Once the database can start receiving and returning json, then you can treat it as a webservice and not have the client involved in SQL. I think this is huge.
"With PostgreSQL 9.2, query results can be returned as JSON data types."
It also supports the PL/V8 stored procedure format, which is Javascript http://code.google.com/p/plv8js/wiki/PLV8
It's very, very close.
spc_handle_request(req_headers, req_body, http_method, ...)
insert into table (a, b, c) values (to_json(req_body).a, to_json(req_body).b, to_json(req_body).c); to_json(select * from emp);