Apache Drill is a low-latency distributed query engine for large-scale datasets, including structured and semi-structured/nested data.
You can connect to Apache Drill through the following interfaces:
ray2501: I write a Tcl extension DrillREST and play Apache Drill (embedded mode) on my Ubuntu 14.04 VM.
Since Apache Drill have ODBC interface, I think also could use TDBC-ODBC to connect.