字符串转 多行 ，判断给定一组id ,查库中不存在用

Posted 2021-01-07 struts-pring

SELECT REGEXP_SUBSTR(‘17,20,23‘, ‘[^,]+‘, 1, LEVEL, ‘i‘) AS STR  

  FROM DUAL  

CONNECT BY LEVEL <=  

           LENGTH(‘17,20,23‘) - LENGTH(REGEXP_REPLACE(‘17,20,23‘, ‘,‘, ‘‘))+1;