Home Forums SQL Server 2008 SQL Server 2008 Performance Tuning Performance on 10 million row table RE: Performance on 10 million row table

  • September 18, 2013 at 5:14 am

    #1651057

    Why so complex?

    Write the query in the simplest possible way. If that query form proves, in testing, to have performance problems, consider alternates.

    SELECT <column names> FROM ProductionTest WHERE DateTimeStamp >= '<date> 05:55' and DateTimeStamp <= '<date> 14:05'

    If the counts are logged every 5 minutes, then that will catch the one before 6AM and the one after 2PM and all in between. If the counts are logged at different intervals, then you'd need to adjust the times

    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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