Home Forums SQL Server 2005 T-SQL (SS2K5) Rand() function error RE: Rand() function error

  • March 1, 2009 at 6:57 pm

    #951639

    There is no need for the RBAR of a function to generate random integer values. The only reason you think so is because you found out that RAND returns the same number throughout a given single select. The following code produces 500 random integers from 10 to 100 across many rows in a single return as an example...

    DECLARE @MinValue INT , @MaxValue INT , @Quantity INT

    SELECT @MinValue = 10, @MaxValue = 100, @Quantity = 500

    SELECT TOP (@Quantity)

    ABS(CHECKSUM(NEWID()))%(@MaxValue-@MinValue+1)+@MinValue

    FROM Master.sys.SysColumns sc1

    --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.

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