Delete Tree Node Records from Database

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Hi,

I am using treeview control and wanted to delete the records from the relation table.

I am having table structure like this

Node id      Parent id

1		0
2		1
3		1
4		2
5		3
6		4
7		5

If I select 1st Node(is 0 i.e. Root node) then I want to delete all the records from the database

Thanks
Sjs4u

Posted 18-Sep-11 21:19pm

sjs4u

Updated 18-Sep-11 21:22pm

Prerak Patel

v2

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Prerak Patel 19-Sep-11 3:22am

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2 solutions

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Mehdi Gholam · Answer 1 · 2011-09-18T21:46:00

Solution 1

Implementing tree structures in a database is not recommended because of recursion and performance issues, but here are a few good links :

Adjacency List Model

Managing Hierarchical Data in MySQL

Trees and Other Hierarchies in MySQL

Posted 18-Sep-11 21:46pm

Mehdi Gholam

PrahladMca · Answer 2 · 2011-09-18T22:05:00

set QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[usp_TreeNode_select]
@TreeNodeID INT
AS
BEGIN
SET NOCOUNT ON;

BEGIN
SELECT TreeNodeID
, ISNULL(ParentNodeID, 0) ParentNodeID
, Title
FROM [dbo].[TreeNode]
WHERE (@TreeNodeID = 0 OR TreeNodeID = @TreeNodeID)
ORDER BY ParentNodeID, TreeNodeID
END
END

/*** STORED PROCEDURE 3 ***/

u can find all child corresponding node then delete query Fire From According to TreeNode Id