March 2024
Intermediate to advanced
814 pages
22h 10m
English
Content preview from Extending Power BI with Python and R - Second Edition
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Boosting Data Loading Speed in Power BI with Parquet Format
Often, the analyses you are asked to perform in Power BI need to be based on fairly large data sources. In the previous chapter, you learned how to work with data that is larger than the RAM available on your machine, and you saw that query execution times are in the order of minutes.
Now consider a report that needs to perform several calculations on the same corpus database. Obviously, the performance of the overall execution time of the report is strongly related to the expected number of operations to be performed on the database. Therefore, being able to reduce the execution time of individual queries will allow you to have a report whose dataset is updated as quickly as possible ...
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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.