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https://issues.apache.org/jira/browse/HIVE-62?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12647498#action_12647498
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Ashish Thusoo commented on HIVE-62:
-----------------------------------
yes that is a possibility. One problem from a usability angle though is that
even if I know the path to the field I would have to go though multiple
describe types to get to the member that I am interested in finding the type
of. e.g.
{int a;
lObj b;
}
Obj {
int c;
}
In order to find the type for c I would have to
describe T;
which would give me
int a
Obj b;
then I would have to
describe type Obj;
which would give me
int c;
instead of just saying
describe T.b
Having a TYPE keyword though is a good idea, though Oracle and other OORDBMS do
not make this explict.
Check out the Oracle type syntax at
http://download.oracle.com/docs/cd/B19306_01/server.102/b14357/ch12019.htm
though Oracle itself does not support the dotted notation to find the type of
an element represented by an xpath expression as far as I know.
> Add ability to describe nested types
> ------------------------------------
>
> Key: HIVE-62
> URL: https://issues.apache.org/jira/browse/HIVE-62
> Project: Hadoop Hive
> Issue Type: New Feature
> Reporter: Ashish Thusoo
> Assignee: Ashish Thusoo
>
> Add ability to describe nested types.
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