SQL Server 树形表非循环递归查询
很多人可能想要查询整个树形表关联的内容都会通过循环递归来查...事实上在微软在SQL2005或以上版本就能用别的语法进行查询，下面是示例。--通过子节点查询父节点
WITH
TREE AS(
SELECT * FROM tstructure
WHERE id = 6-- 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 = 2-- 要查询的父 id
UNION ALL
SELECT tstructure.* FROM tstructure, TREE
WHERE tstructure.parent = TREE.id
)
SELECT * FROM TREE
来一个我现实中用到的代码吧
WITH tree
AS
(
SELECT * FROM .WHERE url='{0}'
UNION ALL
SELECT ..* FROM ., tree WHERE TREE.fid = ..id
)
SELECT distinct * FROM tree order by code desc
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