[jira] [Created] (FLINK-26829) ClassCastException will be thrown when the second operand of divide is a function call

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

luoyuxia created FLINK-26829:
--------------------------------

             Summary: ClassCastException will be thrown  when the second operand of divide is a function call
                 Key: FLINK-26829
                 URL: https://issues.apache.org/jira/browse/FLINK-26829
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Planner
    Affects Versions: 1.15.0
            Reporter: luoyuxia
             Fix For: 1.16.0


Can be reproduced by add the following code in SqlExpressionTest#testDivideFunctions

 
{code:java}
testExpectedSqlException(
  "1/POWER(5, 5)", divisorZeroException, classOf[ArithmeticException]) {code}
 

 

Then the method ExpressionReducer#skipAndValidateExprs will throw the exception:

 
{code:java}
java.lang.ClassCastException: org.apache.calcite.rex.RexCall cannot be cast to org.apache.calcite.rex.RexLiteral  {code}
 

The following code will cast the DEVIDE's second op to RexLiteral, but it maybe a function call.

 
{code:java}
// according to BuiltInFunctionDefinitions, the DEVIDE's second op must be numeric
assert(RexUtil.isDeterministic(divisionLiteral))
val divisionComparable = {
  divisionLiteral.asInstanceOf[RexLiteral].getValue.asInstanceOf[Comparable[Any]]
} {code}
 

 

 



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