字符串的处理

[heyu111]

怎么能在查询的时候把这列的值对应的转化成：

[u010412956]

楼主问问题最好说明白一点，比如有2个-，就把-替换为4个0 之类的说明下。

with t as
 (select '1002-1-1' subject_id
    from dual
  union all
  select '1002-10' from dual)
select replace(subject_id,
               '-',
               rpad('0', regexp_count(subject_id, '-') * 2, '0'))
  from t;

[heyu111]

就是把‘-’去掉替换为4个0 9i怎么办

[u010412956]

引用 2 楼 heyu111 的回复:

就是把‘-’去掉替换为4个0 9i怎么办

我没看清楚。 你的需求应该是把-替换为2个0，然后数字部分，如果不足2位的，前面再补个0？？？？

[heyu111]

就是把‘-’去掉，不足4位的补齐4位

[heyu111]

我是9i，在线等了 比如‘1002-10-2’输出为：1002-0010-0002，然后去掉‘-’

[善若止水]

引用 1 楼 u010412956 的回复:

楼主问问题最好说明白一点，比如有2个-，就把-替换为4个0 之类的说明下。

with t as
 (select '1002-1-1' subject_id
    from dual
  union all
  select '1002-10' from dual)
select replace(subject_id,
               '-',
               rpad('0', regexp_count(subject_id, '-') * 2, '0'))
  from t;

很好,佩服

[heyu111]

引用 6 楼 zhaoxiangchong 的回复:

[quote=引用 1 楼 u010412956 的回复:] 楼主问问题最好说明白一点，比如有2个-，就把-替换为4个0 之类的说明下。

with t as
 (select '1002-1-1' subject_id
    from dual
  union all
  select '1002-10' from dual)
select replace(subject_id,
               '-',
               rpad('0', regexp_count(subject_id, '-') * 2, '0'))
  from t;

很好,佩服[/quote] 不是我想要的啊！！！

[u010412956]

引用 7 楼 heyu111 的回复:

[quote=引用 6 楼 zhaoxiangchong 的回复:] [quote=引用 1 楼 u010412956 的回复:] 楼主问问题最好说明白一点，比如有2个-，就把-替换为4个0 之类的说明下。

with t as
 (select '1002-1-1' subject_id
    from dual
  union all
  select '1002-10' from dual)
select replace(subject_id,
               '-',
               rpad('0', regexp_count(subject_id, '-') * 2, '0'))
  from t;

很好,佩服[/quote] 不是我想要的啊！！！[/quote] 我知道，开始理解错你意思了。 9i都不能用正则啊，我得想想

[u010412956]

引用 7 楼 heyu111 的回复:

[quote=引用 6 楼 zhaoxiangchong 的回复:] [quote=引用 1 楼 u010412956 的回复:] 楼主问问题最好说明白一点，比如有2个-，就把-替换为4个0 之类的说明下。

with t as
 (select '1002-1-1' subject_id
    from dual
  union all
  select '1002-10' from dual)
select replace(subject_id,
               '-',
               rpad('0', regexp_count(subject_id, '-') * 2, '0'))
  from t;

很好,佩服[/quote] 不是我想要的啊！！！[/quote] 11g

with t as
 (select '1002-1-3' subject_id
    from dual
  union all
  select '1002-10'
    from dual
  union all
  select '1002-2' from dual)
select listagg(subject_id1, '') within group(order by rownum)
  from (select subject_id,
               lpad(regexp_substr(subject_id, '[^-]+', 1, level), 4, '0') subject_id1
          from t
        connect by subject_id = prior subject_id
               and level <= regexp_count(subject_id, '-') + 1
               and prior dbms_random.value is not null)
 group by subject_id;

[空心兜兜]

这个应该是很容易的啊