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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-16050) Regression: Union of null with non-null
Date Mon, 27 Feb 2017 20:06:45 GMT

     [ https://issues.apache.org/jira/browse/HIVE-16050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gopal V updated HIVE-16050:
---------------------------
    Status: Patch Available  (was: Open)

> Regression: Union of null with non-null 
> ----------------------------------------
>
>                 Key: HIVE-16050
>                 URL: https://issues.apache.org/jira/browse/HIVE-16050
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Planning
>    Affects Versions: 2.2.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>             Fix For: 2.2.0
>
>         Attachments: HIVE-16050.1.patch
>
>
> {code}
> hive> select null as c1 union select 1 as c2;
>     FAILED: SemanticException Schema of both sides of union should match: Column c1 is
of type void on first table and type int on second table. Cannot tell the position of null
AST.
> {code}
> This looks related to HIVE-14251 which removed certain cases from the UNION type coercion
operations.



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