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MySQL Invisible Column: part III
We recently saw how the new Invisible Column feature works in MySQL since 8.0.23 and how we can use it as a Primary Key for InnoDB tables when no Primary Key was defined. As I wrote earlier, a good...
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The MySQL X DevApi: Working with NULL Values
Tweet There was an excellent question from Francis on my MySQL X DevAPI tutorial on how to work with NULL values: Is it possible to store an attribute with the null value, and how to find it (xxx is...
View ArticleMySQL Membership
MySQL membership conditions are in the MySQL 8 Documentation. They’re found in the 13.2.11.3 Subqueries with ANY, IN, or SOME section. The IN and =ANY operators both perform equality matches with one...
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JOINs - The Basics
JOINs confuse a lot of those new to Structured Query Language (SQL). If you read the various web forums popularly used to ask questions then you know that using JOINs is pretty scary for a lot of...
View ArticleBye bye MySQL 5.6!
Adieu MySQL 5.6!When you arrived in 2013 you had a lot of cool new features. There was the NoSQL Memchache plug-in that was blazingly fast, an improved Performance Shema, full texted searching for...
View ArticleA 250x improvement to tablespace truncation in MySQL Server 8.0.23
In MySQL Server 8.0.23 an improvement was made to InnoDB that allows truncation and deletion of all tablespaces to be faster. In fact, making it almost instantaneous as long as AHI is disabled. This is...
View ArticleReplicate from MySQL 5.7 to MySQL Database Service
MySQL Replication is a very common topology, widely used in various architecture. People use it, among others, for High Availability, Read Scalability or Geographic Redundancy. Another use case is to...
View ArticleAnnouncing Vitess 9
On behalf of the Vitess maintainers team, I am pleased to announce the general availability of Vitess 9. Major Themes # In this release, we have focused on making Vitess more stable after the...
View ArticleHow to create Cloudwatch alarms for RDS (MySQL) on AWS
Monitoring your RDS instances is very important, and the same applies to other resources. In this article, we will create a simple alarm for an RDS MySQL instance which will check for free storage...
View ArticleReleasing ProxySQL 2.0.16
ProxySQL is proud to announce the latest release of ProxySQL version 2.0.16 on the 26th of January 2021 ProxySQL is a high performance, high availability, protocol aware proxy for MySQL, with a GPL...
View ArticleMySQL Join Tutorial
Some believe the most important part of SQL is the ability to query data. Queries typically retrieve data by joining many tables together into useful result sets. This tutorial takes the position that...
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Import CSV file with MySQL Workbench
CSV imports with MySQL Workbench, is super simple. Since CSV’s are probably the most common data interchange format, it goes without saying that importing CSV data into MySQL is a staple task for all...
View Article5.6 Goes Deep-Six
When MySQL 5.6 went GA back in 2013, it was a major milestone for MySQL, with a large number of improvements and new features in areas such as InnoDB, partitioning, performance schema, optimizer, and...
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Percona XtraBackup 8 Enables –lock-ddl by Default
Percona XtraBackup 8.0.23 enables the “lock-ddl” option by default to ensure any DDL events do not corrupt the backups. Any DML events continue to occur, and only DDL events are blocked. A DDL lock...
View ArticleMySQL Shell 8.0.23 – What’s New?
The MySQL team is proud to announce the general availability of version 8.0.23 of the MySQL Shell. In addition to a considerable number of bugs fixed, the following changes were introduced. Improved...
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Load Balancing ProxySQL in AWS
There are several ways to deploy ProxySQL between your applications and the database servers. A common approach is to have a floating virtual IP (VIP) managed by keepalived as the application endpoint....
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MySQL NDB Cluster Backup & Restore In An Easy Way
In this post, we will see, how easily user can take NDB Cluster backup and then restore it. NDB cluster supports online backups, which are taken while transactions are modifying the data being backed...
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New Book: MySQL Concurrency
Tweet In March 2020, my book MySQL 8 Query Performance Tuning (Apress) was released. That book with its more than 900 pages in 27 chapters covered a wide range of topics from executing benchmarks with...
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Group profiles in MySQL Enterprise Firewall
MySQL Firewall is an enterprise security solution providing ease of mind while protecting your database from rogue queries. Sometimes granting wide-style access privileges may feel a bit too generous,...
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