
WHERE [Appearance_Count] <> 0
AND Period_gp <> 0
AND cg.Period_Date >= @Start
AND cg.Period_Date <= @End
ORDER BY cg.std_StandardAcctNo;
drop table #cg;
答案 1 :(得分：0)
尝试使用CTE的此查询。我没有架构，因此我的某些假设可能不正确。在执行之前，请先验证查询。
WITH t1 AS
(
SELECT *
FROM CustSalesTrend_Growth
WHERE Appearance_Count <> 0
AND Period_gp <> 0
AND Period_Date between @Start and @End
),
t2 AS
(
SELECT DISTINCT std_StandardAcctNo
FROM CustSalesTrend_Growth
WHERE eleph_Period_Date BETWEEN @Start AND @End
OR ideal_Period_Date BETWEEN @Start AND @End
)
select t1.*, t2.std_StandardAcctNo AS bonus_acct
FROM t1
LEFT JOIN t2 ON t2.std_StandardAcctNo = t1.std_StandardAcctNo
ORDER BY t2.std_StandardAcctNo