oracle分隔字符串列转行
1. DEMO:
SELECT REGEXP_SUBSTR('1,2', '[^,]+', 1, LEVEL)
FROM DUAL
CONNECT BY REGEXP_SUBSTR('1,2', '[^,]+', 1, LEVEL) IS NOT NULL
2.应用场景,具体看业务需求
select to_char(wm_concat(f.title))
from (select 1 id, '短信' title
from dual
union all
select 2 id, '邮件' title from dual) f
where f.id in
(SELECT REGEXP_SUBSTR('1,2', '[^,]+', 1, LEVEL)
FROM DUAL
CONNECT BY REGEXP_SUBSTR('1,2', '[^,]+', 1, LEVEL) IS NOT NULL)