Selecting data in SQL videos | SQL Queries Part 7 - Using Functions in Queries

Posted by Andrew Gould on 30 May 2012

Learn the basics of using functions in Microsoft SQL Server queries. This video teaches you how to use functions to create calculated columns in a query, including where to find a list of available functions, how to work out which parameters you need to fill in using the help system, and how to combine functions in more elaborate calculations.

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Making a  video bigger

You can increase the size of your video to make it fill the screen like this:

View full screen

Play your video (the icons shown won't appear until you do), then click on the full screen icon which appears as shown at its bottom right-hand corner.


When you've finished viewing a video in full screen mode, just press the Esc key to return to normal view.

Improving the quality of a video

To improve the quality of a video, first click on the Settings icon:

Settings icon

Make sure you're playing your video so that the icons shown appear, then click on this gear icon at the bottom right-hand corner.


Choose to change the video quality:

Video quality

Click on Quality as shown to bring up the submenu.


The higher the number you choose, the better will be your video quality (but the slower the connection speed):

Connection speed

Don't choose the HD option unless you have a fast enough connection speed to support it!


Is your Wise Owl speaking too slowly (or too quickly)?  You can also use the Settings menu above to change your playback speed.

This page has 2 threads Add post
27 Oct 17 at 16:01

Yes, thanks.



27 Oct 17 at 10:34

I have got a copy of the database the accompanies this SQL video.  When I expand Database Diagrams, I don't have anything.  Why is that?

27 Oct 17 at 15:25

For the very simple reason that you can't script the creation of a database diagram! Fortunately, we do have a video which includes a section on creating database diagrams which you can view here

I hope that helps!