get all the child categories in the parent category

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Views: 1144 | Replies: 6 | Solved

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get all the child categories in the parent category

Feb 8th, 2008

what is the required t-sql for getting all the child categories in a parent category?
my table is like this : id | name | parentid

Serkan Şendur
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Re: get all the child categories in the parent category

Feb 8th, 2008

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SELECT     dbo.Category.Name, dbo.Category.ID
FROM         dbo.Category LEFT OUTER JOIN
                      dbo.Category AS Category_1 ON dbo.Category.ID = Category_1.ParentID
WHERE     (Category_1.ParentID IS NULL)

B.Sc Computer Science, Helwan University
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Re: get all the child categories in the parent category

Feb 8th, 2008

absolutely RamyMahrous.

Last edited by Jx_Man : Feb 8th, 2008 at 10:28 pm.

Never tried = Never Know
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Re: get all the child categories in the parent category

Feb 11th, 2008

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Originally Posted by RamyMahrous

Help with Code Tags

(Toggle Plain Text)
SELECT     dbo.Category.Name, dbo.Category.ID
FROM         dbo.Category LEFT OUTER JOIN
                      dbo.Category AS Category_1 ON dbo.Category.ID = Category_1.ParentID
WHERE     (Category_1.ParentID IS NULL)
SELECT dbo.Category.Name, dbo.Category.ID FROM dbo.Category LEFT OUTER JOIN dbo.Category AS Category_1 ON dbo.Category.ID = Category_1.ParentID WHERE (Category_1.ParentID IS NULL)

Thanks but this is not what i want. i want to pass cat.id as parameter and get all the childrows in it.
example

catid | catname | parentid
1 | 1 | null
2 |1.1 |1
3 |1.2 |1
4 |1.1.1 |2
5 |1.2.1 |3

when i pass a catid = 1 as parameter to procedure i want to get all these records except the first main root one.

Last edited by serkansendur : Feb 11th, 2008 at 3:05 am.

Serkan Şendur
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Re: get all the child categories in the parent category

Feb 12th, 2008

Sorry for being late as I was in Army last two days..

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SELECT     Category_1.Name
FROM         Category LEFT OUTER JOIN
                      Category AS Category_1 ON Category.ID = Category_1.ParentID
WHERE     (Category_1.ParentID = 1)

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Re: get all the child categories in the parent category

Feb 13th, 2008

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Originally Posted by RamyMahrous

Sorry for being late as I was in Army last two days..
Help with Code Tags

(Toggle Plain Text)
SELECT     Category_1.Name
FROM         Category LEFT OUTER JOIN
                      Category AS Category_1 ON Category.ID = Category_1.ParentID
WHERE     (Category_1.ParentID = 1)
SELECT Category_1.Name FROM Category LEFT OUTER JOIN Category AS Category_1 ON Category.ID = Category_1.ParentID WHERE (Category_1.ParentID = 1)

Thanks but this is not what i wanted, i want to see the childs recursively, i want to see the grand childs, childs of grands childs and so on.

Serkan Şendur
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Re: get all the child categories in the parent category

Feb 13th, 2008

the t-sql below worked :

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set statistics time on
set statistics io on
declare @Topid_in int -- The top level we want to resolve children for
select @topid_in = 1;
with Hierarchycte (id, ParentID, name) as	
(select id, parentid, name
	from cat
	where id = @topid_in
	union all	
select cat.id, cat.parentid	,cat.name
from cat	
inner join hierarchycte	
	on cat.parentid = hierarchycte.id)
select * from hierarchycte

Serkan Şendur
MCAD.NET