Home Forums SQL Server 2008 T-SQL (SS2K8) Guidance on table valued types. RE: Guidance on table valued types.

  • March 3, 2013 at 12:06 pm

    #1592787

    mayur birari (2/28/2013)

    From the plan, it can be seen that the new index is used. It also saves an extra Sort operation on the tvp.

    HOW is the index ACTUALLY being used? Just because it may be an INDEX SEEK doesn't necessarily mean that it will be more effective. You have to look at the properties of the seek. How many times is the seek actually occuring? For example, 40,000 INDEX SEEKs behind the scenes can be quite a bit slower than a single scan at the leaf level.

    --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)