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[jira] [Created] (ARROW-3767) [C++] Add cast for Null to any type

Uwe L. Korn created ARROW-3767:

             Summary: [C++] Add cast for Null to any type
                 Key: ARROW-3767
                 URL: https://issues.apache.org/jira/browse/ARROW-3767
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Uwe L. Korn
             Fix For: 0.13.0

Casting a column from NullType to any other type is possible as the resulting array will also be all-null but simply with a different type annotation.

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