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Re:Run SQL on JSON files without any data loads by rjurney on Friday May 31, 2013 @12:58PM (#5799745)
Apache Pig and Hive are other systems that can do this, minus the one file limitation.
Re:Run SQL on JSON files without any data loads by femami on Friday May 31, 2013 @03:52PM (#5800975)
json_fdw to Citus DB or any other PostgreSQL based distributed database, is like json serde to Hive.

So, I think you should probably compare the json_fdw to json serde, and Citus DB to Hive.