Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Training Power Query M Language - Automate Complex ETLs
Trusted by — schools, companies and industrial groups
25,651 programs · 25 countries
Every program built with a dedicated engineer
Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.
Learning objectives
- Master the advanced syntax of the M language for professional data transformations
- Develop certifiable custom functions in Power Query M Language
- Optimize enterprise ETL query performance with M
- Implement robust error handling and expert debugging in M
- Design scalable and reusable data pipelines
- Integrate Power Query M Language with Power BI and Excel for automated workflows
- Deploy M skills to accelerate enterprise data projects
Program
Module 1Expert Power Query M Language Syntax: Advanced Expressions and Native Structures (Table, List, Record)
Dive into complex M language expressions, manipulate Table and List to transform massive datasets, explore Record for dynamic hierarchies, perform exercises on real enterprise CSV/JSON files, create your first custom let-in functions, test live in Power Query Editor with immediate trainer feedback, produce a first reusable M script for daily BI reports.
Module 2Custom Power Query M Language Functions: Modularity and Reusability (Custom Functions, Recursion)
Design advanced M functions to automate repetitive cleanups, implement recursion on hierarchical data trees, integrate dynamic parameters for flexible pipelines, apply to real cases like multi-source sales deduplication, debug with Tracer and breakpoints, generate a shared functions library for your data team, measure time savings by comparing before/after on a red thread project.
Module 3Optimization and Performance in Power Query M Language: Scalable Queries (Buffering, Folding, Indexing)
Analyze Query Diagnostics to identify bottlenecks, apply Query Folding on SQL sources to delegate to the engine, use Table.Buffer and List.Buffer on large datasets, optimize joins and groupings with custom M indexes, test on 1M+ enterprise log lines, reduce execution times by 70% through practical exercises, document your optimizations for Power BI production deployment.
Module 4Error Handling and Integrations in Power Query M Language: Production Robustness (try/otherwise, APIs)
Master try/otherwise and Error.Record for resilient ETLs, integrate Web.Contents API calls with OAuth authentication, manage conditional multi-source flows, simulate failures on real enterprise data, deploy in Power BI Service with scheduled refresh, finalize the red thread project with a complete M pipeline, assess skills via expert code review and post-training action plan.
Evaluation method
- Advanced MCQ on M syntax and optimization at the end of the training
- Practical evaluation through development of custom functions
- Presentation of the red thread ETL pipeline with performance metrics
Learning method
- Courses led by an active expert data engineering trainer
- Practical exercises on authentic enterprise datasets
- Progressive red thread project over 4 days for immediate application
- Complete course materials and M scripts provided to each participant
Methods, materials and delivery
The Training Power Query M Language - Automate Complex ETLs program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
Equipment required
For the smooth delivery of the Training Power Query M Language - Automate Complex ETLs program, the following equipment is required:
- Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
- Training environments installed on workstations or accessible online
- Course materials, hands-on exercises and complementary resources
- Post-training access to materials and educational resources
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
* contact us for remote delivery feasibility** ratio varies depending on the program
Skills assessment methods
Assessment of skills acquired during the Training Power Query M Language - Automate Complex ETLs program is performed through:
- During training: case studies, hands-on labs and professional scenarios
- End of training: self-assessment questionnaire and skills evaluation by the trainer
- After training: completion certificate detailing acquired skills
Program accessibility
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Enrollment terms and lead times
Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.
The Learni story
Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.
Our method
Training quality, guaranteed at every step
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
You meet the trainer beforehand
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
- Live briefing on goals and team context.
- Veto right — we swap the trainer for free if needed.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
- Hands-on cases drawn from your stack and projects.
- Program co-written then validated by your team.
Continuous quality follow-up
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
- NPS, knowledge quizzes and skills self-assessment.
- Satisfaction guarantee: fully satisfied or free rework.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
Our social commitment
A school kit donated to a child for every training booked
To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.
- Backpack, notebooks and essential supplies
- Distributed through our partner charities
- Included, at no extra cost to you
FAQ
Frequently asked questions
Which tools are used in Power Query M Language training?+
Hands-on work runs on table, list, record, custom Functions, recursion and buffering. Those tools come from the Power Query M Language program itself, delivered on site over 4 days, so participants practise on the stack they will use at work.
What can participants do after Power Query M Language training?+
They can master the advanced syntax of the M language for professional data transformations, develop certifiable custom functions in Power Query M Language and optimize enterprise ETL query performance with M. Those are the stated objectives of the Power Query M Language program at Expert level, checked by the end-of-session assessment.
What does the Power Query M Language program cover, day by day?+
Day 1: Expert Power Query M Language Syntax: Advanced Expressions and Native Structures (Table, List, Record). Day 2: Custom Power Query M Language Functions: Modularity and Reusability (Custom Functions, Recursion). Day 3: Optimization and Performance in Power Query M Language: Scalable Queries (Buffering, Folding, Indexing). Day 4: Error Handling and Integrations in Power Query M Language: Production Robustness (try/otherwise, APIs). The Power Query M Language program runs over 4 days, delivered on site.
How is Power Query M Language training assessed?+
Assessment relies on advanced MCQ on M syntax and optimization at the end of the training, practical evaluation through development of custom functions and presentation of the red thread ETL pipeline with performance metrics. Learni issues a completion certificate together with the individual assessment report at the end of the Power Query M Language program, which an L&D team can file as evidence.
How much does Power Query M Language training cost per participant?+
Power Query M Language training is priced on quote. The amount depends on headcount, format and how far the syllabus is tailored to your team. A detailed quote is sent within one business day, and team pricing covers the whole group from the second participant.
How long does Power Query M Language training take?+
4 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Power Query M Language training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Power Query M Language training?+
Mastery of intermediate Power Query, advanced SQL, and basics of functional programming.
Is a certificate issued after Power Query M Language training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
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