FIX: SELECT with Subquery Containing BETWEEN Clause is Slow When Starting Range is the Minimum Value

This article was previously published under Q248604
This article has been archived. It is offered "as is" and will no longer be updated.
BUG #: 55938 (SQLBUG_70)
SYMPTOMS
The following query gives varying performance depending on the value you use for col6 in the BETWEEN clause:
SELECT T1.col1 ,T1.col2 ,T1.col3FROM Table1 AS T1WHERE EXISTS(SELECT * FROM TABLE1 AS T2WHERE T1.col1 = T2.col1 and T1.col4 = T2.col4 AND(T2.col5 = 801101 OR T2.col5=801102 OR T2.col5=801105 OR T2.col5=803198 ) AND T2.col6 BETWEEN 1 and 10 )				
A value lower than the one used in the BETWEEN clause must exist in the table. In the preceding example, col6 in TABLE1 must have a value lower than 1 or it will degrade performance.
WORKAROUND
Insert a dummy row in the table with a value for col6 that is lower than the one used in the BETWEEN clause.
STATUS
Microsoft has confirmed this to be a problem in SQL Server 7.0. This problem has been corrected in U.S. Service Pack 2 for Microsoft SQL Server 7.0. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
254561 INF: How to Obtain Service Pack 2 for Microsoft SQL Server 7.0 and Microsoft Data Engine (MSDE) 1.0
For more information, contact your primary support provider.
BETWEEN performance
Properties

Article ID: 248604 - Last Review: 10/22/2013 04:03:22 - Revision: 2.1

Microsoft SQL Server 7.0 Standard Edition

  • kbnosurvey kbarchive kbbug kbfix KB248604
Feedback