sql server 树形表的一些操作

--通过子节点查询父节点
WITH
TREE AS(
SELECT * FROM tstructure
WHERE id = '要查询的子 id'
UNION ALL
SELECT tstructure.* FROM tstructure, TREE
WHERE TREE.parent = tstructure.id
)
SELECT * FROM TREE

--通过父节点查询子节点
WITH
TREE AS(
SELECT * FROM tstructure
WHERE parent = '要查询的父 id'
UNION ALL
SELECT tstructure.* FROM tstructure, TREE
WHERE tstructure.parent = TREE.id
)
SELECT * FROM TREE