Oracle递归查询

关系表：sys_function

id ：主键id

pid：父关系id

Oracle函数：start with…connect by…prior

1.表数据

select * from family;

2.查询自己和自己所有的后代

select s.*

from family s

start with s.id = 'me'

connect by prior s.id = s.pid;

3.查询自己和自己的祖先

select s.*

from family s

start with s.id = 'me'

connect by s.id = prior s.pid;

4.查询自己所有的后代(不包括自己)

select s.*

from family s

start with s.pid = 'me'

connect by prior s.id = s.pid;

5.查询自己的第一代孩子和祖先(包括自己)

select s.*

from family s

start with s.pid = 'me'

connect by s.id = prior s.pid;