oracle拆分字符串

SELECT REGEXP_SUBSTR ('abc1,cbd2,db3,db5', '[^,]+', 1,rownum)

      FROM DUAL

     CONNECT BY ROWNUM <=

      LENGTH ('abc1,cbd2,db3,db5') - LENGTH (REPLACE ('abc1,cbd2,db3,db5', ',', ''))+1; 

原文：https://blog.csdn.net/mchdba/article/details/51946573