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From "Jason Altekruse (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2011) View on top of a aggregation over a subquery fails to plan
Date Thu, 15 Jan 2015 00:16:35 GMT
Jason Altekruse created DRILL-2011:
--------------------------------------

             Summary: View on top of a aggregation over a subquery fails to plan
                 Key: DRILL-2011
                 URL: https://issues.apache.org/jira/browse/DRILL-2011
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Jason Altekruse


This last query in this test will currently fail to plan, the exception is - SEVERE: org.eigenbase.util.EigenbaseContextException:
At line 0, column 0: Table 'EXPR$0' not found

The anonymous sub-query in the view is not able to be resolved inside of calcite, simply giving
an alias to the subquery fixes the planning issue. The query runs fine if not defined in a
view.

<code>
  @Test
  public void testAggOnSubquery() throws Exception {
    test("use dfs.tmp");
    test("create or replace view testAggOnSubquery_view as select n_nationkey, sum(n_regionkey)
from (select n_nationkey,n_regionkey from cp.`tpch/nation.parquet`) GROUP BY n_nationkey");
    test("select n_nationkey from testAggOnSubquery_view");
  }

</code>

This runs fine
<code>
select n_nationkey from (select n_nationkey, sum(n_regionkey) from (select n_nationkey,n_regionkey
from cp.`tpch/nation.parquet`) GROUP BY n_nationkey)
</code>



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