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From "Victoria Markman (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2441) Throw unsupported error message in case of inequality join
Date Thu, 12 Mar 2015 18:05:40 GMT
Victoria Markman created DRILL-2441:
---------------------------------------

             Summary: 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: Sean Hsuan-Yi Chu


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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