oralce逗号分割变多行

oralce逗号分割变多行   方法一 select  a.*  ,  REGEXP_SUBSTR(a.rolecode ,'[^,]+',1,l) AS rolecode  from p_user a,(SELECT LEVEL l FROM DUAL CONNECT BY LEVEL<=100) b WHERE l <=LENGTH(a.rolecode) - LENGTH(REPLACE(r

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