[jira] Commented: (HIVE-365) Create Table to support multiple levels of delimiters

["Arvind Prabhakar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846473#action_12846473 ] 

Arvind Prabhakar commented on HIVE-365:
---------------------------------------

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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