September 2017
Intermediate to advanced
802 pages
37h 6m
English
Content preview from Microsoft Power BI Cookbook
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Normalize large dimensions
Large-dimension tables (approximately one million+ rows), with their high-cardinality relationships to fact tables, are a major performance bottleneck with Power BI and SSAS Tabular import models.
- Consider the following dimension table with attributes describing both resellers and promotions:
Reseller promotion dimension table
- The consolidated table contains 10,520 rows and the relationship column on the Reseller Sales table is 19.4 MB in size.
Reseller Promo Key, approximately 20 MB in size
- Split (normalize) ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.