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From "Jason Dere (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-7971) Support alter table change/replace/add columns for existing partitions
Date Wed, 03 Sep 2014 23:54:51 GMT

     [ https://issues.apache.org/jira/browse/HIVE-7971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Dere updated HIVE-7971:
-----------------------------
    Attachment: HIVE-7971.1.patch

> Support alter table change/replace/add columns for existing partitions
> ----------------------------------------------------------------------
>
>                 Key: HIVE-7971
>                 URL: https://issues.apache.org/jira/browse/HIVE-7971
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>         Attachments: HIVE-7971.1.patch
>
>
> ALTER TABLE CHANGE COLUMN is allowed for tables, but not for partitions. Same for add/replace
columns.
> Allowing this for partitions can be useful in some cases. For example, one user has tables
with Hive 0.12 Decimal columns, which do not specify precision/scale. To be able to properly
read the decimal values from the existing partitions, the column types in the partitions need
to be changed to decimal types with precision/scale.



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