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Power BI DAX Training Course
Learn the fundamentals of DAX on our One-Day Course
Learn the fundamentals of DAX on our One-Day Course
Power BI is a powerful tool. Users can achieve quite a lot without much DAX knowledge but to take your skills and modelling ability to the next level, fundamental understanding of the DAX language is key. Our one-day course will introduce key concepts and work through exercises so students leave with a clearer picture of how to write DAX. You will learn:
- To write DAX functions and understand expressions
- use tools to help manage and create DAX
- create complex expressions
- learn methods to optimise expressions and more
Course Details
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DA-100 Power BI Certification
Join remotely from Singapore, attend Nexacu Power BI training courses and prepare to sit the DA-100 exam to achieve your Power BI certification.
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Power BI DAX Course Content
- Course Introduction
- What is DAX
- DAX Functions
- DAX Contexts
- What is Vertipaq
- DAX efficiency
- DAX references
- DAX best practices
- Recap of Contexts
- Introduction to Contexts
- Recap of DAX Contexts
- The Row Context
- The Filter Context
- Measures and Calculated Columns
- Dataset for exercises – Computer Store sales
- Filter and Row Context in a measure
- The CALCULATE function
- Context Transition
- Filter Expressions of CALCULATE
- Rules of Evaluation
- CALCULATE and FILTER
- Contexts in Calculated Columns
- Introduction to Columns
- Row Context in Calculated Columns
- Filter Context in Calculated Columns
- Relationships in Row Contexts
- The RELATED function
- The RELATEDTABLE function
- Using RELATEDTABLE in a column
- CALCULATED in row contexts
- Row to Filter Context
- Transformation Whiteboard
- Exercise on row to filter contexts
- Duplicates in the transformation
- The LOOKUPVALUE function
- Row Contexts in Measures
- Introduction to Row Contexts
- Row Contexts in Measures
- Simple iterator in a measure
- Row Context and a related table
- Some more calculations exercise
- Re-using measures
- Implicit CALCULATE in a measure
- An alternative approach using variables
- Functions and FILTER
- Introduction to DAX functions
- Time Intelligence functions
- Date (Dimension) tables
- Using in-built TOTALYTD
- Date modifier functions
- Using date modifier DATESBETWEEN
- Using date modifier DATESYTD
- The magic behind Date Table functions
- The case for simplicity – MAX or LASTDATE
- Understanding the FILTER function
- Contexts in the FILTER function
- The filter context in functions
- Naked column references
- Simple filter expression
- Comparing a value in the filter context
- Adding another filter condition
- The value of VALUES
- Table Functions
- Introduction to Table functions
- Summarising tables
- Using SUMMARIZE alone
- The problem with SUMMARIZE
- Using ADDCOLUMNS and SUMMARIZE
- Using SUMMARIZECOLUMNS as a better alternative
- A summary table in a measure
- Practical DAX
- Introduction to DAX calculations
- Comparing functions – min/max and time intelligence
- Debugging with DAX
- Alternative patterns
- The Quick Measure version
- The KEEPFILTERS function
- The TREATAS function
- A few ORs or TREATAS
- Using TREATAS and KEEPFILTERS
- Using TREATAS for virtual relationships
- DAX Tools
- Use of third party tools
- Introducing DAX Studio
- What is DAX Studio
- Download and Install DAX Studio
- The DAX Studio Interface
- How DAX Studio connects to the data
- Viewing data model information
- Creating a table query
- Ordering a query result
- A query returning a scalar
- Defining a Measure
- Declaring a variable
- Incoming filter context
- DAX Performance
- Introduction to DAX Performance
- The basics of the Vertipaq engine
- Where is Vertipaq
- A database of columns
- Compression of a column
- Identifying column compression
- Understanding the TABLE_ID column
- Power Query data statistics
- Data Model Normalisation
- Introduction to the Query Plan
- Overview of the engines
- The Formula Engine
- The Storage Engine
- Capturing a query
- Special process to capture Power BI queries
- Re-loading Power BI visuals
- Understanding the query information from the capture
- DAX Optimisation
- Introduction to optimising DAX
- Clear the Cache
- Server Timings
- Explaining the Server Timings
- Steps to improve performance
- Redefine a measure
- The datacache
- Optimisation by the Vertipaq engine
- The CallBackDataID function
- Reducing CallBackDataID instances
- Optimising a Query in the Storage Engine
- Viewing the Query Plan
- Comparing two statistical functions
- Extended Topics:
- Table Joins
- Introduction to Table Joins
- The Inner Join
- A join on unrelated tables – TREATAS
- The Outer Join
- The Cross Join Using
- GENERATE for Joins
- Nested Row Context
- Introduction to Nested Rows
- How Nested Rows work
- The EARLIER function
- The EARLIEST function
- Create a nested row in a column
- How to avoid complex nesting expressions
- Using variables to store values before nesting
- Avoid iterators where possible
- Further improve the efficiency of an expression
- Ranking
- Introduction to Ranking
- Arguments in RANKX
- Create a calculated column for ranking
- Sort order of ranking
- Definitions when ranking ties
- Breaking Ties Manually
- Creating a measure for ranking
- Adjustments to make the RANKX measure work
Common questions
What is Remote Training?
Remote training at Nexacu, means our team of experienced trainers will deliver your training virtually. With remote learning students can access our usual classroom training courses via video conferencing, ask questions, participate in discussion and share their screen with the trainer if they need help at any point in the course. Students have the same level of participation and access to the trainer as they would in classroom training sessions.
Which courses are available remotely?
All of our Public Courses scheduled in across South East Asia and New Zealand are available to be delivered remotely. Book any course and you will receive login details to access our student portal. The Student portal contains all our your course information, instructions on getting set up for a remote class and free webinars.
What is Power BI?
Power BI is Microsoft's Data Visualization tool. The BI stands for Business Intelligence. Power BI enables users to connect with their data, cleanse it and build interactive dashboards to gain insights that drive actions.
Will the content in these Power BI Courses be relevant for the workplace?
Yes, our course writers and trainers have industry backgrounds. Our core principle is to deliver training that our students can not only use in the workplace but will actually drive increased efficiency and productivity gains. We teach the key elements of Power BI from Beginner to Advanced; starting with a focus on visualizations and quickly progressing to data manipulation and modelling. We also offer a DAX course.
How many students are typically in a Power BI Training Course?
While this varies from session to session, we typically have 5-8 students in our Power BI classes. We cap our classes at 10 students. This is to ensure the quality of training remains high and that all students can ask questions and engage in discussion.
