[jira] [Created] (FLINK-40920) SELECT 1 / (2 + 3) fails with ClassCastException: RexCall cannot be cast to RexLiteral in ExpressionReducer

[Yaoxuan Wu (Jira)]

Yaoxuan Wu created FLINK-40920:
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             Summary: SELECT 1 / (2 + 3) fails with ClassCastException: RexCall 
cannot be cast to RexLiteral in ExpressionReducer
                 Key: FLINK-40920
                 URL: https://issues.apache.org/jira/browse/FLINK-40920
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Planner
    Affects Versions: 2.3.0
            Reporter: Yaoxuan Wu


{{*SELECT 1 / (2 + 3)*}}

{{*SELECT 1 / (2 * 3)*}}

{{*SELECT 1.0 / (2 * 3)*}}

all fail during optimization:
{code:java}
// code placeholder
{code}
java.lang.ClassCastException: class org.apache.calcite.rex.RexCall cannot be 
cast to class org.apache.calcite.rex.RexLiteral   at 
org.apache.flink.table.planner.codegen.ExpressionReducer.$anonfun$skipAndValidateExprs$2(ExpressionReducer.scala:289)
   at 
org.apache.flink.table.planner.codegen.ExpressionReducer.skipAndValidateExprs(ExpressionReducer.scala:264)
   at 
org.apache.flink.table.planner.codegen.ExpressionReducer.reduce(ExpressionReducer.scala:72)
   at 
org.apache.calcite.rel.rules.ReduceExpressionsRule.reduceExpressionsInternal(ReduceExpressionsRule.java:774)



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