SQL Access to CouchDB Views
Nicholas Goodman:
[…] enabling SQL Access to CouchDB Views […] single, biggest advantage is: The ability to connect, run of the mill, commodity BI tools to your big data system.
While the video below doesn’t show a PRPT it does show Pentaho doing Ad Hoc, drag and drop reporting on top of CouchDB with LucidDB in the middle, providing the connectivity and FULL SQL access to CouchDB. Once again, the overview:

Being able to bring together both structured and unstructured data—it doesn’t really matter if it is BigData or not—, query it with a language that is familiar to many developers and that had tons of tools available represents the future of polyglot persistence.
Original title and link: SQL Access to CouchDB Views : Easy Reporting | Goodman on BI (©myNoSQL)
via: http://www.nicholasgoodman.com/bt/blog/2011/06/22/sql-access-to-couchdb-views-easy-reporting/