hequn8128 commented on a change in pull request #8062:  [FLINK-11884][table] 
Implement expression resolution on top of new Expressions
URL: https://github.com/apache/flink/pull/8062#discussion_r272864780
 
 

 ##########
 File path: 
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/api/Table.java
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 @@ -83,6 +84,11 @@
         */
        void printSchema();
 
+       /**
+        * Returns underlying logical representation of this table.
+        */
+       TableOperation getTableOperation();
 
 Review comment:
   This method seems a method in the implementation(TableImpl) instead of in 
the api(Table). If I understand correctly, after we remove the `tableRef()` 
method in `ApiExpressionUtils`, this `getTableOperation` method will not be 
used at the api level? 

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