A prototype of Hive UDFs/UDTFs that execute nested SQL queries within rows.
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Exhibit: It's SQL All the Way Down

Exhibit is an evolving collection of various projects for executing SQL against things that look like tiny database tables, including:

  1. Hive arrays of structs
  2. Collections of Avro and Thrift records
  3. Arrays of BSON objects from MongoDB

To get started, you'll want to run:

mvn clean package

To build all of the jars, including the exhibit-*-jar-with-dependencies.jar JAR that is useful for playing with Exhibit and Hive. There is more documentation in the README file for the hive module.