Expose whether can use the regular sort or lexsort for given data type

[rluvaton]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Yes, I want to use the optimize sort when I can, however there is no way to know if the current sort kernel support the input data type or not

Describe the solution you'd like
expose whether I can use the sort or lex sort

Describe alternatives you've considered
look at the implementation and duplicate the logic to check, but if there are more types that are supported, I won't know