Home Forums SQL Server 2005 SQL Server 2005 Performance Tuning Why are user_lookups > 0 on Clustered Index? RE: Why are user_lookups > 0 on Clustered Index?

  • December 30, 2009 at 2:09 pm

    #1097666

    digitalox (12/30/2009)

    snippet from script:

    CASE WHEN user_lookups > user_seeks AND type_desc IN ('CLUSTERED', 'HEAP', 'UNIQUE CLUSTERED') THEN 'REALIGN'

    I would really question the accuracy of that script. The only valid values for type_desc are HEAP, CLUSTERED, NONCLUSTERED, XML and SPATIAL. 'UNIQUE CLUSTERED' is not a value that type_desc can be, so there's no point in it being in the IN.

    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

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass