Percentage of whole, upon a group

Is it possible to display a grouped column as a percentage of the whole? Say I have a table that has two fields:

  ACCESS_TYP     CHRG-------------------------     10          1.00     10          2.00     11         45.00     10          7.00     11          5.00

But I want to display it as:

  ACCESS_TYP     summary    percentage  whole----------------------------------------------     10           10.00       16.66      60.00     11           50.00       83.33      60.00 

The “whole” field isn’t necessary, but I figured it had to be in there to get the percentage.

I can build up a query like so:

SELECT access_typ,       (select sum(chrg_amt) from acctsum),       sum(chrg_amt) FROM   acctsum GROUP  BY ACCESS_TYP

but dividing the one sum by the big sum doesn’t seem to work.

To create a result set that contains both detail and summary information on the same line, you need to use what is termed a derived table. Basically, in the FROM clause you put the select statement that represents your summary information and provide it with a name. You can then join between your derived table and the detail information to provide the result set you need. Following is some sample code that illustrates the point.

create table #access(	type int,	charge float)insert into #access values (10,100)insert into #access values (11,100)insert into #access values (11,200)select c.type, c.charge, 'percentage' = round((charge/ * 100,2)from#access c, (select type,'total' = sum(charge) from #access group by type) as summarywherec.type = summary.typedrop table #access
Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS