Home Forums SQL Server 2005 SQL Server 2005 Performance Tuning Costly update trigger -70,000,000 logical reads for 30,000 rows updated! RE: Costly update trigger -70,000,000 logical reads for 30,000 rows updated!

  • February 2, 2009 at 12:50 pm

    #936680

    TheSQLGuru (2/2/2009)

    2) is the join column a primary key or unique index value? Looks like cartesian product if not.

    Agreed. That's one reason I want see the actual exec plan, see what the row counts really are at various points of the query.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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