FIX: Distributed Query Predicate not Remoted when IDBSchemaRowset not Supported

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Article ID: 235060 - View products that this article applies to.
This article was previously published under Q235060
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BUG #: 55863 (SQLBUG_70) BUG #: 55630 (SQLBUG_70)
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SYMPTOMS

A distributed query against a provider, which does not support the IDBSchemaRowset interface, may not ship predicates to the remote server for non-string datatypes. This may cause a performance degradation as data is returned to SQL Server and filtered locally, rather than at the remote datasource. Using the Microsoft OLE DB Provider for ODBC (MSDASQL) with ODBC 2.5 and earlier version drivers may expose this problem.

CAUSE

If the provider does not support the IDBSchemaRowset interface SQL Server sees all columns as collation-incompatible by default. This prevents remoting even for non-string datatypes such as integer, decimal, numeric, where collation does not apply.

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.

Properties

Article ID: 235060 - Last Review: October 21, 2013 - Revision: 2.1
APPLIES TO
  • Microsoft SQL Server 7.0 Standard Edition
Keywords: 
kbnosurvey kbarchive kbbug kbfix KB235060

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