Takeshi Yamamuro created SPARK-19898:
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             Summary: Add from_json in FunctionRegistry
                 Key: SPARK-19898
                 URL: https://issues.apache.org/jira/browse/SPARK-19898
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.1.0
            Reporter: Takeshi Yamamuro
            Priority: Minor


In SPARK-19637, `to_json` has been added in FunctionRegistry. As for 
`from_json`, we do not add yet because how users specify schema as SQL strings 
is not clear (See https://issues.apache.org/jira/browse/SPARK-19637 for related 
discussion).



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