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https://issues.apache.org/jira/browse/HIVE-4844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13724729#comment-13724729
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Jason Dere commented on HIVE-4844:
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Hi Xuefu,
- The patch currently just keeps the params as part of the type string, which
means no metastore changes, but could be brittle in other situations. An
alternative could be additional columns in the COLUMNS metastore table to hold
type qualifiers, similar to what other DB catalogs have, or a separate table of
column_id/param_name/param_value. Do you have any suggestions here?
- For inheritance, do you mean for the primitive/writable types? String is a
final class, so I don't think it's doable for the primitive. I suppose the
writable could derive from Text.
- Sure, a wiki page makes sense. I'll put one up once I get wiki access.
> Add char/varchar data types
> ---------------------------
>
> Key: HIVE-4844
> URL: https://issues.apache.org/jira/browse/HIVE-4844
> Project: Hive
> Issue Type: New Feature
> Components: Types
> Reporter: Jason Dere
> Assignee: Jason Dere
> Attachments: HIVE-4844.1.patch.hack
>
>
> Add new char/varchar data types which have support for more SQL-compliant
> behavior, such as SQL string comparison semantics, max length, etc.
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