[jira] [Created] (CALCITE-5590) NullPointerException when converting 'in' expression that is used inside select list and group by

[Jiajun Xie (Jira)]

Jiajun Xie created CALCITE-5590:
-----------------------------------

             Summary: NullPointerException when converting  'in' expression 
that is used inside select list and group by
                 Key: CALCITE-5590
                 URL: https://issues.apache.org/jira/browse/CALCITE-5590
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.33.0
            Reporter: Jiajun Xie


In CALCITE-5209, we changed sub-query handle way.

It can solve some problems, but it also introduces some new problems.

Here is a simple case to reproduce, it can work before 1.33.0
{code:java}
@Test void testGroupByCaseWhen() {
final String sql = "select case when deptno in (1) then 1 end as col\n"
+ "from emp\n"
+ "group by deptno, case when deptno in (1) then 1 else 0 end";
sql(sql).ok();
} {code}
{code:java}
while converting CASE WHEN `EMP`.`DEPTNO` IN (1) THEN 1 ELSE NULL END
java.lang.RuntimeException: while converting CASE WHEN `EMP`.`DEPTNO` IN (1) 
THEN 1 ELSE NULL END
        at 
org.apache.calcite.sql2rel.ReflectiveConvertletTable.lambda$registerNodeTypeMethod$0(ReflectiveConvertletTable.java:86)
        at 
org.apache.calcite.sql2rel.SqlNodeToRexConverterImpl.convertCall(SqlNodeToRexConverterImpl.java:63)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter$Blackboard.visit(SqlToRelConverter.java:5591)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter$Blackboard.visit(SqlToRelConverter.java:4875)
        at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter$Blackboard.convertExpression(SqlToRelConverter.java:5454)
        at 
org.apache.calcite.sql2rel.StandardConvertletTable.lambda$new$9(StandardConvertletTable.java:205)
        at 
org.apache.calcite.sql2rel.SqlNodeToRexConverterImpl.convertCall(SqlNodeToRexConverterImpl.java:63)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter$Blackboard.visit(SqlToRelConverter.java:5591)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter$Blackboard.visit(SqlToRelConverter.java:4875)
        at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter$Blackboard.convertExpression(SqlToRelConverter.java:5454)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter.createAggImpl(SqlToRelConverter.java:3316)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter.convertAgg(SqlToRelConverter.java:3158)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter.convertSelectImpl(SqlToRelConverter.java:784)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter.convertSelect(SqlToRelConverter.java:682)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter.convertQueryRecursive(SqlToRelConverter.java:3680)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:597)
        at 
org.apache.calcite.test.SqlToRelTestBase$TesterImpl.convertSqlToRel(SqlToRelTestBase.java:639)
        at 
org.apache.calcite.test.SqlToRelTestBase$TesterImpl.assertConvertsTo(SqlToRelTestBase.java:758)
        at 
org.apache.calcite.test.SqlToRelConverterTest$Sql.convertsTo(SqlToRelConverterTest.java:4502)
        at 
org.apache.calcite.test.SqlToRelConverterTest$Sql.ok(SqlToRelConverterTest.java:4494)
        at 
org.apache.calcite.test.SqlToRelConverterTest.testGroupByCaseWhen(SqlToRelConverterTest.java:4028){code}



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