anchor.diff:      ;
   
   alterTable
  -    : alterTableNameWithAsterisk (alterTableActions | renameColumnSpecification | renameConstraint) | alterTableNameExists renameTableSpecification_
  +    : ALTER TABLE tableExistClause_ onlyClause_ tableName asteriskClause_ (alterTableActions | renameColumnSpecification | renameConstraint | renameTableSpecification_)
       ;
   
   alterIndex
  
positive.code: onlyClause_
      : ONLY?
      ;
  
  
  
  
negative.code:     : IDENTIFIER_
      ;
  
  renameTableSpecification_
      : RENAME TO newTableName
      ;
  