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From "Aman Sinha (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-1937) Disable internal function SINGLE_VALUE()
Date Wed, 28 Jan 2015 02:43:34 GMT

     [ https://issues.apache.org/jira/browse/DRILL-1937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aman Sinha updated DRILL-1937:
------------------------------
    Assignee: Sean Hsuan-Yi Chu  (was: Aman Sinha)

> Disable internal function SINGLE_VALUE() 
> -----------------------------------------
>
>                 Key: DRILL-1937
>                 URL: https://issues.apache.org/jira/browse/DRILL-1937
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: SQL Parser
>    Affects Versions: 0.8.0
>            Reporter: Victoria Markman
>            Assignee: Sean Hsuan-Yi Chu
>
> {code}
> #Fri Jan 02 21:20:47 EST 2015
> git.commit.id.abbrev=b491cdb
> {code}
> It is dangerous to have an internal function be exposed to users.
> What if one day user decided to write a UDF with the same signature ?
> {code}
> 0: jdbc:drill:schema=dfs> select SINGLE_VALUE(1) from `t.json`;
> +--+
> |  |
> +--+
> +--+
> No rows selected (0.111 seconds)
> {code}



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