Home Forums Article Discussions Article Discussions by Author Discuss Content Posted by Jeff Moden REPLACE Multiple Spaces with One RE: REPLACE Multiple Spaces with One

  • March 26, 2015 at 8:32 pm

    #1786733

    I believe that the reasons for that are many...

    1. It's a scalar UDF.

    2. It does calculations instead of using constants.

    3. It doesn't take advantage of nested replaces.

    4. It has a relatively very expensive ORDER BY.

    The nested replaces could actually be made into an Inline Table Valued Function as a kind of "iSF" or Inline Scalar Valued Function. Please see the following for more information on that subject.

    http://www.sqlservercentral.com/articles/T-SQL/91724/

    --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)