Update or Delete the Parent Tree Node and thier Child Node

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Hi,

I am doing web application in that I used treeview control. I already bind the values to tree node.
I am having table like given below.

UniqueID NormalisedId ParentNormaliseId(Parent Node)
1 1 0 -(Root Node level 1)
2 2 1 -(Root Node level 2)
3 3 2
4 4 3
5 5 1 -(Root Node level 2)

in above case 1 is parent node now if i select node which is 1 then i want to delete all the child node i.e. 2,3,4

The level can be increase to n

How can I do this using recursive function or any query for the same

Thanks,
sjs

Posted 18-Aug-11 23:19pm

sjs4u

Updated 18-Aug-11 23:25pm

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Shameel · Answer 1 · 2011-08-18T23:37:00

Solution 1

The easiest way is to create a self referring foreign key from ParentNormaliseId to NormalisedId (or UniqueID as the case may be) with the CASCADE DELETE option. And then when you delete the parent row, all child rows will be deleted automatically.

Posted 18-Aug-11 23:37pm

Shameel

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sjs4u 19-Aug-11 5:41am

can you give me example in the above case or do you have any link for the same?