下面是一个简单的Family Tree 示例：
复制代码 代码如下:
DECLARE @TT TABLE (ID int,Relation varchar(25),Name varchar(25),ParentID int)
INSERT @TT SELECT 1,' Great GrandFather' , 'Thomas Bishop', null UNION ALL
SELECT 2,'Grand Mom', 'Elian Thomas Wilson' , 1 UNION ALL
SELECT 3, 'Dad', 'James Wilson',2 UNION ALL
SELECT 4, 'Uncle', 'Michael Wilson', 2 UNION ALL
SELECT 5, 'Aunt', 'Nancy Manor', 2 UNION ALL
SELECT 6, 'Grand Uncle', 'Michael Bishop', 1 UNION ALL
SELECT 7, 'Brother', 'David James Wilson',3 UNION ALL
SELECT 8, 'Sister', 'Michelle Clark', 3 UNION ALL
SELECT 9, 'Brother', 'Robert James Wilson', 3 UNION ALL
SELECT 10, 'Me', 'Steve James Wilson', 3
----------Query---------------------------------------
;WITH FamilyTree
AS(
SELECT *, CAST(NULL AS VARCHAR(25)) AS ParentName, 0 AS Generation FROM @TT
WHERE ParentID IS NULL
UNION ALL
SELECT Fam.*,FamilyTree.Name AS ParentName, Generation + 1 FROM @TT AS Fam
INNER JOIN FamilyTree ON Fam.ParentID = FamilyTree.ID
)SELECT * FROM FamilyTree
Output:
希望对您有帮助
Author: Petter Liu
【使用SQLSERVER 2005/2008 递归CTE查询树型结构的方法】相关文章：
★ 重装MS SQL Server 2000前必须彻底删除原安装文件的方法
★ SQL Server 2008 R2安装配置方法图文教程
★ SQL2008中 阻止保存要求重新创建表的更改 的解决方法
★ SQL Server 2008 数据库中创建只读用户的方法