[jira] [Created] (DRILL-5880) java.sql.SQLException: UNSUPPORTED_OPERATION ERROR: This query cannot be planned possibly due to either a cartesian join or an inequality join

["Prasad Nagaraj Subramanya (JIRA)" <ji...@apache.org>]

Prasad Nagaraj Subramanya created DRILL-5880:
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             Summary: java.sql.SQLException: UNSUPPORTED_OPERATION ERROR: This query cannot be planned possibly due to either a cartesian join or an inequality join
                 Key: DRILL-5880
                 URL: https://issues.apache.org/jira/browse/DRILL-5880
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Relational Operators
    Affects Versions: 1.11.0
            Reporter: Prasad Nagaraj Subramanya


Consider the below query
{code}
select region.sales_region as c0, region_1.sales_region as c1, sum(sales_fact_1997.unit_sales) as m0 from region as region, store as store, sales_fact_1997 as sales_fact_1997, region as region_1, customer as customer where sales_fact_1997.store_id = store.store_id and store.region_id = region.region_id and region.sales_region = 'South West' and sales_fact_1997.customer_id = customer.customer_id and customer.customer_region_id = region_1.region_id and region_1.sales_region = 'South West' group by region.sales_region, region_1.sales_region
{code}

The query fails with the following error-
{code}
(org.apache.drill.exec.work.foreman.UnsupportedRelOperatorException) This query cannot be planned possibly due to either a cartesian join or an inequality join
    org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToPrel():437
    org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan():169
    org.apache.drill.exec.planner.sql.DrillSqlWorker.getQueryPlan():131
    org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan():79
    org.apache.drill.exec.work.foreman.Foreman.runSQL():991
    org.apache.drill.exec.work.foreman.Foreman.run():276
    java.util.concurrent.ThreadPoolExecutor.runWorker():1145
    java.util.concurrent.ThreadPoolExecutor$Worker.run():615
    java.lang.Thread.run():744
{code}

This is a regression. It worked with drill 1.10.0

Having a single alias of the table region in the above query works fine.



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