• Dwain C has a nice article covering usage, I've put a link in an earlier post in this thread.

    Blimey. I've learned so much from your website over the years. Nice - and a privilege - to see the tables turned.

    “Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - 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