Select Distinct in CAML query for list

We use SSRS and want to use SP 2013 lists as data sources.

In SP2010 one of the major problems which we faced was that when you create a dataset to pull out a parameter value from a list. you cannot do a DISTINCT on the list.

I was told that this limitation exists because CAML itself does not have a concept of DISTINCT

I wonder if this is something which was resolved in SP2013

val it: unit=()