Home Forums Article Discussions Article Discussions by Author Discuss content posted by Syed Iqbal Remove Duplicate Records RE: Remove Duplicate Records

  • June 13, 2011 at 10:13 pm

    #1338150

    AmolNaik (6/13/2011)

    Smart technique. But beware SET ROWCOUNT is set to be deprecated in the future releases, instead you could use TOP 1.

    An alternate method to remove duplicates is to use ROW_NUMBER() technique, basically ordering the resultset over the column phone number and then deleting row where row_number > 1, this will make sure that only 1 resultset is retained and any other repeating instances are deleted.

    Thanks!

    It'll also be much faster than the looping method. 🙂

    --Jeff Moden

    RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
    First step towards the paradigm shift of writing Set Based code:
    ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

    Change is inevitable... Change for the better is not.

    Helpful Links:
    How to post code problems
    How to Post Performance Problems
    Create a Tally Function (fnTally)