?
Solved

Percentages in SQL Server 2005

Posted on 2014-12-22
3
Medium Priority
?
110 Views
Last Modified: 2014-12-22
Hi,

I have a table with fields ProdGroup, ProdNo.
I would like to be able to select the Percentage of products that are in each group by specifying that group
Both fields are of datatype INT

Any help would be appreciated.
0
Comment
Question by:Morpheus7
  • 2
3 Comments
 
LVL 11

Expert Comment

by:Ray
ID: 40513205
you want to do this for everything in the table or only a specific ProdGroup or ProdGroups at a time?

Anything more you can share about the table structure (columns)?
0
 

Author Comment

by:Morpheus7
ID: 40513246
Hi,

I would like to be able to specify one or two prodGroups at a time. The other fields in the table are productID which is the PK. The others are just descriptive.
There are over one hundred prodGroups.
Thanks
0
 
LVL 11

Accepted Solution

by:
Ray earned 2000 total points
ID: 40513308
This should do the trick.
Since I'm not sure if your table could have millions of rows or not, I opted for a 'faster' counting method for finding the total number of rows in the table.  Note that the % for each group will be the % of the total rows (prodNos), not the % of the limited group.  IF that is a problem, then there will need to be a change.


SELECT ProdGroup, cast(count(*) AS DECIMAL(18, 3)) / (
            SELECT SUM(row_count)
            FROM sys.dm_db_partition_stats
            WHERE object_id = OBJECT_ID('TABLENAME') AND (index_id = 0 OR index_id = 1)
            ) AS 'PercentageOfGroup'
FROM TABLENAME
WHERE ProdGroup in ('group1', 'group2', 'group3')
GROUP BY ProdGroup
0

Featured Post

What Kind of Coding Program is Right for You?

There are many ways to learn to code these days. From coding bootcamps like Flatiron School to online courses to totally free beginner resources. The best way to learn to code depends on many factors, but the most important one is you. See what course is best for you.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

When trying to connect from SSMS v17.x to a SQL Server Integration Services 2016 instance or previous version, you get the error “Connecting to the Integration Services service on the computer failed with the following error: 'The specified service …
One of the most important things in an application is the query performance. This article intends to give you good tips to improve the performance of your queries.
Via a live example, show how to extract information from SQL Server on Database, Connection and Server properties
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

589 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