wuchong commented on a change in pull request #10536: [FLINK-15191][connectors 
/ kafka]Fix can't create table source for Kafka if watermark or computed column 
is defined.
URL: https://github.com/apache/flink/pull/10536#discussion_r358046608
 
 

 ##########
 File path: 
flink-table/flink-table-planner-blink/src/main/java/org/apache/flink/table/api/TableUtils.java
 ##########
 @@ -100,7 +101,7 @@
         * for external output.
         */
        private static TableSchema buildNewTableSchema(Table table) {
-               TableSchema oldSchema = table.getSchema();
+               TableSchema oldSchema = 
TableSchemaUtils.getPhysicalTableSchema(table.getSchema());
 
 Review comment:
   I think we shouldn't change this line. The schema of `Table` may contains 
generated columns, but the generated column should also be outputed. 

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