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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-675) add database/scheme support Hive QL
Date Wed, 23 Sep 2009 01:03:16 GMT

     [ https://issues.apache.org/jira/browse/HIVE-675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

He Yongqiang updated HIVE-675:
------------------------------

    Attachment: hive-675-2009-9-23.patch

Talked with Namit offline. The "create database" with an already existing directory as the
db location will throw an exception, becaue databases will have tables as their sub-objects.
the "drop database" command will also drop its corresponding data directory (as compatible
with mysql and oracle's semantic).

And need a test for the command "create database" with location, Namit will help writing the
test code. Thanks Namit!

> add database/scheme support Hive QL
> -----------------------------------
>
>                 Key: HIVE-675
>                 URL: https://issues.apache.org/jira/browse/HIVE-675
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Prasad Chakka
>            Assignee: He Yongqiang
>         Attachments: hive-675-2009-9-16.patch, hive-675-2009-9-19.patch, hive-675-2009-9-21.patch,
hive-675-2009-9-23.patch, hive-675-2009-9-7.patch, hive-675-2009-9-8.patch
>
>
> Currently all Hive tables reside in single namespace (default). Hive should support multiple
namespaces (databases or schemas) such that users can create tables in their specific namespaces.
These name spaces can have different warehouse directories (with a default naming scheme)
and possibly different properties.
> There is already some support for this in metastore but Hive query parser should have
this feature as well.

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