Primary keys are the set of columns that uniquely identify a single row in a table, and no two rows match the same key. Using primary keys helps create faster queries and permits you to perform targeted updates. Savvy database developers know that using primary keys is a common best practice, and many features require […]

This post introduces Generated Invisible Primary Keys (GIPKs) and how to enable them with MySQL HeatWave.

Oracle recently released MySQL 8.0.36 and MySQL 8.3, and this is a perusal of the release notes to determine what is new, what is in the seventy-three bugs fixed, and what has changed in the three months since the last releases. Comments in italics are my own and do not reflect the view of anyone […]

MySQL Server 8.3.0 and 8.0.36 are now available for download, and in the MySQL HeatWave Service. These are the latest General Availability (GA) releases as of January 16, 2024. MySQL Server 8.3.0 GA, an innovation release includes:   MySQL Server 8.0.36 GA release includes:   Both 8.0.36 and 8.3.0 releases come with full production support.    What’s new […]

Maintaining a production dataset at a manageable size can present a considerable challenge during the administration of a MySQL InnoDB Cluster.

Old Days

Back in the day when we only had one main copy of our data (the source), and one read copy (the replica) that we used to look at current and old data from our main system, we used a special trick to remove data without affecting the replica. The trick was to turn off writes to the binary log for our removal commands in the main system. External tools like pt-archiver were also able to use that trick. To stop bypass writing into the binary log, we used the command: SET SQL_LOG_BIN=0.

This mean that on the main production server (replication source), we were purging the data without writing the delete operation into the binary logs:

Current Days

These …

MySQL January 2024 GA Releases Now Available

Understanding how to merge or join strings together in SQL is crucial for handling data effectively. This is especially handy when you’re creating SQL queries, helping you combine info from different columns, make meaningful labels, and get data ready for analysis. In this guide, we’ll tell you how to write an SQL query to concatenate […]

Source

Recently I noted a strange MySQL replication error in a Percona XtraDB Cluster (PXC) node replicating from a standard MySQL instance. “Node has dropped from cluster”. This is a quick blog…

The post Node has dropped from cluster error in Galera Cluster first appeared on Change Is Inevitable.

The MySQL Configurator for Windows was introduced as part of the MySQL Server 8.1.0 packages, allowing the configuration and reconfiguration of server installations with an easy to use GUI. However, the prior tool did not support upgrading existing server installations to the most recent version, only allowing side-by-side configuration to a newer server version. This meant that users needed to […]

Episode 53 of MySQL Shorts is now available!