FIX: On a computer that is running SQL Server 2005 and that has multiple processors, you may receive incorrect results when you run a query that contains an inner join

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Article ID: 935789 - View products that this article applies to.
Bug #: 50001083 (SQL Hotfix)
Microsoft distributes Microsoft SQL Server 2005 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2005 fix release.
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SYMPTOMS

Consider the following scenario:
  • You have a computer that is running Microsoft SQL Server 2005, and the computer has multiple processors.
  • You run a query that contains an inner join.
  • The inner join uses an equal operator to compare two columns.
  • One of the columns has the INT data type. The other column has the BIGINT data type.
  • The query returns values of the columns that are less than 0 or that are more than 4,294,967,295.
  • The query generates a parallel execution plan.
In this scenario, you may receive incorrect results when you run the query.

CAUSE

This problem occurs because the parallel execution plan for the query contains a Bitmap Filter operator. A bug in the Bitmap Filter operator may cause SQL Server to handle physical operators incorrectly.

RESOLUTION

The fix for this issue was first released in Cumulative Update (build 3161). For more information about how to obtain this cumulative update package for SQL Server 2005 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
935356 Cumulative update package (build 3161) for SQL Server 2005 Service Pack 2
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2005 fix release. Microsoft recommends that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
937137 The SQL Server 2005 builds that were released after SQL Server 2005 Service Pack 2 was released
Microsoft SQL Server 2005 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2005 Service Pack 2 hotfix to an installation of SQL Server 2005 Service Pack 2. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about what files are changed, and for information about any prerequisites to apply the cumulative update package that contains the hotfix that is described in this Microsoft Knowledge Base article, click the following article number to view the article in the Microsoft Knowledge Base:
935356 Cumulative update package (build 3161) for SQL Server 2005 Service Pack 2 is available

Steps to reproduce the problem

To reproduce the problem, run the following statements in SQL Server 2005.
Use tempdb
go
create table orders( c1 int )
go
declare @i int
select @i=0
while @i < 100000
begin
insert orders values(@i)
select @i=@i+1
end
create table t1(c1 int not null)
go
create table t2(c1 bigint not null)
go
insert t1 select c1 - 1000 from orders
go
insert t2 select c1 - 1000 from orders
go
-- The following statement would return an incorrect result
select * from t1 inner join t2
on t1.c1 = t2.c1 where t2.c1 + 1 < 0
option (maxdop 2, hash join)
go

REFERENCES

For more information about the list of builds that are available after SQL Server Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
937137 The SQL Server 2005 builds that were released after SQL Server 2005 Service Pack 2 was released
For more information about the Incremental Servicing Model for SQL Server, click the following article number to view the article in the Microsoft Knowledge Base:
935897 An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
For more information about how to obtain SQL Server 2005 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
913089 How to obtain the latest service pack for SQL Server 2005
For more information about the new features and the improvements in SQL Server 2005 Service Pack 2, visit the following Microsoft Web site:
http://go.microsoft.com/fwlink/?LinkId=71711
For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:
822499 New naming schema for Microsoft SQL Server software update packages
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Properties

Article ID: 935789 - Last Review: October 22, 2007 - Revision: 2.3
APPLIES TO
  • Microsoft SQL Server 2005 Standard Edition
  • Microsoft SQL Server 2005 Developer Edition
  • Microsoft SQL Server 2005 Enterprise Edition
  • Microsoft SQL Server 2005 Enterprise X64 Edition
  • Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
  • Microsoft SQL Server 2005 Standard X64 Edition
  • Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems
  • Microsoft SQL Server 2005 Workgroup Edition
Keywords: 
kbsql2005engine kbhotfixrollup kbfix kbpubtypekc kbqfe kbexpertiseadvanced KB935789

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