• sagesmith (6/18/2013)


    Please post the times each approach takes, this is the only basis for a conclusion. As others have already mentioned, in many scenarios the cursor far outperforms the recursive cte.

    Over to you then. Sample data setup is a page or two back. I've compared iTally vs rCTE here:

    http://www.sqlservercentral.com/Forums/FindPost1464526.aspx

    Feel free to write your fastest cursor-based solution ๐Ÿ˜‰

    โ€œWrite the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.โ€ - Gail Shaw

    For fast, accurate and documented assistance in answering your questions, please read this article.
    Understanding and using APPLY, (I) and (II) Paul White
    Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden