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What are the functions of Spark SQL in Spark?

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Spark SQL supports HiveQueryLanguage and SQL without syntax changes on the Sparkcore engine. It is a new model in Spark which integrates functional programming API of Spark with relational processing. It can support querying data either via Hive Query Language or via SQL.

The Spark SQL has the capability of querying the data by using the Spark program and SQL statements. It can also provide rich interactions between regular Java/Python/Scala code and SQL. Data loading from various structured sources can be possible through Spark SQL.

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