RE: Join yeilds different results if used with CTE or a real table

SSC Guru

Points: 1003863

March 21, 2013 at 6:47 pm

You're joining to an indeterminent value and at execution plan time, it can't determine what to join on and so it ignores the predicate. Look at the execution plan for the "Nested Loops (Inner Join)" symbol. Notice the little yellow alert symbol on it. If you right click on the symbol and bring up "Properties", you'll see a warning message that says "No Join Predicate".

{Edit} Heh... beat out by 2 minutes. 🙂

--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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