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  1. Apache Drill
  2. DRILL-5880

java.sql.SQLException: UNSUPPORTED_OPERATION ERROR: This query cannot be planned possibly due to either a cartesian join or an inequality join

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      Description

      Consider the below query

      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
      

      The query fails with the following error-

      (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
      

      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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            • Assignee:
              vvysotskyi Volodymyr Vysotskyi
              Reporter:
              prasadns14 Prasad Nagaraj Subramanya
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              • Created:
                Updated:
                Resolved: