Still keeping an open mind about it all (you have to, in this business), does anyone know of a publically available "Before'n'After" cost analysis of "On Premise" vs "Cloud" that...

By the same token, there is a type of duplicate index that can provide huge performance increases.  They usually (but not always) are considered to be
"Covering Indexes".  You...

Insufficient info given on the explanation of the answer.  You need to tell the people what those 7 bytes are.

By the way... for those interested in batch runs, the inline code I wrote avoids the Cartesian Product altogether and only reads what necessary from the Calendar table.