snuyanzin commented on code in PR #27594:
URL: https://github.com/apache/flink/pull/27594#discussion_r2888858478


##########
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/operations/materializedtable/MaterializedTableChangeHandler.java:
##########
@@ -418,58 +424,55 @@ private void 
checkForChangedPositionByQuery(List<TableChange> tableChanges, Sche
                             oldColumns.get(persistedColumnOffset).getName(), 
newColumn);
                 }
             } else {
-                afterToColumnName.put(((TableChange.After) position).column(), 
newColumn);
+                afterToColumnName.put(((After) position).column(), newColumn);
             }
         }
 
-        for (int i = 1; i < oldColumns.size(); i++) {
+        for (int i = 0; i < oldColumns.size() - 1; i++) {

Review Comment:
   also there is an existing test for this already, however everything was ok 
since it was fast fail



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