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博客园 - MyFavorite

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Oracle:分割字符串
MyFavorite · 2012-10-29 · via 博客园 - MyFavorite

ids                           id

3,4,5                        7

13,14,15,16             17

想要使用sql,实现将ids按照逗号分割后查询到如下记录:

ids                           id

3                              7

4                              7

5                              7

13                            17

14                            17

15                            17

16                            17 

在Oracle9i以上版本中,可以使用regexp_substr实现。具体sql语句如下:

select id,ids from(

  select regexp_substr(ids, '[^,]+',1,lvl) ids, lvl, id from tbl,

  (select level lvl from dual connect by

  level < =(select max(length(regexp_replace(ids,'[^,]','')))+1 max_tokens from tbl))

) where ids is not null order by lvl