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Posted to issues@spark.apache.org by "Maxim Gekk (JIRA)" <ji...@apache.org> on 2018/06/13 08:06:00 UTC

[jira] [Created] (SPARK-24543) Support any DataType as DDL string for from_json's schema

Maxim Gekk created SPARK-24543:
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             Summary: Support any DataType as DDL string for from_json's schema
                 Key: SPARK-24543
                 URL: https://issues.apache.org/jira/browse/SPARK-24543
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.3.1
            Reporter: Maxim Gekk


Currently, schema for from_json can be specified as DataType or a string in the following formats:
* in SQL, as sequence of fields like _INT a, STRING b
* in Scala, Python and etc, in JSON format or as in SQL 

The ticket aims to support arbitrary DataType as DDL string for from_json. For example:
{code:sql}
select from_json('{"a":1, "b":2}', 'map<string, int>')
{code}



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