March 2018
Beginner to intermediate
638 pages
16h 29m
English
Content preview from Mastering Microsoft Power BI
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DirectQuery
The dataset designer has less control over the performance of DirectQuery datasets given that data storage and query execution is the responsibility of the source system. However, dataset designers can ensure that the DAX functions used in measures take advantage of the source system resources and can partner with source system owners and experts to test alternative data source optimizations, such as the columnstore index for SQL Server. Additionally, as advised earlier regarding the Assume Referential Integrity relationship property, performance can be significantly improved by generating inner-join SQL statements.
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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.