Sql 如何在oracle中对单个搜索结果使用ORDER BY？

我在oracle中做了一个小查询，以一种方式显示搜索结果，首先在开始时匹配WHEN子句结果，最后在结束时匹配WHEN子句结果。现在我想对第一个匹配的结果按DESC顺序进行排序，其余结果按升序进行排序

下面是使用的示例数据

CREATE table test(id int, title varchar(50), place varchar(20), 
postcode varchar(20));
insert into test values(1,'gatla51','hyd','31382');
insert into test values(2,'sekhar91','kanigiri','91982');
insert into test values(3,'ravi32','ongole','41482');
insert into test values(4,'reddy42','guntur','31281');

这是我提出的问题（当然有人帮了我，因为我对oracle非常陌生）：

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但是这个查询正在对所有结果进行排序。如何对个人结果进行排序，建议将不胜感激。

这里有一种方法。请注意ORDER BY条款：

select title, place, postcode
from (select title, place, postcode,
             (case when postcode like '%9%' then 1
                   when place LIKE '%9%' then 2
                   when title LIKE '%9%' then 3
                   else 0
              end) as matchresult
      from test
     ) d
where matchresult > 0
order by CASE WHEN MATCHRESULT = 1 THEN ZIP END DESC NULLS LAST,
         CASE WHEN MATCHRESULT = 2 THEN PLACE END,
         CASE WHEN MATCHRESULT = 3 THEN TITLE END

select title, place, postcode
from (select title, place, postcode,
             (case when postcode like '%9%' then 1
                   when place LIKE '%9%' then 2
                   when title LIKE '%9%' then 3
                   else 0
              end) as matchresult                 
      from test
     ) d
where matchresult > 0
order by matchresult,
         (case when matchresult = 1 then postcode end) desc,
         (case when matchresult = 2 then place
               when matchresult = 3 then title
          end) asc

---

非常感谢你的帮助

select title, place, postcode
from (select title, place, postcode,
             (case when postcode like '%9%' then 1
                   when place LIKE '%9%' then 2
                   when title LIKE '%9%' then 3
                   else 0
              end) as matchresult                 
      from test
     ) d
where matchresult > 0
order by matchresult,
         (case when matchresult = 1 then postcode end) desc,
         (case when matchresult = 2 then place
               when matchresult = 3 then title
          end) asc