--此处假设status为0是失败,1成功
select companyid,max(createtime) d
    from 你的表
    group by companyid
    having (count(1)>1 and count(decode(status,0,null,1))=0)
        or (count(1)=1);

------解决方案--------------------
记得在companyid列建立索引

------解决方案--------------------
是要一次性，所有公司都查出来，还是一个公司 一个公司的查？

如果是所有公司都查出来，建议走后台 存储过程。

把所有逻辑写到后台PRC里，计算出来后，前台JAVA只管查结果表就好了。

------解决方案--------------------
建表语句，数据准备，能不能发出来？
老是回答者建表，搞数据，麻烦啊。
。。。。。。

------解决方案--------------------
探讨


这个表有其他很多字段，我我要展示所有字段的 .......


------解决方案--------------------
这个可以直接写一个存储过程来解决，

SQL code

create or replace procedure proc_history
h_id in number,--输入某公司的ID
is
h_countid integer;
h_countstate integer;
begin
select count(*) into h_countid from Table_history where id=h_id;
if h_countid=1 then
select * from Table_history where status=0 and id=h_id;--显示状态为失败（0）的数据
end if;

select count(*) into h_countstate from Table_history where status=1;
if h_countstate=0 then
select * from (select * from Table_history order by createtime desc) where rownum=1
end if;
end;

------解决方案--------------------
SQL code

-- 0:success 1:failed
WITH tb AS (
     SELECT 1 tid,'c1' copmanyid,0 status,TO_DATE('2011-04-01 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL UNION ALL
     SELECT 2 tid,'c2' copmanyid,1 status,TO_DATE('2011-04-02 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL UNION ALL
     SELECT 3 tid,'c3' copmanyid,1 status,TO_DATE('2011-04-03 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL UNION ALL
     SELECT 4 tid,'c3' copmanyid,0 status,TO_DATE('2011-04-04 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL UNION ALL
     SELECT 5 tid,'c3' copmanyid,1 status,TO_DATE('2011-04-05 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL UNION ALL
     SELECT 6 tid,'c4' copmanyid,1 status,TO_DATE('2011-04-08 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL UNION ALL
     SELECT 7 tid,'c4' copmanyid,1 status,TO_DATE('2011-04-07 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL UNION ALL
     SELECT 8 tid,'c4' copmanyid,1 status,TO_DATE('2011-04-09 15:10:42','yyyy-mm-dd hh24:mi:ss') createtime FROM DUAL
)
SELECT n.tid,
       n.copmanyid,
       n.status,
       n.createtime
  FROM (SELECT m.tid,
               m.copmanyid,
               m.status,
               m.createtime,
               ROW_NUMBER() OVER(PARTITION BY m.copmanyid ORDER BY m.createtime DESC, m.tid ASC) rn
          FROM (SELECT t.*,
                       COUNT(*) OVER(PARTITION BY t.copmanyid) total_cnt,
                       SUM(DECODE(t.status, 0, 1, 0)) OVER(PARTITION BY t.copmanyid) success_total_cnt
                  FROM tb t) m
         WHERE (m.total_cnt = 1 AND m.status = 1)
            OR (m.total_cnt > 1 AND m.success_total_cnt = 0)) n
 WHERE n.rn <= 2;

       TID COPMANYID     STATUS CREATETIME
---------- --------- ---------- -----------
         2 c2                 1 2011/04/02
         8 c4                 1 2011/04/09
         6 c4                 1 2011/04/08