例子:
表名:tsys_organization
id pid name
6000001 bizroot A
0_1000200 6000001 B
0_1000202 0_1000200 C查出id为'0_1000202'的父id,以及父id的父id......无限循环任性往上查
利用START WITH CONNECT BY PRIOR子句实现:
select t.idfrom tsys_organization tSTART WITH t.id='0_1000202' CONNECT BY PRIOR t.pid=t.id