Group By shouldn't be implicit in a query expressed as SQL

[shrjain]

Example:
Y = select asample, bsample, 2*sum(minv) as mnv from X

The query above does an implicit Group By asample, bsample.
For queries expressed in MyriaL it might make sense to do so, but for queries expressed in SQL.

Moreover, the query:
Y = select asample, bsample, 2*sum(minv) as mnv from group by asample, bsample
throws an exception.