Solved

sql order table with parentID

Posted on 2008-10-21
4
418 Views
Last Modified: 2012-06-21
Hi.

Please look at this question:
http://www.experts-exchange.com/Microsoft/Development/MS-SQL-Server/SQL-Server-2005/Q_23827855.html?cid=748#a22762575

It has been closed, so I cant ass comments to it.

I have a table:
ID   |   Name   |   ParentID
1    |  product1 |  NULL
2    |  product2 |  1
3    |  product3 |  2
4    |  product4 |  3
5    |  product5 |  4
6    |  product6 |  5

And I want to make a sql query who orders the products like etc:
Parent:
First child
Grandchildren
great grandchildren
second child
etc.

This SQL extracts all posts from the table:
;with product_hierarchy as
(select id,parentid,1 lev from products where parentid is null
union all
select p.id,p.parentid,ph.lev+1 from products p
join product_hierarchy ph
on ph.id = p.parentid
)
select * from product_hierarchy
0
Comment
Question by:bongii
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 37

Expert Comment

by:momi_sabag
ID: 22767730
try this

with product_hierarchy as
(select id,parentid,1 lev , id as path
from products where parentid is null
union all
select p.id,p.parentid,ph.lev+1 , ph.path+'.'+p.id as path
from products p
join product_hierarchy ph
on ph.id = p.parentid
)
select * from product_hierarchy
order by path
0
 

Author Comment

by:bongii
ID: 22768422
I got this error:

Msg 245, Level 16, State 1, Line 1
Conversion failed when converting the varchar value '.' to data type int.
0
 

Author Comment

by:bongii
ID: 22784897
There isen´t any solution to this?
0
 
LVL 37

Accepted Solution

by:
momi_sabag earned 500 total points
ID: 22784914
try this

with product_hierarchy as
(select id,parentid,1 lev , cast(id as varchar(max)) as path
from products where parentid is null
union all
select p.id,p.parentid,ph.lev+1 , ph.path+'.'+ cast(p.id as varchar(max)) as path
from products p
join product_hierarchy ph
on ph.id = p.parentid
)
select * from product_hierarchy
order by path
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you having speed problem in loading SQL Server Management Studio, try to uncheck these options in your internet browser (IE -> Internet Options / Advanced / Security):    . Check for publisher's certificate revocation    . Check for server ce…
INTRODUCTION: While tying your database objects into builds and your enterprise source control system takes a third-party product (like Visual Studio Database Edition or Red-Gate's SQL Source Control), you can achieve some protection using a sing…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question