userkdg commented on issue #13972:
URL: 
https://github.com/apache/shardingsphere/issues/13972#issuecomment-987691369


   > I will check on this soon.
   
   ``` java
   
    private SubstitutableColumnNameToken generateSQLTokens(final String 
tableName, final ColumnProjectionSegment columnSegment, 
                                                              final 
ColumnProjection columnProjection, final SubqueryType subqueryType) {
           Collection<ColumnProjection> projections = 
generateProjections(tableName, columnProjection, subqueryType, false);
           int startIndex = columnSegment.getColumn().getOwner().isPresent() ? 
columnSegment.getColumn().getOwner().get().getStopIndex() + 2 : 
columnSegment.getColumn().getStartIndex();
           int stopIndex = columnSegment.getStopIndex();
           return new SubstitutableColumnNameToken(startIndex, stopIndex, 
projections);
       }
       
   ```
   
   i dont understand ** 
columnSegment.getColumn().getOwner().get().getStopIndex() + 2 **, startIndex  
need add 2 
   
   


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