select vs. exec

[fjaifi]

"select avg f1 by f2 from t" maps to "exec f1:avg f1 by f2:f2 from t" Interestingly, they match in terms of their parse trees and execution output

[patmok]

since exec is the general case it currently returns exec when it can't determine what expression generated the input parse tree, unfortunately i don't think there is a way around this?

ps: i just updated it a bit to handle : better, check it out!