SELECT SUBSTR (T.RPT_ID,
INSTR (T.RPT_ID,',1,C.LV)+ 1,C.LV + 1)- (INSTR (T.RPT_ID,C.LV)+ 1))
AS RPT_ID
FROM (SELECT ',' || '85,86,87' || ',' RPT_ID,
LENGTH ('85,') - NVL (LENGTH (REPLACE ('85,86',')),0) CNT
FROM DUAL) t,
(SELECT LEVEL lv
FROM DUAL
CONNECT BY LEVEL <= LENGTH('85,') - NVL(LENGTH(REPLACE('85,87',0)) c
WHERE T.cnt >= c.lv
说明：CNT表示串里面有多少字符。
当是字符串是表中的字段时，取level<=最大个数
如：
１）.取最大个数
SELECT MAX(LENGTH(RPT_ID || ',') -
NVL(LENGTH(REPLACE(RPT_ID,0)) INTO v_c
FROM DIM_AUDIT_TABLE@sjmh_inter;
２）.l转成行
SELECT T.T_NAME,
T.T_NAME_COMM,
T.T_COLUMN,
T.T_COLUMN_COMM,
t.COMMENT_NL,
t.COMMENT_NL_TIME,
t.SEQ_USER_ID,
SUBSTR(T.RPT_ID,
INSTR(T.RPT_ID,'',C.LV) + 1,C.LV + 1) -
(INSTR(T.RPT_ID,C.LV) + 1)) AS RPT_ID
FROM (SELECT A.T_NAME,
A.T_NAME_COMM,
A.T_COLUMN,
A.T_COLUMN_COMM,
a.COMMENT_NL,
a.COMMENT_NL_TIME,
a.SEQ_USER_ID,
'','' || A.RPT_ID || '','' RPT_ID,
LENGTH(A.RPT_ID || '','') -
NVL(LENGTH(REPLACE(A.RPT_ID,'')),0) CNT
FROM DIM_AUDIT_TABLE@sjmh_inter A
WHERE a.COMMENT_NL is not null) T,
(SELECT LEVEL LV FROM DUAL CONNECT BY LEVEL <= '||v_c||') C
WHERE C.LV <= T.CNT;

代码是远程的代码,(SELECT LEVEL LV FROM DUAL CONNECT BY LEVEL <= '||v_c||') C,不要用dual表,可以改用all_objects或user_objects,要不然能查询,但是把查询出来的sql插入到某个表时,只能插入一行