Q

# SUMs from either of two columns

I have a table with four fields: TeamHost, TeamAway, PointsHost, PointsAway. A sample of such data are teams from...

Bundesliga:

```TeamHost   TeamAway   PointsHost PointsAway
Stuttgart  Dortmund       3          0
Dortmund   Stuttgart      1          1```

I want to produce a query that can display the fields Team, TotalPoints like:

```Team       Totalpoints
Stuttgart      4
Dortmund       1```

It's easy to obtain separate home and away totals for each team based on whether the team is TeamHost or TeamAway. The following two queries will accomplish this:

```select TeamHost   as Team
, Sum(PointsHost) as SubTotal
from matches
group by TeamHost```
```select TeamAway   as Team
, Sum(PointsAway) as SubTotal
from matches
group by TeamAway```

Now all we need to do is add these two subtotals together.

```select Team
, sum(SubTotal) as Totalpoints
from (
select TeamHost   as Team
, Sum(PointsHost) as SubTotal
from matches
group by TeamHost
union all
select TeamAway   as Team
, Sum(PointsAway) as SubTotal
from matches
group by TeamAway
) as U
group by Team ```

The outer SELECT combines the two subtotals into one total for each team.

Alternatively, we could have used a JOIN here instead, because there is only one row per subtotal per team.

```select H.Team
, H.SubTotal
+A.SubTotal as Totalpoints
from (
select TeamHost   as Team
, Sum(PointsHost) as SubTotal
from matches
group by TeamHost
) as H
inner
join (
select TeamAway   as Team
, Sum(PointsAway) as SubTotal
from matches
group by TeamAway
) as A
on H.Team = A.Team```

My preference, however, is for the UNION. It seems to me to be a more natural approach to this type of problem.

This was last published in February 2005

## Content

Find more PRO+ content and other member only offers, here.

#### Have a question for an expert?

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

#### Start the conversation

Send me notifications when other members comment.

## SearchDataManagement

• ### With better scaling, semantic technology knocks on enterprise's door

Cambridge Semantics CTO Sean Martin says better scalability can lead to richer representations of data. Such advances are behind ...

• ### Big data management and analytics weather tumult -- with more in store

Cloud had a big impact on big data management and analytics last year. Machine learning and streaming designs will contribute to ...

• ### Embedded analytics to feel widest impact of machine learning projects

Ovum analyst Tony Baer discusses machine learning tools, IoT-driven streaming analytics and Hadoop in the cloud, all of which ...

• ### Cognitive computing applications present new business challenges

When implementing cognitive software, enterprises need to worry just as much -- if not more -- about the business implications, ...

• ### Researchers work on AI algorithms to detect fake news

A new challenge to identify fake news will test the boundaries of AI technology and offer a proving ground for innovative new ...

• ### Don't let a data-driven approach ax judgment from analytics equation

Data analytics can help improve decision-making in organizations. But human intuition and judgment need to be part of the picture...

## SearchSAP

• ### SAP HANA, express edition makes HANA easier for non-SAP developers

Relaxed RAM and licensing requirements and the ability to run on local machines could help popularize the HANA in-memory platform...

• ### SAP futurists name five future technology trends to plan for now

Three SAP futurists explain what future technology trends in augmented reality, blockchain, AI, robotics, and contingent labor ...

• ### Abakus acquisition beefs up SAP Hybris marketing portfolio

SAP acquires Abakus marketing measurement software for SAP Hybris marketing suite; openSAP adds new courses for S/4HANA, data ...

## SearchSQLServer

• ### Four trends that will impact SQL Server DBAs in 2017

Flash storage adoption, cloud computing's growth, Linux's increased importance and broader big data integration are a few trends ...

• ### DATEADD and DATEDIFF SQL functions for datetime values

DATEADD and DATEDIFF SQL functions allow you to easily perform calculations, like adding a time interval from a datetime value. ...

• ### SQL Server on Linux signals Microsoft's changing development landscape

Expert Joey D'Antoni explains what SQL Server on Linux and the addition of some Enterprise Edition features to the database's ...

## TheServerSide

• ### Is JSON and XML your REST performance bottleneck?

Learn how ASCII encoding formats like JSON and REST can adversely impact server application performance compared with emerging ...

• ### Making multi-cloud deployment a reality at Netflix with Spinnaker

Learn how Netflix leveraged automation and Spinnaker to perform 4,000 multi-cloud deployments per day.

• ### The benefits of Java microservices in a Docker and DevOps world

To seasoned developers, microservices may sound like SOA by another name. But Java microservices apps delivered via Docker ...

## SearchDataCenter

• ### What should my dimensions be for a data center building design?

Don't get hung up on data center dimensions in the design phase. Focus on length-to-width ratios to get the most out of data ...

• ### Use a Linux file system journal for data integrity, performance

Understand the three different file system journaling modes for Linux, as well as which mount option provides the best levels of ...

• ### Test yourself on modern data center networking architecture

Evolving business needs demand a new approach to data center networking. Keep yourself updated on SDN, VXLAN and other ...

## SearchContentManagement

• ### Using Microsoft MyAnalytics to improve workers' time management

Microsoft MyAnalytics has been hailed as the next great thing for analyzing worker productivity. But how can employees be assured...

• ### Is the Drupal content management system right for your business?

The open source Drupal content management system offers users responsive design and WYSIWYG content and web development tools, as...

• ### Manage your content with the IBM Digital Experience WCM platform

IBM Digital Experience is a WCM platform that offers users features for creating and managing digital content that can be ...

## SearchFinancialApplications

• ### Group-chat software sees explosive growth and intense competition

Microsoft Teams and Workplace by Facebook are facing off against rivals such as HipChat and Slack in a high-stakes competition ...

• ### HR to face sea change in online learning software and accent on teams

Deloitte predicts far-reaching trends for HR, including innovations in learning, an expansion of artificial intelligence, and an ...

• ### Experts lack consensus on discrimination risks of video interviewing

When used too early in the hiring process, video can lead to discrimination based on race, age or sex, but it can have positive ...

Close