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Select Cursor AUTO_FETCH and FORWARD_ONLY elections

    Question

  • We have a scenario where the following select statement performs differently on against two separate instances of our database.  This is being executed from a process using ODBC/SQL Server Native driver 10 version 2009.100.2500.00.  Databases are SQL Server 2008 R2.

    select count(*) from abc where xyz like '%'

    Using the Profiler, in one case we see that AUTO_FETCH is enabled, and the performance of the request is slow, 9+ seconds.  In the other case we see that FORWARD_ONLY is enabled, and the performance is fast, < 1 second.

    Is there some place where there is a configuration for which is used in the event the select statement itself does not specify?

    Saturday, February 01, 2014 1:20 AM

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