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Oracle 树操作
select…start with…connect by…prior
1.查找一个节点的所有直属子节点(节点本身+所有后代),有以下两种写法。
select id, typename, typecode, parentid, ordernumfrom purchase_typewhere status = 1 start with id = ‘15‘ connect by parentid = prior id
order siblings by ordernum
或
select id, typename, typecode, parentid, ordernumfrom purchase_typewhere status = 1 start with id = ‘15‘ connect by prior id = parentid order siblings by ordernum
显示结果:
2.查找一个节点的所有直属父节点(节点本身+所有祖宗(父类的父类....))。
select id, typename, typecode, parentid, ordernum
from purchase_type
where status = 1
start with id = ‘136‘
connect by id = prior parentid
order siblings by ordernum
或
select id, typename, typecode, parentid, ordernumfrom purchase_typewhere status = 1 start with id = ‘136‘ connect by prior parentid = id order siblings by ordernum
显示结果:
Oracle 树操作
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