Please clarify whether the operational DAX+Qserv system should be queried using the qserv_* family of functions (UDFs) or the corresponding scisql_* functions.

Example: qserv_areaspec_circle versus scisql_s2PtInCircle.

From documentation I can see, the scisql_* functions may be a (substantial) superset of the qserv_* functions.

I understand that the answer to this question may be different for the 2016-17 PDAC versus the planned final system.