Home Forums Article Discussions Article Discussions by Author Discuss content posted by Hugo Kornelis Using IDENTITY as a key column RE: Using IDENTITY as a key column

  • April 20, 2010 at 5:44 am

    #1154470

    Toreador (4/20/2010)

    "SQL Server does not have an efficient way to retrieve rows based on a known value for PersonID."

    There have obviously been too many trick questions lately, as I thought this was one as well!

    SQL Server does have an efficient way to retrieve rows based on a known value for PersonID, and here it is:

    create index indPersonID on Persons (PersonID)

    😉

    This was my reasoning also. Just as the first part (duplicates) would require manual intervention to accomplish, so to would the implementation of SQL Server's efficient way to retrieve rows.

    Wayne
    Microsoft Certified Master: SQL Server 2008
    Author - SQL Server T-SQL Recipes

    If you can't explain to another person how the code that you're copying from the internet works, then DON'T USE IT on a production system! After all, you will be the one supporting it!
    Links:
    For better assistance in answering your questions
    Performance Problems
    Common date/time routines
    Understanding and Using APPLY Part 1 & Part 2