Victoria Markman created DRILL-2441:
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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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