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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-938) dynamic partitions by altering table
Date Tue, 17 Nov 2009 15:41:39 GMT

    [ https://issues.apache.org/jira/browse/HIVE-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12778941#action_12778941
] 

Ning Zhang commented on HIVE-938:
---------------------------------

@prasad, currently we don't allow changing partition keys in DDL. If we want to support that,
we need a rebuild/repartitioning, eventually touching the data as well as the metadata. 

> dynamic partitions by altering table
> ------------------------------------
>
>                 Key: HIVE-938
>                 URL: https://issues.apache.org/jira/browse/HIVE-938
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Namit Jain
>
> { create table T(a int, b string, ds string); insert overwrite table T select * from
S where ds >= '2009-11-1' and ds <= '2009-11-16'; alter table T partitioned by (ds);
} 
> should make T partitioned by the unique values of ds

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