Ruben Q L created CALCITE-3484:
----------------------------------
Summary: SqlToRelConverter: ClassCastException when processing a
query with ANY and UNNEST
Key: CALCITE-3484
URL: https://issues.apache.org/jira/browse/CALCITE-3484
Project: Calcite
Issue Type: Bug
Affects Versions: 1.21.0
Reporter: Ruben Q L
The problem can be reproduced by adding the following test to
SqlToRelConverterTest.java:
{code}
@Test public void testEqAnyUnnest() {
final String sql = "select d.deptno from dept_nested d WHERE 'john' = ANY
(SELECT e.ename from UNNEST(d.employees) e)";
sql(sql).ok();
}
{code}
Which throws the following exception:
{code}
java.lang.ClassCastException: org.apache.calcite.rel.logical.LogicalCorrelate
cannot be cast to org.apache.calcite.rel.core.Join
at
org.apache.calcite.sql2rel.SqlToRelConverter.translateIn(SqlToRelConverter.java:1285)
at
org.apache.calcite.sql2rel.SqlToRelConverter.substituteSubQuery(SqlToRelConverter.java:1157)
at
org.apache.calcite.sql2rel.SqlToRelConverter.replaceSubQueries(SqlToRelConverter.java:1013)
at
org.apache.calcite.sql2rel.SqlToRelConverter.convertWhere(SqlToRelConverter.java:979)
at
org.apache.calcite.sql2rel.SqlToRelConverter.convertSelectImpl(SqlToRelConverter.java:648)
at
org.apache.calcite.sql2rel.SqlToRelConverter.convertSelect(SqlToRelConverter.java:626)
at
org.apache.calcite.sql2rel.SqlToRelConverter.convertQueryRecursive(SqlToRelConverter.java:3180)
at
org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:562)
at
org.apache.calcite.test.SqlToRelTestBase$TesterImpl.convertSqlToRel(SqlToRelTestBase.java:626)
at
org.apache.calcite.test.SqlToRelTestBase$TesterImpl.assertConvertsTo(SqlToRelTestBase.java:745)
at
org.apache.calcite.test.SqlToRelConverterTest$Sql.convertsTo(SqlToRelConverterTest.java:3664)
at
org.apache.calcite.test.SqlToRelConverterTest$Sql.ok(SqlToRelConverterTest.java:3656)
at
org.apache.calcite.test.SqlToRelConverterTest.testEqAnyUnnest(SqlToRelConverterTest.java:1266)
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)
{code}
Note that the following "similar" queries are correctly converted:
{code}
@Test public void testUnnestEq() {
final String sql = "select d.deptno from dept_nested d, UNNEST(d.employees)
e WHERE e.ename = 'john'";
sql(sql).ok();
}
@Test public void testInUnnest() {
final String sql = "select d.deptno from dept_nested d WHERE 'john' IN
(SELECT e.ename from UNNEST(d.employees) e)";
sql(sql).ok();
}
@Test public void testExistsUnnest() {
final String sql = "select d.deptno from dept_nested d WHERE EXISTS (SELECT
1 from UNNEST(d.employees) e WHERE e.ename = 'john')";
sql(sql).ok();
}
{code}
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