The Wise Owl logo (an owl and the company name)

Our training courses
AI - Articial Intelligence Azure C# Excel Microsoft 365 MySQL Power Apps Power Automate Power BI and DAX Python Report Builder SQL SQL Server VBA Macros

Other training resources
Tips and tricks Guides and tutorials Blogs Exercises YouTube tutorials YouTube shorts Test your skills Consultancy Courseware Self-paced courses Newsletters Publications

Our training venues
London Manchester Across the UK At your site Online

Why we are different
Hundreds of published reviews Small class sizes Outstanding courseware Online classroom (Almost) no cancellations Wise Owl trainers only Genuine integrity Invoices after training 30+ years of Wise Owl Our top 100 clients

Writing M for Power Query Course (2 days)

Random Wise Owl trainer headshot
Andrew (one of our 7 Wise Owl trainers)

Find the right course for you

All UK prices exclude VAT

85 Google
5-star reviews

 

448 attributed
reviews

Topics covered on this course

Show all Hide all
  • Power Query Basics

    Subtopics

    1. Power Query in Power BI
    2. Power Query in Excel
    3. Creating basic queries
  • Writing M Code

    Subtopics

    1. The Advanced Editor
    2. The let expression
    3. Variables in M
    4. Order of statements
  • Working with Data

    Subtopics

    1. Values and data types
    2. Using built-in functions
    3. Lists, records and tables
  • Getting Data

    Subtopics

    1. Connecting to a source
    2. Extracting data
    3. Returning a table
  • Working with Columns

    Subtopics

    1. Removing and reordering
    2. Setting data types
    3. Splitting columns
  • Working with Rows

    Subtopics

    1. Skipping rows
    2. Dealing with header rows
    3. Applying filters
    4. Sorting data
  • Calculated Columns

    Subtopics

    1. Basic calculations
    2. Conditional columns
    3. Nested if expressions
  • Structuring Code

    Subtopics

    1. Dividing long queries
    2. Referring to queries
    3. Assigning queries to groups
  • Writing Functions

    Subtopics

    1. Nesting functions
    2. Creating separate functions
    3. Parameters and types
    4. Invoking functions
  • Error Handling

    Subtopics

    1. The try statement
    2. Raising errors
    3. Catching exceptions
  • Manipulating Tables

    Subtopics

    1. Grouping and aggregating
    2. Transposing
    3. Pivoting and unpivoting
  • Combining Data

    Subtopics

    1. Appending queries
    2. Merging queries
    3. Adding Keys
  • Parameters in Power BI  

    Subtopics

    1. Creating parameters
    2. Referencing parameters
    3. Dropdown parameters

Topics marked will be covered if time allows.

PDF summary of this course (contents, dates and prices)

Note that this is a new course, which means our usual no-cancel guarantee does not apply to all bookings.

Why Choose Us?

Here are some reasons to choose Wise Owl courses:

In addition, here are some benefits unique to classroom training:

And some benefits specific to online training:

  • Courseware posted to you in advance
  • Separate pre-course check-up included
  • Our clever Wordsworth system means you can use our laptops (and we can see them)

We've been in business over 30 years - we must be doing something right!

Writing M for Power Query course dates

The table below lists the Writing M for Power Query courses that we currently have scheduled (click on one of the tabs to filter the list).

If you can't see the course you want listed, don't despair! If you can muster 3 or 4 people together, it may well be worth organising an onsite course at your office (we'll provide and set up the computers), or else an online course tailored to your needs.

Date(s) Date(s) Duration Venue Price UK times  
Thu/Fri 15-16 January 2026 15-16 Jan 2 days Online £995.00 + VAT 09:30-16:30 Book
Thu/Fri 19-20 February 2026 19-20 Feb 2 days Online £995.00 + VAT 09:30-16:30 Book
Thu/Fri 19-20 March 2026 19-20 Mar 2 days Online £995.00 + VAT 09:30-16:30 Book
Thu/Fri 16-17 April 2026 16-17 Apr 2 days Online £995.00 + VAT 09:30-16:30 Book

Show these times in your country and time zone.

Note that this is a new course, so not all the dates shown above are guaranteed to run (you can see more details here ).

We don't currently have any Writing M for Power Query courses scheduled in our London training centre. We may consider adding dates - it's always worth asking.

Alternatively, if you have a handful of like-minded people in your organisation, you could consider booking your own bespoke Writing M for Power Query course, whereby you get to pick the dates, training delivery method and venue!

We don't currently have any Writing M for Power Query courses scheduled in our Manchester training centre. We may consider adding dates - it's always worth asking.

Alternatively, if you have a handful of like-minded people in your organisation, you could consider booking your own bespoke Writing M for Power Query course, whereby you get to pick the dates, training delivery method and venue!

If you can't see the course you want listed, don't despair! If you can muster 3 or 4 people together, it may well be worth organising an onsite course at your office (we'll provide and set up the computers), or else an online course tailored to your needs.

Date(s) Date(s) Duration Venue Price UK times  
Thu/Fri 15-16 January 2026 15-16 Jan 2 days Online £995.00 + VAT 09:30-16:30 Book
Thu/Fri 19-20 February 2026 19-20 Feb 2 days Online £995.00 + VAT 09:30-16:30 Book
Thu/Fri 19-20 March 2026 19-20 Mar 2 days Online £995.00 + VAT 09:30-16:30 Book
Thu/Fri 16-17 April 2026 16-17 Apr 2 days Online £995.00 + VAT 09:30-16:30 Book

Show these times in your country and time zone.

Note that this is a new course, so not all the dates shown above are guaranteed to run (you can see more details here ).

About half of our courses are created bespoke for a single organisation, and either delivered onsite (usually somewhere in the UK, but we're willing to travel!) or online. For onsite courses we will usually provide and set up the necessary computers free of charge.

There are four main reasons why you might want to book tailored training like this:

  1. If you have 3 or more people, organising custom training will probably be cheaper than booking people individually onto a scheduled course.
  2. You'll be able to choose the content of any training, and be able to pause it for discussions on how you'll use software internally, or ask to take digressions.
  3. You may not be able to travel to our venues, so it might be easier to ask us to travel to you.
  4. You may not be able to make the dates of our published scheduled courses, and want to be able to choose when your training takes place.

If you'd like a quote for how much a tailored course would cost please let us know what you'd like to achieve and we'll get back to you (normally within half a working day).

What other people have said about our Power BI training

Here are some comments we've received about our Power BI training . You can see all of our 448 reviews here. We would like to sincerely thank the clients whose names are shown below for kindly agreeing to let us share their feedback.

"Really enjoyed the course, it had so so many examples that are going to be really easy to refer back to. I enjoyed breaking things down to the understanding of why something works, thanks!"

Holly Fry

The Phoenix Group

"Thoroughly enjoyed this course and the trainer was absolutely fantastic."

Abbie Edwards

Grosvenor Food & AgTech

"The trainer was amazing, content was spot on and I benefited much more than expected from the course. Very well presented, communication skills and flexibility with content was appreciated."

Samantha Bangs

Welcome Break

"The trainer was really engaging and paced the content well."

Ian Getty

Torus62 Ltd

"Absolutely the best tutor I've had in any capacity thus far. Very charismatic and great jokes to keep the class awake and going, through an intense program. Keeping an eye on our screens so he's able to help if anyone has an issue - couldn't ask for better."

Ramzi Tallaa

PwC

"I found the course very informative, the trainer was helpful and knowledgeable. The course manual is a great resource to enable us to apply the skills learnt after the course. A colleague recommended the course."

Kay Jackman

Mitsubishi Electric UK

About this Writing M for Power Query course

Click on one of the tabs below to see the given information about the course.

If you’ve imported data in a Power BI report or Excel workbook, you may have used Power Query to tidy up your data. You can perform many transformations using Power Query’s menus but what if you want to go beyond the basics? This course teaches you how to write queries from scratch using the Power Query M formula language, or just M to its friends.

Pre-requisites

To attend this course you should be familiar with the concepts of extracting, transforming and loading data.

What you'll need to bring

If you book on a classroom course, the only thing you need to bring to the course is ... yourself! We even provide a notepad and a suprisingly nice pen for you to take notes with.

For online training you'll need two things:

  1. A good internet connection (otherwise you'll have a frustrating time); and
  2. A second screen (a requirement, not a nice-to-have!)

You can see full details of our online course requirements here.

For classroom training, you won't need a computer - we (obviously) will provide that. However, you're welcome to use your own laptop if you prefer, providing that you have the correct software installed.

For online training you will need a computer, but you won't need to have any software installed.  This is because you'll use Windows Remote Desktop to connect to our computers using our whizzy Wordsworth online training system, and these computers will have all of the necessary files and software installed.

When you book a place

If you book a place on one of our courses:

  • For classroom courses we will send out a joining email. That's it!
  • For online courses we will get in touch to organise a half-hour pre-course check to iron out any connection problems before the course (rather than during it). We will also ask you whether you want to receive a printed copy of the course manual (and post this to you if you do).

Whatever type of course you book, we will also send you out a reminder a few days before the course is due to take place - not that (we hope) you'll have forgotten!

After the course

After the course finishes you'll receive a digital certificate proving your attendance (we will gladly send a paper copy on request also).

We don't have any formal arrangement for answering questions after the course, but if you get stuck on something and email your trainer they should (and nearly always do!) respond as quickly as their training schedule allows.

FAQs (Frequently Asked Questions)

Click on any heading below to learn more!

Hidden
Hidden

What other Power BI courses can I take?▼

Here is a list of all of the Power BI courses that we run:

Course name Days
Introduction to Power BI 2 days
Advanced Power BI Reports 2 days
Advanced Power BI Data 2 days
Writing M for Power Query (this course) 2 days
DAX for Power BI 2 days
Fast track Power BI 3 days
Fast track Power BI and DAX 3 days

What courses do you have related to this one?▼

You might like to consider invesigating these related courses:

Related course Days Level
Advanced Power BI Data 2 days Intermediate or advanced

What are your venues for your classroom Power BI courses?▼

We run our scheduled classroom training courses in the following venues:

Venue Details
Power BI training in London We run our courses in London from the LandMark offices in Bishopsgate, right in the middle of the City (and close to Liverpool Street mainline station).
Power BI training in Manchester We run our courses in Manchester from the Holiday Inn business centre, which is a few minutes' walk from Piccadilly station.
This page has 0 threads Add a new post

Head office

Kingsmoor House

Railway Street

GLOSSOP

SK13 2AA

London

Landmark Offices

99 Bishopsgate

LONDON

EC2M 3XD

Manchester

Holiday Inn

25 Aytoun Street

MANCHESTER

M1 3AE
Google reviews star logo

© Wise Owl Business Solutions Ltd 2025. All Rights Reserved.

End of small page here
Please be aware that our website uses cookies!
I'm OK with this Tell me more ...