Definitive Guide to DAX, The: Business intelligence with Microsoft Excel, SQL Server Analysis Services, and Power BI (Business Skills) Paperback – 13 Oct. 2015

This book has taught me a huge amount about DAX in a fortnight, but I need to read some chapters again intensively to pick it up fully. The book does warn of this. DAX is probably more like SQL than a OO language, and yet knowing SQL won't get you into the syntax, only the mindset.The stuff towards the back of the book on how DAX models are stored internally, and column based databases, is extremely valuable. Now I realise that I can round some of my numeric data to 3dp to get much faster results. This is totally non-obvious without this background information.

This book is amazing. It gives you full approach to building calculations in DAX and data model optimization. It covers all needed dax expressions in several examples. Full recommendation!

Very comprehensive reference to DAX. Its cover on time intelligence is very practical and comprehensive. However, I wouldn't recommend this book to DAX beginners, for whom DAXercises by Matt Allington is a better option.

This is a book that will be useful for many years and will probably take some a few years to fully get their (and my) head around it. The explanations are comprehensive but I think some of the concepts could have been explained a little better. I realise that it is complex but a few diagrams here and there might have helped. Having said that, I think it is a good book which will serve me well long term. Based on this I ordered Analyzing Data with Power BI and Power Pivot and hope the quality is as high as on this one.

The well renowed experts delivers on their promise. I enjoyed reading the content which is well written and in the fewcases where extra examples are needed there is a large blog community on the matter by both the authors and other experts on DAX.

This looks like it *really* IS the definitive guide to DAX. No doubts about it. Very, very thorough. If you are serious about DAX, this IS the way to go.

An awesome book to learn DAX, buy it

Brilliant!