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From "Sean Hsuan-Yi Chu (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (DRILL-2441) Throw unsupported error message in case of inequality join
Date Tue, 17 Mar 2015 18:56:39 GMT

     [ https://issues.apache.org/jira/browse/DRILL-2441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Hsuan-Yi Chu resolved DRILL-2441.
--------------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: 0.9.0)
                   0.8.0

> Throw unsupported error message in case of inequality join
> ----------------------------------------------------------
>
>                 Key: DRILL-2441
>                 URL: https://issues.apache.org/jira/browse/DRILL-2441
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>            Reporter: Victoria Markman
>            Assignee: Aman Sinha
>             Fix For: 0.8.0
>
>         Attachments: DRILL-2441.1.patch
>
>
> Since we don't support inequality join, the whole class of queries will throw huge page
long "Can't plan exception"
> This is a request to throw a nice error message that we throw in case of cartesian join
in these cases as well.
> {code} 
> select * from t1 left outer join t2  on (t1.a1 = t2.a2 and t1.b2 <> t2.b2);
> select * from t1 right outer join t2 on (t1.a1 = t2.a2 and t1.b2 <> t2.b2);
> {code}
> Example of an exception:
> {code}
> 0: jdbc:drill:schema=dfs> select * from t1 inner join t2 on(t1.b1 <> t2.b2);
> Query failed: UnsupportedRelOperatorException: This query cannot be planned possibly
due to either a cartesian join or an inequality join
> Error: exception while executing query: Failure while executing query. (state=,code=0)
> {code}



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