VBA - working with data videos | Excel VBA Part 58.18 - SQL for Excel Files - Union Queries from Multiple Files

Posted by Andrew Gould on 22 June 2021

This video demonstrates how to use the IN clause (not to be confused with the IN operator!) in an ADODB SQL query to select data from multiple files in the same query. You'll learn how to union tables from multiple Excel workbooks, both with and without header rows. As a bonus, you'll also see how to union data from a CSV file.

See our full range of VBA training resources, or test your knowledge of VBA with one of our VBA skills assessment tests.

This video has the following accompanying files:

File name Type Description
Union Queries from Multiple Files.xlsm Excel workbook with macros The query code
Movies.xlsx Excel workbook The source data
Movies 2017.xlsx Excel workbook The source data
Movies 2018.xlsx Excel workbook The source data
Movies 2019.xlsx Excel workbook The source data
Movies 2020.csv CSV file The source data

Click to download a zipped copy of the above files.

There are no exercises for this video.

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 0 threads Add post