[jira] [Created] (CALCITE-4742) AssertionError in SubQueryRemoveRule.rewriteSome while rewriting ANY subquery

["Ivan Daschinsky (Jira)" <ji...@apache.org>]

Ivan Daschinsky created CALCITE-4742:
----------------------------------------

             Summary: AssertionError in SubQueryRemoveRule.rewriteSome while rewriting ANY subquery
                 Key: CALCITE-4742
                 URL: https://issues.apache.org/jira/browse/CALCITE-4742
             Project: Calcite
          Issue Type: Bug
            Reporter: Ivan Daschinsky


When executing
{code}
select * from "scott".emp where empno <> any (select 10);
{code}
with assertions, got assertion error 
{code}
---
> java.lang.AssertionError
> 	at org.apache.calcite.rel.rules.SubQueryRemoveRule.rewriteSome(SubQueryRemoveRule.java:170)
> 	at org.apache.calcite.rel.rules.SubQueryRemoveRule.apply(SubQueryRemoveRule.java:92)
> 	at org.apache.calcite.rel.rules.SubQueryRemoveRule.matchFilter(SubQueryRemoveRule.java:637)
> 	at org.apache.calcite.rel.rules.SubQueryRemoveRule.access$100(SubQueryRemoveRule.java:71)
> 	at org.apache.calcite.rel.rules.SubQueryRemoveRule$Config.lambda$static$3(SubQueryRemoveRule.java:701)
> 	at org.apache.calcite.rel.rules.SubQueryRemoveRule.onMatch(SubQueryRemoveRule.java:82)
> 	at org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:341)
> 	at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:565)
> 	at org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:428)
> 	at org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:282)
> 	at org.apache.calcite.plan.hep.HepInstruction$RuleCollection.execute(HepInstruction.java:77)
> 	at org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:208)
> 	at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:195)
> 	at org.apache.calcite.tools.Programs.lambda$of$0(Programs.java:176)
> 	at org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:335)
> 	at org.apache.calcite.prepare.Prepare.optimize(Prepare.java:172)
> 	at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:306)
> 	at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:215)
> 	at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:647)
> 	at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:513)
> 	at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:483)
> 	at org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:249)
> 	at org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:623)
{code}

This query cannot be rewritten as IN query, so it goes to  `SubQueryRemoveRule.rewriteSome`. Current logic in this method doesn't work on this case and produce wrong plan. 

This query should be rewritten to something like this:
{code}
select distinct(e.*)  from "scott".emp as e left join
    (select 10 as deptno) as q
on e.deptno <> q.deptno;
{code}



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