• I have to admit, when I saw

    Wally Wallington...(Thanks Curtis Curtington)

    it crossed my mind that this was an early April Fools prank, but no, not at all. Very impressive indeed.

    “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