oracle分隔字符串列轉行

1. DEMO:

SELECT REGEXP_SUBSTR('1,2', '[^,]+', 1, LEVEL)
          FROM DUAL
        CONNECT BY REGEXP_SUBSTR('1,2', '[^,]+', 1, LEVEL) IS NOT NULL

 

 

2.應用場景，具體看業務需求

select to_char(wm_concat(f.title))
  from (select 1 id, '短信' title
          from dual
        union all
        select 2 id, '郵件' 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)