?
Solved

Creating Order Numbering Sequence such as 1.1, 2, 2.1, 2.2 using SQL Server CTE

Posted on 2011-03-17
6
Medium Priority
?
388 Views
Last Modified: 2012-05-11
I am trying to create a numbering sequence (1, 1.1, 1.2, 2, 2.1, 2.2, etc.) using CTE in SQL.  I am having so many issues, please help.  Below is my script:

with rs as(
select id, parentid, id [root], title, projectid,
      1 as lvl, id as sort_key
from folder
where parentid is null

union all

select c.id, c.parentid, p.[root], c.title, c.projectid, p.lvl + 1,
      p.lvl & '.' & p.sort_key as step
from rs  p
inner join folder c on p.id = c.parentid
)
select *
from rs
where projectid = 597
order by [root]
0
Comment
Question by:vnewman29
[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
  • 2
6 Comments
 
LVL 60

Accepted Solution

by:
Kevin Cross earned 2000 total points
ID: 35156865
Hi.

Instead of :
p.lvl & '.' & p.sort_key as step

Open in new window


I might try something like:
p.sort_key + '.' + convert(varchar(10), row_number() over(partition by p.id order by c.id)) as step

Open in new window


Hope that helps.

Kevin
0
 

Author Comment

by:vnewman29
ID: 35156913
That didn't work.  I am getting "Conversion failed when converting the varchar value '.' to data type int.
0
 
LVL 18

Expert Comment

by:deighton
ID: 35157405
how does that work exactly?

1 is a base, then it will contain  1.1 and 1.2
what determines the numbers you use, for example how do you know it will be 1.1 and 1.2 (which fields determine this)

could you give us your table structure, some sample data and a quick explanation?
0
Percona Live Europe 2017 | Sep 25 - 27, 2017

The Percona Live Open Source Database Conference Europe 2017 is the premier event for the diverse and active European open source database community, as well as businesses that develop and use open source database software.

 

Author Comment

by:vnewman29
ID: 35157593
The attached image shows the data.  The root field is the main group (1,2,3, ect.) and the parentid is the level and then the id.

For example the 1st group from the image should show as this:

Distribution/Instruction Memoranda 1.0
*_/_/2010 Execution Instruction 1.1
*_/_/2010 Distribution Email 1.2
*Fannie Mae Approvals 1.3
*12/22/2010 Approval 1.4
Transaction Documents 2.0
Untitled.jpg
0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 35157787
That means your id column is INT.  From your original code, I figured you already had that as VARCHAR.  In order for this to work, you will need to convert the ID column to VARCHAR in the anchor query.

i.e., CONVERT(VARCHAR(10), id) as sort_key
0
 
LVL 18

Expert Comment

by:deighton
ID: 35157899
where does the '2' of Transaction Documents derive from?
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

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

Slowly Changing Dimension Transformation component in data task flow is very useful for us to manage and control how data changes in SSIS.
The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
Familiarize people with the process of utilizing SQL Server functions from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Ac…
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.
Suggested Courses

764 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