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From Alessandro Solimando <alessandro.solima...@gmail.com>
Subject subquery leading to a "java.lang.ClassCastException: RexSubQuery cannot be cast to RexLocalRef"
Date Wed, 14 Feb 2018 23:41:57 GMT
Hello,
while executing this query Calcite tries to cast the subquery (RexSubQuery)
to a local reference (RexLocalRef), resulting in a ClassCastException.

Here is the query:

>
> *select **
> *from (values (1, 'a'), (2, 'b'), (3, 'b'), (4, 'c'), (2, 'c')) as t(x, y)*
> *where exists (*
> *  select **
> *  from (values (1, 'a'), (2, 'b')) as v(w, z)*
> *  where w < x**)*


But the same happens with other (similar) queries:

> *select x*

*from (values (1, 'a'), (2, 'b')) as t(x, y)*

*where x <= all (*

*  select x*

*  from (values (1, 'a'), (2, 'b'), (1, 'b'), (2, 'c'), (2, 'c')) as t(x,
> y)*

*)*


Can you confirm the issue?
If so I will open a ticket, so I can mark as ignored the related tests with
a reference to such ticket (until the problem gets fixed).

If needed, they can inspected here:
https://github.com/asolimando/calcite/tree/SPARK-TESTS

The tests reproducing the issue are:
-) testFilterExists
-) testFilterNotExists
-) testSubqueryAny
-) testSubqueryAll

Below the full stack trace (for the first query mentioned above):

java.lang.RuntimeException: With materializationsEnabled=false, limit=0
> at
> org.apache.calcite.test.CalciteAssert.assertQuery(CalciteAssert.java:600)
> at
> org.apache.calcite.test.CalciteAssert$AssertQuery.returns(CalciteAssert.java:1346)
> at
> org.apache.calcite.test.CalciteAssert$AssertQuery.returns(CalciteAssert.java:1329)
> at
> org.apache.calcite.test.CalciteAssert$AssertQuery.returnsUnordered(CalciteAssert.java:1357)
> at
> org.apache.calcite.test.SparkAdapterTest.commonTester(SparkAdapterTest.java:93)
> at
> org.apache.calcite.test.SparkAdapterTest.testFilterExists(SparkAdapterTest.java:720)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
> at
> com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
> at
> com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
> at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
> Caused by: java.sql.SQLException: Error while executing SQL "select *
> from (values (1, 'a'), (2, 'b'), (3, 'b'), (4, 'c'), (2, 'c')) as t(x, y)
> where exists (
>   select *
>   from (values (1, 'a'), (2, 'b')) as v(w, z)
>   where w < x
> )": org.apache.calcite.rex.RexSubQuery cannot be cast to
> org.apache.calcite.rex.RexLocalRef
> at org.apache.calcite.avatica.Helper.createException(Helper.java:56)
> at org.apache.calcite.avatica.Helper.createException(Helper.java:41)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:218)
> at
> org.apache.calcite.test.CalciteAssert.assertQuery(CalciteAssert.java:568)
> ... 27 more
> Caused by: java.lang.ClassCastException:
> org.apache.calcite.rex.RexSubQuery cannot be cast to
> org.apache.calcite.rex.RexLocalRef
> at
> org.apache.calcite.rex.RexProgramBuilder.registerInput(RexProgramBuilder.java:298)
> at
> org.apache.calcite.rex.RexProgramBuilder.addCondition(RexProgramBuilder.java:272)
> at
> org.apache.calcite.adapter.enumerable.EnumerableFilterToCalcRule.onMatch(EnumerableFilterToCalcRule.java:50)
> at
> org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:317)
> at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:555)
> at org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:415)
> at
> org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:252)
> at
> org.apache.calcite.plan.hep.HepInstruction$RuleInstance.execute(HepInstruction.java:127)
> at
> org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:211)
> at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:198)
> at org.apache.calcite.tools.Programs$2.run(Programs.java:213)
> at org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:387)
> at org.apache.calcite.prepare.Prepare.optimize(Prepare.java:188)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:319)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:230)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:781)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:640)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:610)
> at
> org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:221)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:603)
> at
> org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:638)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:149)
> ... 29 more
> java.lang.RuntimeException: exception while executing [select *
> from (values (1, 'a'), (2, 'b'), (3, 'b'), (4, 'c'), (2, 'c')) as t(x, y)
> where exists (
>   select *
>   from (values (1, 'a'), (2, 'b')) as v(w, z)
>   where w < x
> )]
> at
> org.apache.calcite.test.CalciteAssert$AssertQuery.returns(CalciteAssert.java:1351)
> at
> org.apache.calcite.test.CalciteAssert$AssertQuery.returns(CalciteAssert.java:1329)
> at
> org.apache.calcite.test.CalciteAssert$AssertQuery.returnsUnordered(CalciteAssert.java:1357)
> at
> org.apache.calcite.test.SparkAdapterTest.commonTester(SparkAdapterTest.java:93)
> at
> org.apache.calcite.test.SparkAdapterTest.testFilterExists(SparkAdapterTest.java:720)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
> at
> com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
> at
> com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
> at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)


Best regards,
Alessandro

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