November 2025
Beginner to intermediate
336 pages
7h 48m
English
book
SQL for Data Analytics - Fourth Edition
by Jun Shan, Haibin Li, Matt Goldwasser, Upom Malik, Benjamin Johnston
Content preview from SQL for Data Analytics - Fourth Edition
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10
Performant SQL
So far, you have learned how to create SQL statements for different types of requests. You have also seen that you can achieve the same goal with different queries. In reality, not all SQL statements are equal. Some run faster, some run slower. These days, analyses or queries are increasingly becoming a part of a larger service or product. One such example is a travel advisory system that incorporates the current location with nearby businesses and/or travel sites. For such a system to be effective and provide up-to-date navigation information, the database must be analyzed at a rate that keeps up with the speed of the car and the progress of the journey. Any delays in the analysis would significantly impact the application’s ...
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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.