使用 SQL 查询的树视图

我有一个区域表，我想要一个树视图（表简单地按树排序）是否可以使用sql查询帮助表示赞赏，我尝试使用自连接来做到这一点，但我没有得到所需的结果。

树视图是这样的

Indiv

• Div1
• • Zon1
• div2
• • zon2
• div3
• • zon3

EDIT:

根据 Charles Bretana 的建议，我在下面的查询中尝试了 CTE，但它没有给我想要的结果。

WITH Emp_CTE (id, ParentID, name)
AS (
SELECT id, ParentID, name
FROM eQPortal_Region
WHERE ParentID=0
UNION ALL
SELECT e.id, e.ParentID, e.name
FROM eQPortal_Region e
INNER JOIN Emp_CTE ecte ON ecte.id = e.ParentID
)
SELECT *
FROM Emp_CTE
GO

这就是结果..出了什么问题？

InDiv1

• Div1
• Div2
• Div3
• • Zon3
• • Zon2
• • zon1

这家伙莫里克·多拉吉亚完美回答了问题...

http://maulikdhorajia.blogspot.com/2012/06/sql-server-using-ctecommon-table.html http://maulikdhorajia.blogspot.com/2012/06/sql-server-using-ctecommon-table.html

制作了查询的副本..

;WITH CTECompany
AS
(
    SELECT 
    ID, 
    ParentID, 
    Name , 
    0 AS HLevel,
    CAST(RIGHT(REPLICATE('_',5) +  CONVERT(VARCHAR(20),ID),20) AS VARCHAR(MAX)) AS OrderByField
FROM Region
WHERE ParentID = 0

UNION ALL

SELECT 
    C.ID, 
    C.ParentID, 
    C.Name , 
    (CTE.HLevel + 1) AS HLevel,
    CTE.OrderByField + CAST(RIGHT(REPLICATE('_',5) +  CONVERT(VARCHAR(20),C.ID),20) AS VARCHAR(MAX)) AS OrderByField
FROM Region C
INNER JOIN CTECompany CTE ON CTE.ID = C.ParentID
WHERE C.ParentID IS NOT NULL


)

-- Working Example
SELECT 
ID
, ParentID
, HLevel
, Name
, (REPLICATE( '----' , HLevel ) + Name) AS Hierachy
FROM CTECompany
ORDER BY OrderByField