Re: In a select clause, what can not be resolved by hashing?

The reasoning I was using to _guess_ that the answer was "HAVING" had to do with the fact that there are LAVA operators for DISTINCT, GROUP BY, and ORDER BY that involve hashing, but HAVING would fall under the RESTRICT operator, a different and unique operator in the LAVA engine.  I'm willing to learn something new though, and I can't argue against the reasoning that Bret and Rob give for choosing "ORDER BY" as the answer either