Add node type to list

Author: caicancai

core/src/main/java/org/apache/calcite/sql/type/OperandTypes.java

@@ -1570,17 +1570,20 @@ private static class MapFunctionOperandTypeChecker
     private static void coerceOperands(SqlCallBinding callBinding,
         List<RelDataType> operandTypes,
         RelDataType keyType, RelDataType valueType) {
+      final SqlValidator validator = callBinding.getValidator();
       final SqlCall call = callBinding.getCall();
       final List<SqlNode> operands = call.getOperandList();
       for (int i = 0; i < operands.size(); i++) {
         final RelDataType targetType = i % 2 == 0 ? keyType : valueType;
         if (operandTypes.get(i).getSqlTypeName()
             != targetType.getSqlTypeName()) {
-          call.setOperand(i,
+          final SqlNode castNode =
               SqlStdOperatorTable.CAST.createCall(SqlParserPos.ZERO,
                   operands.get(i),
                   SqlTypeUtil.convertTypeToSpec(targetType)
-                      .withNullable(targetType.isNullable())));
+                      .withNullable(targetType.isNullable()));
+          call.setOperand(i, castNode);
+          validator.setValidatedNodeType(castNode, targetType);
         }
       }
     }