MySQL 8.0.0 introduces three new miscellaneous UUID functions of IS_UUID(), UUID_TO_BIN() and BIN_TO_UUID() joining the UUID() (in 5.0) and UUID_SHORT() (in 5.1) functions. See 8.0.0 Release Notes.
Thanks to the great work and hosting by Marcus Popp anybody can test out the SQL syntax of MySQL 8.0.0 using db4free without installing anything. If you want a minimal install Giuseppe Maxia provides docker minimal images of 5.0+ versions …
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FRM-less, transactional data dictionary is arguably the most
significant feature change announced MySQL 8.0 development
release. The server still has two separate dictionaries (MySQL,
InnoDB) but the infamous FRM files are finally being replaced
with transactional, InnoDB-based storage.
While this is interesting for various reasons, this particular
post will focus on the impact this change has on data dictionary
performance.
Test configuration Server configuration:
In MySQL 5.7 the new JSON support had been added. The JSON support consists out of three features:
All three features combined allow building very powerful applications without committing to a fixed data structure on every part, but I was missing one thing a lot: Aggregation.
A topic I'm thinking a lot about is finding ways to select nested data. In MySQL we typically have two ways for this. Either one sends multiple queries to retrieve different nesting levels or one builds JOINs which tend to deliver repetitive responses. A tool …
[Read more]Coinciding with the new native data dictionary in MySQL 8.0, we have made a number of useful enhancements to our INFORMATION_SCHEMA subsystem design in MySQL 8.0. In this post I will first go through our legacy implementation as it has stood since MySQL 5.1, and then cover what’s changed.…
Welcome to a new Percona Live Europe featured talk with Percona Live Europe 2016: Amsterdam speakers! In this series of blogs, we’ll highlight some of the speakers that will be at this year’s conference. We’ll also discuss the technologies and outlooks of the speakers themselves. Make sure to read to the end to get a special Percona Live Europe registration bonus!
In this Percona Live Europe featured talk, we’ll meet Manyi Lu, Director Software Development at Oracle. Her talk will be on MySQL 8.0: what’s new in Optimizer. There are substantial improvements in the optimizer in MySQL 5.7 and MySQL 8.0. Most noticeably, users can now combine …
[Read more]Some time ago, feedback was requested on new replication default after MySQL 5.7. Some of the suggested default are:
relay-log-info-repository = TABLE (previous default FILE) relay-log-recovery = ON (previous default OFF) master-info-repository = TABLE (previous default FILE) sync-master-info = 1,000 (previous default 10,000) sync-relay-log = 1,000 (previous default 10,000)
I agree on the
Lossless RBR TL/DR: There’s been talk of moving the next release of MySQL to minimal RBR: I’d like to suggest an alternative: lossless RBR For MySQL 5.8 there was talk / suggestions about moving to minimal RBR as the default configuration (http://mysqlserverteam.com/planning-the-defaults-for-mysql-5-8/). I’m not comfortable with this because it means that by default you do not have … Continue reading Lossless RBR for MySQL 8.0?
The post Lossless RBR for MySQL 8.0? first appeared on Simon J Mudd's Blog.
