[ subquery_factoring_clause ]
SELECT
   [ hint ]
   [ { { DISTINCT | UNIQUE }
     | ALL
     }
   ]
   select_list
   FROM { table_reference [, table_reference ]...
               | join_clause
               | ( join_clause )
               }
   [ where_clause ]
   [ hierarchical_query_clause ]
   [ group_by_clause ]
   [ HAVING condition ]
   [ model_clause ]
   [ { UNION [ ALL ]
     | INTERSECT
     | MINUS
     }
     (subquery)
   ]
   [ order_by_clause ]