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  • May 16, 2008 at 12:13 pm

    #816666

    Being familiar with both the nested set model [specifically Celko's push stack] and the CTE model, they each have their advantages and are relatively easy to set up. I recommend the adjacency list for OLTP systems with a sproc to generate the nested set as hierarchical data is needed (it's a cheap operation).

    Another option that I feel should at least be mentioned is denormalizing your data, although it limits the number of levels you can have in your hierarchy. Denormalization, however, would be the fastest hybrid OLTP/OLAP solution (nested sets IMO are functional OLAP).

    - James

  • August 8, 2010 at 8:24 pm

    #1203973

    James Raddock (5/16/2008)

    ...with a sproc to generate the nested set as hierarchical data is needed (it's a cheap operation).

    I know this is an old thread, but can you post the code for that sproc? Thanks.

    --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)

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