Oct 12, 2006
I am having no luck reporting this bug on the feedback link. I type in all information and click "Submit" and it just refreshes the page. So, here it is, I hope someone from MS will post this for me.
The problem appears to be a RIGHT OUTER JOIN on a VIEW causes the query to never return, or return very, very slowly. In 2000 SP4 the query returns in 2 seconds, in 2005 (2153) 64bit, it ran for 42 MINUTES before I killed it.
The is a duplication script to show a problem I have. This script uses the AdventureWorks database to demonstrate the problem. This is script is not the best, but shows the problem.
Please no comments on how to work around the problem. This query is generated by a user using and AdHoc reporting tool. I have NO control over how the user or the tool generates the SQL query.
The word "FAILURE" shows the original query which as far as I can tell never returns. The queries after, are different solutions, if I was able to change the user query, which I am not able to do.
-- Create Test Data Table CustomerListTom and Views
USE AdventureWorks
GO
IF EXISTS (SELECT * FROM sys.views WHERE object_id = OBJECT_ID(N'ViewATom'))
DROP VIEW [ViewATom]
IF EXISTS (SELECT * FROM sys.views WHERE object_id = OBJECT_ID(N'ViewBTom'))
DROP VIEW [ViewBTom]
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'CustomerListTom') AND type in (N'U'))
DROP TABLE CustomerListTom
GO
CREATE TABLE [dbo].[CustomerListTom](
[CustomerID] [varchar](6) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[RegionID] [varchar](3) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[FirstName] [dbo].[Name] NOT NULL,
[LastName] [dbo].[Name] NOT NULL,
[EmailAddress] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[AddressLine] [nvarchar](60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[AddressCity] [nvarchar](30) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[AddressState] [nchar](3) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[AddressZip] [nvarchar](15) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[AddressCountry] [dbo].[Name] NOT NULL,
[Phone] [dbo].[Phone] NULL,
[BillAddressLine] [nvarchar](60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[BillAddressCity] [nvarchar](30) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[BillAddressState] [nchar](3) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[BillAddressZip] [nvarchar](15) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[BillAddressCountry] [dbo].[Name] NOT NULL,
[BillPhone] [dbo].[Phone] NULL,
[ModifiedDate] [datetime] NOT NULL,
)
INSERT INTO CustomerListTom
SELECT
CustomerID = RIGHT(cu.AccountNumber,6),
RegionID = RIGHT('000'+CAST(cu.TerritoryID AS VARCHAR(3)),3),
FirstName = ct.FirstName,
LastName = ct.LastName,
EmailAddress = ct.EmailAddress,
AddressLine = ad.AddressLine1,
AddressCity = ad.City,
AddressState = sp.StateProvinceCode,
AddressZip = ad.PostalCode,
AddressCountry = sp.[Name],
Phone = ct.Phone,
BillAddressLine = ad.AddressLine1,
BillAddressCity = ad.City,
BillAddressState = sp.StateProvinceCode,
BillAddressZip = ad.PostalCode,
BillAddressCountry = sp.[Name],
BillPhone = ct.Phone,
ModifiedDate = cu.ModifiedDate
--,*
FROM Sales.Customer cu
JOIN Sales.Individual id ON id.CustomerID = cu.CustomerID
JOIN Person.Contact ct ON ct.ContactID = id.ContactID
JOIN Sales.CustomerAddress ca ON cu.CustomerID = ca.CustomerID
JOIN Person.Address ad ON ad.AddressID = ca.AddressID
JOIN Person.StateProvince sp ON sp.StateProvinceID = ad.StateProvinceID
-- Create a big enough set of data for testing
DECLARE @i INT
SET @i = 1
WHILE (@i < 30)
BEGIN
INSERT INTO CustomerListTom
SELECT TOP 15 PERCENT
CustomerID = RIGHT(cu.AccountNumber,6),
RegionID = RIGHT('000'+CAST(cu.TerritoryID+@i AS VARCHAR(3)),3),
FirstName = ct.FirstName,
LastName = ct.LastName,
EmailAddress = ct.EmailAddress,
AddressLine = ad.AddressLine1,
AddressCity = ad.City,
AddressState = sp.StateProvinceCode,
AddressZip = ad.PostalCode,
AddressCountry = sp.[Name],
Phone = ct.Phone,
BillAddressLine = ad.AddressLine1,
BillAddressCity = ad.City,
BillAddressState = sp.StateProvinceCode,
BillAddressZip = ad.PostalCode,
BillAddressCountry = sp.[Name],
BillPhone = ct.Phone,
ModifiedDate = cu.ModifiedDate + CASE WHEN @i > 3 THEN 10 ELSE -25 END + @i
FROM Sales.Customer cu
JOIN Sales.Individual id ON id.CustomerID = cu.CustomerID
JOIN Person.Contact ct ON ct.ContactID = id.ContactID
JOIN Sales.CustomerAddress ca ON cu.CustomerID = ca.CustomerID
JOIN Person.Address ad ON ad.AddressID = ca.AddressID
JOIN Person.StateProvince sp ON sp.StateProvinceID = ad.StateProvinceID
SET @i = @i + 1
END
-- Cleanup - Delete Dups for PK
DELETE FROM CustomerListTom
WHERE CustomerID+RegionID IN (
SELECT CustomerID+RegionID
FROM CustomerListTom cu
GROUP BY CustomerID, RegionID
HAVING COUNT(*) > 1)
ALTER TABLE [CustomerListTom]
ADD CONSTRAINT [PK_CustomerListTom] PRIMARY KEY CLUSTERED
(
[CustomerID] ASC,
[RegionID] ASC
)
GO
-- Create Views
GO
CREATE VIEW ViewATom
AS
SELECT *
FROM CustomerListTom cu
WHERE cu.RegionID = '004'
UNION
SELECT *
FROM CustomerListTom cu
WHERE CustomerID NOT IN
(SELECT CustomerID FROM CustomerListTom c2 WHERE c2.RegionID = '004')
AND (CustomerID + CONVERT(char(8), ModifiedDate, 112) + RegionID IN
(SELECT MAX(CustomerID + CONVERT(char(8), ModifiedDate, 112) + RegionID)
FROM CustomerListTom
GROUP BY CustomerID))
GO
CREATE VIEW ViewBTom
AS
SELECT DISTINCT CustomerID
FROM CustomerListTom
GO
QUERY:
USE AdventureWorks
-- FAILURE
-- This query FAILS to return in over 15 mins, cancelled
SELECT TABLEB.CustomerID,
TABLEC.RegionID,
TABLEC.LastName,
TABLEC.FirstName
FROM ViewATom TABLEA
RIGHT OUTER JOIN ViewBTom TABLEB ON TABLEA.CustomerID = TABLEB.CustomerID
RIGHT OUTER JOIN CustomerListTom TABLEC ON TABLEC.CustomerID = TABLEB.CustomerID
WHERE TABLEB.CustomerID IN
('012870','012997','011000','011001','011002','011003','011004','011005','011006','011007',
'011008','011009','011010','011011','011012','011013','011014','011015','011016','011017',
'011018','011019','011020','011150','011153','011144','017230','017220','017254','017257',
'025338','025333','025338','025397','025389','025424','025483','025485','025682','025673',
'029478','029405','029402','029317','029109','018393'
)
return
-- SOLUTIONS
-- Change WHERE TABLEB to WHERE TABLEA, this query returns in less than 1 second
SELECT TABLEB.CustomerID,
TABLEC.RegionID,
TABLEC.LastName,
TABLEC.FirstName
FROM ViewATom TABLEA
RIGHT OUTER JOIN ViewBTom TABLEB ON TABLEA.CustomerID = TABLEB.CustomerID
RIGHT OUTER JOIN CustomerListTom TABLEC ON TABLEC.CustomerID = TABLEB.CustomerID
WHERE TABLEA.CustomerID IN
('012870','012997','011000','011001','011002','011003','011004','011005','011006','011007',
'011008','011009','011010','011011','011012','011013','011014','011015','011016','011017',
'011018','011019','011020','011150','011153','011144','017230','017220','017254','017257',
'025338','025333','025338','025397','025389','025424','025483','025485','025682','025673',
'029478','029405','029402','029317','029109','018393'
)
return
-- Remove RIGHT OUTER on TABLEB, this Query returns in less than 2 seconds
SELECT TABLEB.CustomerID,
TABLEC.RegionID,
TABLEC.LastName,
TABLEC.FirstName
FROM ViewATom TABLEA
JOIN ViewBTom TABLEB ON TABLEA.CustomerID = TABLEB.CustomerID
RIGHT OUTER JOIN CustomerListTom TABLEC ON TABLEC.CustomerID = TABLEB.CustomerID
WHERE TABLEB.CustomerID IN
('012870','012997','011000','011001','011002','011003','011004','011005','011006','011007',
'011008','011009','011010','011011','011012','011013','011014','011015','011016','011017',
'011018','011019','011020','011150','011153','011144','017230','017220','017254','017257',
'025338','025333','025338','025397','025389','025424','025483','025485','025682','025673',
'029478','029405','029402','029317','029109','018393'
)
return
-- Drop PK and run ORIGINAL query, returns in less than 4 seconds
IF EXISTS (SELECT * FROM sys.indexes WHERE object_id = OBJECT_ID(N'[dbo].[CustomerListTom]') AND name = N'PK_CustomerListTom')
ALTER TABLE [dbo].[CustomerListTom] DROP CONSTRAINT [PK_CustomerListTom]
GO
SELECT TABLEB.CustomerID,
TABLEC.RegionID,
TABLEC.LastName,
TABLEC.FirstName
FROM ViewATom TABLEA
RIGHT OUTER JOIN ViewBTom TABLEB ON TABLEA.CustomerID = TABLEB.CustomerID
RIGHT OUTER JOIN CustomerListTom TABLEC ON TABLEC.CustomerID = TABLEB.CustomerID
WHERE TABLEB.CustomerID IN
('012870','012997','011000','011001','011002','011003','011004','011005','011006','011007',
'011008','011009','011010','011011','011012','011013','011014','011015','011016','011017',
'011018','011019','011020','011150','011153','011144','017230','017220','017254','017257',
'025338','025333','025338','025397','025389','025424','025483','025485','025682','025673',
'029478','029405','029402','029317','029109','018393'
)
return
-- Create PK with NONCLUSTERED and run ORIGINAL query, returns in less than 1 second
IF EXISTS (SELECT * FROM sys.indexes WHERE object_id = OBJECT_ID(N'[dbo].[CustomerListTom]') AND name = N'PK_CustomerListTom')
ALTER TABLE [dbo].[CustomerListTom] DROP CONSTRAINT [PK_CustomerListTom]
GO
ALTER TABLE [CustomerListTom]
ADD CONSTRAINT [PK_CustomerListTom] PRIMARY KEY NONCLUSTERED
(
[CustomerID] ASC,
[RegionID] ASC
)
GO
SELECT TABLEB.CustomerID,
TABLEC.RegionID,
TABLEC.LastName,
TABLEC.FirstName
FROM ViewATom TABLEA
RIGHT OUTER JOIN ViewBTom TABLEB ON TABLEA.CustomerID = TABLEB.CustomerID
RIGHT OUTER JOIN CustomerListTom TABLEC ON TABLEC.CustomerID = TABLEB.CustomerID
WHERE TABLEB.CustomerID IN
('012870','012997','011000','011001','011002','011003','011004','011005','011006','011007',
'011008','011009','011010','011011','011012','011013','011014','011015','011016','011017',
'011018','011019','011020','011150','011153','011144','017230','017220','017254','017257',
'025338','025333','025338','025397','025389','025424','025483','025485','025682','025673',
'029478','029405','029402','029317','029109','018393'
)
return
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