Solved

SQL Percentage

Posted on 2012-04-12
5
273 Views
Last Modified: 2012-04-12
Hi Experts,
I use the query below to display the total number of different topics from my table on a pie chart .
Select COUNT(*) as [Count], Topic FROM [myDatabase].[dbo].[myTable] group by Topic

I would like to display the percentage instead of the count. How could I achieve that?
Thanks for your help.
0
Comment
Question by:baxtalo
5 Comments
 
LVL 13

Accepted Solution

by:
Ashok earned 250 total points
ID: 37837675
Try

DECLARE @Totals As Int;
set @Totals  = (select Count(*) As Cnt from [myDatabase].[dbo].[myTable]);
Select COUNT(*) as [Count], Topic, (100.0*COUNT(*)/@Totals)/100.0 As Percentage
from FROM [myDatabase].[dbo].[myTable] group by Topic;

HTH
Ashok
0
 
LVL 40

Assisted Solution

by:Kyle Abrahams
Kyle Abrahams earned 250 total points
ID: 37837681
declare @total int
set @total = (select count(*) from [myDatabase].[dbo].[myTable])

if @total > 0
select topic, cast(COUNT(topic) as [Count] as numeric(10,2))/ @total as percentage
FROM [myDatabase].[dbo].[myTable] group by Topic
else
select 'No Topics Found', 0
0
 
LVL 2

Expert Comment

by:Mohamed_allabakash
ID: 37837696
You can try this...

Select (COUNT(*)/100)*100 as [Count], Topic FROM [myDatabase].[dbo].[myTable] group by Topic
0
 

Author Closing Comment

by:baxtalo
ID: 37838391
Thank you very much, your comments helped. After trying everything possible I settled with this one:

      declare @total decimal

      select @total = COUNT(*)
      FROM [myDatabase].[dbo].[myTable]

      Select COUNT(*) as [Count], cast(COUNT(*)/@total*100 as numeric(10,0)) as [Percentage], Topic
      FROM [myDatabase].[dbo].[myTable]
      group by Letter
0
 
LVL 40

Expert Comment

by:Kyle Abrahams
ID: 37838436
You may want to include that if statement as you have a potentional divide by zero error if MyTable has no rows.
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
ASP.net VB.net Errors when sending data to SQL 5 20
ASP.NET gridview select textbox on focus 2 37
IIS redirect 1 68
insert value of checklistbox checked 4 27
IntroductionWhile developing web applications, a single page might contain many regions and each region might contain many number of controls with the capability to perform  postback. Many times you might need to perform some action on an ASP.NET po…
Problem Hi all,    While many today have fast Internet connection, there are many still who do not, or are connecting through devices with a slower connect, so light web pages and fast load times are still popular.    If your ASP.NET page …
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

803 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