我为此SQLFIDDLE
创建了一个示例小提琴CREATE TABLE [dbo].[Users](
[userId] [int] ,
[userName] [varchar](50) ,
[managerId] [int] ,
)
INSERT INTO dbo.Users
([userId], [userName], [managerId])
VALUES
(1,'Darry',NULL),
(2,'Cono',1),
(3,'Abros',2),
(4,'Natesh',1),
(5,'Ani',3),
(6,'Raju',5),
(7,'Pinky',5),
(8,'Miya',4)
我的要求就像在特定经理下面显示所有员工层次结构
这是我试过的
WITH UserCTE AS (
SELECT userId, userName, managerId, 0 AS EmpLevel
FROM Users where managerId IS NULL
UNION ALL
SELECT usr.userId, usr.userName, usr.managerId, mgr.[EmpLevel]+1
FROM Users AS usr
INNER JOIN UserCTE AS mgr
ON usr.managerId = mgr.userId where usr.managerId IS NOT NULL
)
SELECT *
FROM UserCTE AS u where u.ManagerId=3
ORDER BY EmpLevel;
输出
userName
--------
Ani
我期待的输出是,如果我给ManagerId 3,那么应该显示以下员工
1.Abros
2.Ani
3.Raju
4.Pinky
任何人都可以帮忙吗
答案 0 :(得分:6)
试试这个。过滤器必须应用于CTE的Anchor query
WITH UserCTE
AS (SELECT userId,
userName,
managerId,
0 AS EmpLevel
FROM [Users]
WHERE managerId = 3
UNION ALL
SELECT usr.userId,
usr.userName,
usr.managerId,
mgr.[EmpLevel] + 1
FROM [Users] AS usr
INNER JOIN UserCTE AS mgr
ON usr.managerId = mgr.userId
WHERE usr.managerId IS NOT NULL)
SELECT *
FROM UserCTE AS u
ORDER BY EmpLevel;