Yes, that's exactly my reasoning for wanting to hide it.
On Sat, Jan 31, 2015 at 10:32 AM, Stephan Ewen <[email protected]> wrote: > My first Intuition is to not expose the row data type. If we add columnar > executing later, there may never be a Row data type during runtime (cp > paper on hyper runtime engine). > > For these declarative operations, I think it is a big advantage to keep the > underpinnings strictly separate so we can change the execution model. > > Also, I think that explicit switches between the logical and physical > abstraction (switching from class type to logical row type and vice versa) > make things more transparent to the user. As an example: A filter in a > logical query expression may be pushed down, a filter defined as as udf on > a physical type is not pushed down.
