CData for Couchbase supports query passthrough. TDV does not take advantage of this feature. As a result, we have to pull millions of records from the database instead of pulling back an aggregated summary table. Please add this feature to TDV CData Couchbase driver.
Reference to GA release of CData for Couchbase Query Passthrough is available:
http://cdn.cdata.com/help/CKE/dcmd/RSBCouchbase_p_QueryPassthrough.htm
Reference to TDV release of CData for Couchbase. Query Passthrough is missing:
http://cdn.cdata.com/help/CKE/cis/Connection.htm