FIX: Distributed Query Predicate not Remoted when IDBSchemaRowset not Supported

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.

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.

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:For more information, contact your primary support provider.