Solved

Make row counter in query

Posted on 2001-09-03
11
452 Views
Last Modified: 2008-02-01
Hello!

How can i do row counter in query like that.

select id from table1
and output will be:

counter  id
  1       4
  2       9
  3       20
  4       21
  5       50
 ........

thank you!
0
Comment
Question by:kaspiton
  • 4
  • 2
  • 2
  • +3
11 Comments
 
LVL 1

Expert Comment

by:george74
ID: 6450236
hi,

there is one way you could do this, but it requires you to deal with another table. The following example creates your table one (that you already have), than selects it's values into a new temporary table together with an identity column (used for rowcount).
Hope this helps.

Cheers,
George

set nocount on
create table table1(id int)
declare @i int
set @i = 10
while @i > 0 begin
     insert into table1 select @i
     set @i  = @i - 1
end

select identity(int, 1, 1) as rix, * into #table2 from table1         -- this is the line you need for having the incremented values
select * from #table2

drop table table1
drop table #table2
0
 
LVL 18

Expert Comment

by:nigelrivett
ID: 6450316
select counter = (count(*) from table1 t1 where t1.id < table1.id) + 1 ,
id
from table1
order by id
0
 

Author Comment

by:kaspiton
ID: 6450325
Can i do this without sub queries?
0
 
LVL 69

Accepted Solution

by:
Éric Moreau earned 70 total points
ID: 6450522
I found an article that may interest you: "INF: How to Dynamically Number Rows in a Select Statement"
at http://support.microsoft.com/support/kb/articles/q186/1/33.asp 
0
 
LVL 18

Expert Comment

by:nigelrivett
ID: 6450609
Don't see how.
You need to get the data to display from the table and also the number of records in front of it - don't see how you can get that without another copy of the table.

Can join the table to intself but that's not much different from the subquery.
0
Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

 
LVL 3

Expert Comment

by:ibro
ID: 6450673
The method nigel suggests will be very slow for a big queries. By big I mean queries that involve tables with large number of records. However it will be suitable for small result-sets. If you involve tables with a large number of records, better use george74's method with temporary table. It will give you best performance.
0
 
LVL 69

Expert Comment

by:Éric Moreau
ID: 6466105
Please maintain:

Questions Asked 24
Last 10 Grades Given A A A A A A A A A A  
Question Grading Record 20 Answers Graded / 20 Answers Received
0
 
LVL 69

Expert Comment

by:Éric Moreau
ID: 6498613
I am sure that my solution is the best.
0
 
LVL 3

Expert Comment

by:ibro
ID: 6499020
that was very modest :-)
0
 
LVL 69

Expert Comment

by:Éric Moreau
ID: 6521913
kaspiton, can you comment or close the question ?
0
 

Expert Comment

by:Dafvid
ID: 7332733
The "INF: How to Dynamically Number Rows in a Select Statement" KB entry link is broken. This one is correct http://support.microsoft.com/default.aspx?scid=kb;en-us;Q186133 for future reference.
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Sql server Transfering records getting error #NAME? 6 39
SQL Select - Help with CASE 4 42
Time Duration able to handle overflow of 24+ hours 5 39
SQL Server Question 5 25
Nowadays, some of developer are too much worried about data. Who is using data, who is updating it etc. etc. Because, data is more costlier in term of money and information. So security of data is focusing concern in days. Lets' understand the Au…
This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
This videos aims to give the viewer a basic demonstration of how a user can query current session information by using the SYS_CONTEXT function
Viewers will learn how to use the UPDATE and DELETE statements to change or remove existing data from their tables. Make a table: Update a specific column given a specific row using the UPDATE statement: Remove a set of values using the DELETE s…

911 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

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now