SqlServer 无限递归目录树且输出层级

ALTER VIEW [dbo].[view_TreeLevel]
AS
WITH cte
AS (
SELECT a.ModuleID,a.Module_Name,a.Module_Description,a.Module_FatherID,a.Module_Url,a.Module_Order,1 Level FROM TT_TreeView a WHERE a.Module_FatherID=0
UNION ALL 
SELECT b.ModuleID,b.Module_Name,b.Module_Description,b.Module_FatherID,b.Module_Url,b.Module_Order,Level+1 FROM TT_TreeView b INNER JOIN cte c ON b.Module_FatherID = c.ModuleID
)
SELECT TOP 100 PERCENT * FROM cte ORDER BY Level

CREATE TABLE [dbo].[AreaTable](  
[Id] int PRIMARY KEY IDENTITY(1,1) NOT NULL,[Name] [varchar](50) NOT NULL,[Parent] int NOT NULL,)  
GO  
  
INSERT INTO [AreaTable]    
SELECT '中国',0 UNION ALL  
SELECT '广东',1 UNION ALL  
SELECT '湖南',1 UNION ALL  
SELECT '深圳',2 UNION ALL  
SELECT '长沙',3 UNION ALL  
SELECT '福田',4 UNION ALL  
SELECT '南山',4 UNION ALL  
SELECT '天心',5 UNION ALL  
SELECT '岳麓',5 UNION ALL  
SELECT '芙蓉',5 UNION ALL  
SELECT '蛇口',7 UNION ALL  
SELECT '科技园',7   
GO  

--查询全国  
WITH temp  
AS  
(  
SELECT *,1 Level FROM [AreaTable]  WHERE Parent = 1  --1全国  2广东
UNION ALL  
SELECT m.*,Level+1  FROM [AreaTable]  AS m  
INNER JOIN temp AS child ON m.Parent = child.Id  
)  
SELECT * FROM temp ORDER BY temp.Level

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!