Create an External Data Querying language, based on SQL or Cargo (#cargo_query) query language, and able to combine several heterogenous external data sources, UNION'ed or JOIN'ed together.
The following libraries may help to parse the queries:
Create an External Data Querying language, based on SQL or Cargo (#cargo_query) query language, and able to combine several heterogenous external data sources, UNION'ed or JOIN'ed together.
The following libraries may help to parse the queries: