MySQL allows changing the location of the general log and the slow query log while the server is running by anybody having the SYSTEM_VARIABLES_ADMIN privilege to any location, including appending to existing files. In Percona Server for MySQL 8.0.28-19 we introduced a new system variable, secure-log-path, that can be used to restrict the location of these log files to avoid accidents or possible data corruption attacks.

When somebody with the system variables admin privilege changes these variables, the server runs a few sanity checks. Unfortunately, these checks are quite minimal, and only verify that the specified file is writable by mysqld.

Compared to this, other variables specifying write-related file and directory names are either read-only during the runtime of the server (such as datadir, tmpdir, or log_error), or have additional …

This post covers filtering in the WHERE clause conditional using the MySQL BETWEEN operator. Continue reading this excerpt of premium MySQL content I’m creating for anyone to learn how to use MySQL…

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

Suggested Reading

Visit any of these MySQL beginner-friendly articles for additional free learning resources:

• SELECT clause queries – MySQL Beginner Basics Series.
• …

Welcome back to this week’s OpenLampTech newsletter issue. In addition to the great PHP/MySQL content, I’ve edited one of the sections so there is a new feel to the publication. Enjoy reading the content!

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

In OpenLampTech issue #27, you will find coverage on:

• PHP nonces
• WordPress backup plugin comparison
• MySQL deadlocks
• A free MySQL eBook link
• And, much …

Aurora Serverless V2 is generally available around the corner recently 21-04-22 for MySQL 8 and PostgreSQL, with promising features that overcome the V1 disadvantages. Below are those major features

Features

• Online auto instance upsize (vertical scaling)
• Read scaling (Supports up to 15 Read-replica)
• Supports mixed-configuration cluster ie, the master can be normal Aurora(provisioned) and readers can be in serverlessv2 and vice versa
• MultiAZ capability (HA)
• Aurora global databases (DR)
• Scaling based on memory pressure
• Vertically Scales while SQL is running
• Public IP allowed
• Works with custom port
• Compatible with Aurora version 3.02.0 ie., >= MySQL 8.0.23 (only supported)
…

Chapter 5 of Efficient MySQL Performance addresses sharding, and it was difficult to write but not for technical reasons. Let me say a little more on the matter.

Chapter 5 of Efficient MySQL Performance addresses sharding, and it was difficult to write but not for technical reasons. Let me say a little more on the matter.

Chapter 5 of Efficient MySQL Performance addresses sharding, and it was difficult to write but not for technical reasons. Let me say a little more on the matter.

Getting started with authentication_oci There is a new means of connecting seamlessly to a MySQL Database Service instance in the Oracle Cloud Infrastructure. It is a method that does not require passwords, and can utilize the public key found in a OCI user’s account profile, without anyone needing to access that profile directly . It derives its access… Read More »

Watch this quick in-depth video short and learn how to find all the calendar days for a specific month using built-in MySQL date functions and recursive Common Table Expressions (CTEs). This is a repost of a free article over on my Kofi page as part of the “MySQL Learning Tier” membership…

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

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The MySQL team is excited to announce new AMD and Intel shapes in the MySQL HeatWave Database Service.  The AMD E4 shapes are based on the EPYC 7J13 processor, with a base clock frequency of 2.55 GHz and a dynamic frequency up to 3.5 GHz. New processor, better performance, and the same price as E3. […]