Is the training Qualiopi certified?

Yes, Learni is a Qualiopi-certified training organization. This certification guarantees the quality of our courses and enables funding through OPCO and other mechanisms.

How can I fund my training?

Our courses are eligible for OPCO funding. Learni supports you through the funding process. A personalized quote is available upon request.

What are the prerequisites for this training?

The prerequisites for the Training Power Query M Language - Automate Complex ETLs training are: Mastery of intermediate Power Query, advanced SQL, and basics of functional programming. A preliminary interview validates your eligibility.

Is the training available in person?

Yes, the Training Power Query M Language - Automate Complex ETLs training is available in distanciel. The format can be adapted to your needs (inter, intra, custom).

Training Power Query M Language - Automate… | Learni

The story of Learni

Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.

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Methods, approaches, and teaching resources

The Training Power Query M Language - Automate Complex ETLs training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.

The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.

Teaching resources provided

To ensure the quality of the Training Power Query M Language - Automate Complex ETLs training, Learni provides the following teaching resources:

Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, video projector or interactive touchscreen (for remote sessions)
Training environments installed on workstations or accessible online
Course materials, practical exercises, and supplementary resources
Post-training access to materials and teaching resources

For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.

* contact us for remote feasibility** ratio varies depending on the training followed

Assessment methods

The assessment of skills acquired during the Training Power Query M Language - Automate Complex ETLs training is carried out through:

During training: case studies, practical exercises, and professional scenarios
At the end of training: self-assessment questionnaire and skills evaluation by the trainer
After training: training completion certificate detailing acquired skills

Training accessibility

Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.

Training 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

Training 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.