January 2019
Intermediate to advanced
286 pages
7h 41m
English
Content preview from Advanced MySQL 8
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How does MySQL optimizer think in MySQL 8.0?
Let's look at the main improvements in the MySQL 8.0 optimizer:
- MySQL 8.0 now more effectively supports advanced SQL features such as common table expressions, windowing functions, and the grouping() function
- One feature that DBAs will appreciate is the invisible index
- More tips in Query Rewrite Plugin
- On the performance side, the cost model has really been improved for superior performance
- Histogram statistics in MySQL 8.0 improve the statistics based on data distribution
I've always mentioned that to get optimal performance, you need to understand how MySQL thinks or reacts to your queries; this step in understanding is much more important than you think. For example, have you ever had situations ...
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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.