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

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

     [ https://issues.apache.org/jira/browse/FLINK-26829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

godfrey he reassigned FLINK-26829:
----------------------------------

    Assignee: luoyuxia

> 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
>            Assignee: luoyuxia
>            Priority: Major
>             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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