I have logged https://issues.apache.org/jira/browse/CALCITE-1382 for this
issue.

Tomorrow i will try to find a better query.

Best regards,
Miguel.

2016-09-22 18:55 GMT+01:00 Julian Hyde <jh...@apache.org>:

> Yes, sure. Please create a runnable test case if you can. It sounds a bit
> improbable as you describe it.
>
> > On Sep 22, 2016, at 8:44 AM, Miguel Oliveira <
> migueloliveira1...@gmail.com> wrote:
> >
> > Hi,
> >
> > I'm using the Jdbc Adapter and the SCOTT schema (emp, dept and salgrade).
> >
> > When i execute the following query (i know that the second join doesn't
> > make sense, but it's only to show the error):
> >
> >> SELECT count(*) FROM (SELECT count(emp.empno) `Count Emp`, dept.dname
> >> `Department Name` FROM Calcite.emp emp JOIN Calcite.dept dept ON
> emp.deptno
> >> = dept.deptno JOIN Calcite.salgrade salgrade ON emp.comm =
> salgrade.hisal
> >> WHERE dept.dname LIKE '%O%' GROUP BY emp.deptno, dept.dname)
> >
> >
> > a CastException is thrown:
> > "org.apache.calcite.adapter.jdbc.JdbcRules$JdbcJoin cannot be cast to
> > org.apache.calcite.adapter.enumerable.EnumerableRel".
> >
> > generates a plan:
> >
> >> [TABLE, #ID {PLAN=EnumerableAggregate(group=[{}], EXPR$0=[COUNT()])
> >>  EnumerableAggregate(group=[{2, 4}])
> >>    JdbcJoin(condition=[=($1, $0)], joinType=[inner])
> >>      JdbcProject(hisal=[$2])
> >>        JdbcTableScan(table=[[Calcite, salgrade]])
> >>      JdbcJoin(condition=[=($1, $2)], joinType=[inner])
> >>        JdbcProject(comm=[$6], deptno=[$7])
> >>          JdbcTableScan(table=[[Calcite, emp]])
> >>        JdbcProject(deptno=[$0], dname=[$1])
> >>          JdbcFilter(condition=[LIKE($1, '%O%')])
> >>            JdbcTableScan(table=[[Calcite, dept]])
> >> , }]
> >
> >
> > Can i create an issue for this?
> >
> > Best regards,
> > Miguel.
>
>

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