oracle 表中有子父关系列则使用CONNECT BY PRIOR

SELECT re.UUID
FROM INF_xxx re
CONNECT BY PRIOR re.UUID = re.PARENT_UUID
START WITH re.xxx_name in ('xxx', 'xx')

SQL> SELECT ROWNUM FROM DUAL CONNECT BY ROWNUM <= 10;

ROWNUM
----------
1
2
3
4
5
6
7
8
9
10

10 rows selected

SELECT TO_CHAR(TO_DATE('2013-01-01', 'YYYY-MM-DD') + ROWNUM - 1,
'YYYY-MM-DD') AS SYSTEMDATE
FROM DUAL
CONNECT BY ROWNUM <= 30;

SELECT SUBSTR('ORACLE',ROWNUM,1) FROM DUAL
CONNECT BY ROWNUM=LENGTH('ORACLE')