SQLBI Newsletter #311

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NEW BLOG POST

What happened in the DAX world in 2025

Check out the DAX and SQLBI news of 2025 and an outlook on 2026:

DAX user-defined functions (UDF)
Calendar-based time intelligence
Mastering DAX Guide 3rd edition
SQLBI+ content
DAX Lib
DAX Optimizer Basic (free!)

... and more!

COMICS

AI BI Blunders

This comic has been generated by AI using so many prompts...

#311 · Dec 2025

LEARNING

Course calendar

Mastering DAX - 3 DAYS

	Feb 18-20 - Phoenix
	Mar 3-5 - Amsterdam
	Mar 30-Apr 1 - Houston
	Apr 8-10 - New York City
	May 5-7 - Copenhagen
	May 27-29 - Baltimore
	Jun 10-12 - Zürich
	Jun 15-17 - Berlin
	Jun 30-Jul 2 - Amsterdam

DATA MODELING - 3 DAYS

	Jul 21-23 - Amsterdam

video courses

	Mastering Tabular
	Intro to Data Modeling
	Data Modeling for Power BI
	Power BI Dashboard Design
	DAX Tools
	Introducing DAX
	Mastering DAX
	Optimizing DAX
	DAX Patterns

BI-WEEKLY NEWS DIGEST

Latest news

	• DaxLib.SVG compound function performance Are there performance penalties creating SVG with DAX and user-defined functions? It depends! But knowledge is power, so you cannot miss this analysis of performance in the DaxLib.SVG library. Dec 23, 2025 · Jake Duddy
	• Power BI Copilot and report filters and slicers You users will appreciate Copilot in Power BI if you spend enough time to prepare your model and report for Copilot. When will stewards and hostesses be included in the package? Dec 14, 2025 · Chris Webb

SQLBI YOUTUBE CHANNEL

Latest videos

Measuring the impact of promotions on sales in Power BI

29:39

#article

Marco Russo

Introducing DAX Lib

06:22

#announcement

Marco Russo

Using RANK instead of RANKX in DAX

23:33

#article

Alberto Ferrari

Introducing DAX Optimizer Basic

07:30

#daxoptimizer

Marco Russo

Dynamic pricing model for aircraft seat sales with Synoptic Panel and Power BI

06:26

#customvisual

Marco Russo

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