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From "Vaibhav Aggarwal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-2020) Create a separate namespace for Hive variables
Date Mon, 08 Aug 2011 22:46:28 GMT

     [ https://issues.apache.org/jira/browse/HIVE-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vaibhav Aggarwal updated HIVE-2020:
-----------------------------------

    Attachment: HIVE-2020-2.patch

> Create a separate namespace for Hive variables
> ----------------------------------------------
>
>                 Key: HIVE-2020
>                 URL: https://issues.apache.org/jira/browse/HIVE-2020
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Carl Steinbach
>            Assignee: Vaibhav Aggarwal
>         Attachments: HIVE-2020-2.patch, HIVE-2020.patch
>
>
> Support for variable substitution was added in HIVE-1096. However, variable substitution
was implemented by reusing the HiveConf namespace, so there is no separation between Hive
configuration properties and Hive variables.
> This ticket encompasses the following enhancements:
> * Create a separate namespace for managing Hive variables.
> * Add support for setting variables on the command line via '-hivevar x=y'
> * Add support for setting variables through the CLI via 'var x=y'
> * Add support for referencing variables in statements using either '${hivevar:var_name}'
or '${var_name}'
> * Provide a means for differentiating between hiveconf, hivevar, system, and environment
properties in the output of 'set -v'

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