[jira] [Created] (CALCITE-6227) ELEMENT(NULL) causes an assertion failure

[Mihai Budiu (Jira)]

Mihai Budiu created CALCITE-6227:
------------------------------------

             Summary: ELEMENT(NULL) causes an assertion failure
                 Key: CALCITE-6227
                 URL: https://issues.apache.org/jira/browse/CALCITE-6227
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.36.0
            Reporter: Mihai Budiu


Adding the following test to SqlValidatorTest:
{code:java}
@Test void testElement() {
    expr("element(null)").columnType("null");
}
{code}

causes an assertion failure. The bottom of the stack trace is the following:

{code}
        at org.apache.calcite.sql.type.ReturnTypes$2.get(ReturnTypes.java:577)
        at org.apache.calcite.sql.type.ReturnTypes$2.get(ReturnTypes.java:571)
        at 
org.apache.calcite.sql.ExplicitOperatorBinding.getOperandType(ExplicitOperatorBinding.java:78)
        at 
org.apache.calcite.sql.SqlOperatorBinding$1.get(SqlOperatorBinding.java:255)
        at 
org.apache.calcite.sql.SqlOperatorBinding$1.get(SqlOperatorBinding.java:253)
        at 
org.apache.calcite.sql.type.SqlTypeFactoryImpl.leastRestrictive(SqlTypeFactoryImpl.java:174)
        at 
org.apache.calcite.rel.type.RelDataTypeFactory.leastRestrictive(RelDataTypeFactory.java:222)
        at 
org.apache.calcite.sql.type.ReturnTypes.lambda$static$3(ReturnTypes.java:537)
        at 
org.apache.calcite.sql.type.ReturnTypes.lambda$static$6(ReturnTypes.java:586)
        at 
org.apache.calcite.sql.type.SqlTypeTransformCascade.inferReturnType(SqlTypeTransformCascade.java:58)
        at 
org.apache.calcite.sql.SqlOperator.inferReturnType(SqlOperator.java:534)
{code}



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