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From "Zheng Shao (JIRA)" <>
Subject [jira] Created: (HIVE-658) Allow conversions from string to complex types
Date Tue, 21 Jul 2009 00:57:14 GMT
Allow conversions from string to complex types

                 Key: HIVE-658
             Project: Hadoop Hive
          Issue Type: New Feature
          Components: Serializers/Deserializers
            Reporter: Zheng Shao

Assuming the format of representing complex types in string, we should be able to convert
strings to complex types.

This can happen in several cases:

1. Serializing a string into a column of a table which is complex-typed.
2. Sending a string into a UDF/GenericUDF which accepts complex types.
3. User explicitly do type casting using syntax like CAST(mystring AS array<int>)

We should assume a default format (maybe JSON, or maybe ^A, ^B, ^C format).

This makes it easier for people to produce complex types from their transform scripts.

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