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

  • March 4, 2013 at 7:40 pm

    #1593256

    Arjun Sivadasan (3/3/2013)

    Jeff Moden (3/3/2013)<snip/> For example, 40,000 INDEX SEEKs behind the scenes can be quite a bit slower than a single scan at the leaf level.

    Jeff, in this case, won't optimizer choose to scan rather than to seek? Will optimizer seek blindly because the index is covering? Or does it depend?

    Like Craig said, it depends but you do have to look.

    --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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