Home Forums SQL Server 2005 T-SQL (SS2K5) Select 10 contacts in a company randomly RE: Select 10 contacts in a company randomly

  • November 29, 2009 at 8:49 pm

    #1085219

    This should get you started...

    WITH

    cteRandomlyNumber AS

    (

    SELECT PersonID,

    CoID,

    RowNum = ROW_NUMBER() OVER (PARTITION BY CoID ORDER BY NEWID())

    FROM dbo.People

    )

    SELECT PersonID, CoID

    FROM cteRandomlyNumber

    WHERE RowNum <= 10

    Takes about 12 seconds on a million employees across 676 different companies.

    --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)