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https://issues.apache.org/jira/browse/HIVE-365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846473#action_12846473
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Arvind Prabhakar commented on HIVE-365:
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Zheng - can you please give an example DDL that needs to be supported? As of
0.5.0 release of hive the following are considered valid DDL:
{quote}
{{CREATE TABLE nested_array (array_of_arrays ARRAY < ARRAY <INT>>)}}
{{CREATE TABLE nested_map (map_of_maps MAP < STRING, MAP < INT, MAP < INT,
ARRAY <INT>>>>)}}
{quote}
> Create Table to support multiple levels of delimiters
> -----------------------------------------------------
>
> Key: HIVE-365
> URL: https://issues.apache.org/jira/browse/HIVE-365
> Project: Hadoop Hive
> Issue Type: New Feature
> Reporter: Zheng Shao
>
> From HIVE-337, the SerDe layer now supports multiple-levels of delimiters,
> for the purpose of supporting nested map/array/struct.
> Array(the same as List) and struct consume a single level of separator, and
> Map consumes 2 levels.
> DDL (Create Table) needs to allow users to specify multiple levels of
> delimiters in order to take the advantage of this new feature.
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