Oracle 如何根据其他值选择值

我有一个数据表，如下所示

no  s   d
100 I   D
100 C   D
101 C   null
101 I   null
102 C   D
102 I   null

100 C D
101 I NULL
102 I NULL

然后我使用这个查询来进行分区

create table pinky nologging as
select no,status,dead
from(select  no,status,dead,
    row_number() over(partition by no order by dead desc) seq
  from PINK) d
where seq = 1;

我得到了这个结果

100 I   D
101 C   null
102 I   null

但我需要如下所示的数据

no  s   d
100 I   D
100 C   D
101 C   null
101 I   null
102 C   D
102 I   null

100 C D
101 I NULL
102 I NULL

i、 e

对于I和C组合，并且两个d列都是d，则选择C

对于I和C组合，并且两个d列都为null，则选择I

对于I和C组合，d列为null，d则选择null对应值

---

假设每个

no

只能有一条

dead为null

记录：

with 
    -- you data, remove it when running the query 
    -- in your environment ...
    pink (no, status, dead) as 
        (select  100, 'I',  'D'  from dual union 
         select  100, 'C',  'D'  from dual union
         select  101, 'C', null  from dual union
         select  101, 'I', null  from dual union
         select  102, 'C',  'D'  from dual union
         select  102, 'I', null  from dual 
    ), 
    -- ... end of you data 
    --
    temp as (   -- a temporary table (CTE) where we make some 
                -- preliminary calculations
        select  pink.*, 
                -- count rows with status = 'I' for this no
                sum(case when status = 'I' then 1 else 0 end) over(partition by no) ni,
                -- count rows with status = 'C' for this no
                sum(case when status = 'C' then 1 else 0 end) over(partition by no) nc,
                -- count rows with dead = 'D' for this no
                sum(case when dead   = 'D' then 1 else 0 end) over(partition by no) nd,
                -- total number of rows (in case it's not always = 2)
                count(*) over(partition by no) n
        from    pink
    )
select  no, status, dead 
from    temp    
where   -- pick 'C' if there's also 'I' and all dead = 'D'
        status = 'C' and ni > 0 and nd = n
        -- pick 'I' if there's also 'C' and all dead is null
   or   status = 'I' and nc > 0 and nd = 0
        -- pick dead is null if there are I's and C's and 
        -- all other dead's = 'D' 
   or   dead is null and ni > 0 and nc > 0 and n - nd = 1;

---

是否总是有成对的记录，每个记录都

否
？或者可以有两个以上的记录，其中有一些
没有
？