The latest from the MySQL community

Indexes in MySQL are a very complex beast. We have covered MySQL indexes in the past, but we have never taken a deeper dive into them - we will do that in these series of blog posts. This blog post should act as a very general guide to indexes while the other parts of these series will dive a little bit deeper into these subjects. 

What are Indexes?

In general, as already noted in a previous blog post about indexes, an index is an alphabetical list of records with references to the pages on which they are mentioned. In MySQL, an index is a data structure that is most commonly used to quickly find rows. You might also hear the term “keys” - it refers to indexes too.

What do Indexes Do?

In MySQL indexes are used to quickly find rows with specific column values and to prevent reading through the entire table to find …

The AWS ledger database (QLDB) is an auditors best friend and lives up to the stated description of “Amazon QLDB can be used to track each and every application data change and maintains a complete and verifiable history of changes over time.

MySQL Server offers, among the different security features, encryption at rest (or Transparent Data Encryption, TDE) in the commercial release (find the differences with Community here).

While testing TDE with MySQL InnoDB Cluster, I was wondering what inner mechanism was implemented to deal with TDE, master keys and keyrings, and the clone plugin. If I need to clone an instance, how would everything work so to guarantee my InnoDB Cluster instances will still be encrypted, and the keyring chosen would still use a good master key to decrypt tablespace keys and finally tablespace pages?

The answer is obviously that this is fully managed. You can add instances to …

This is the next blog in our competitor comparison series in which we look at the main solutions for MySQL high availability, disaster recovery and geographic distribution. Here we focus on highly available, geo-scale, multi-region MySQL for mission-critical sites and apps with ClusterControl as compared to MySQL clusters with Continuent Tungsten, the only complete, fully-integrated clustering solution for MySQL - on-premises, in the cloud, hybrid-cloud or multi-cloud.

Tags: clustercontrolhigh availability (HA)MySQLdisaster recovery (DR) …

May 13th is the day for the MySQL Tracks at the Percona Live  conference. 

Besides an announcement for an exciting new product, you will find sessions on:

• MySQL Server Component Manifest Files
• Insights into the new Oracle MySQL Database Service
• Oracle MySQL Database Service with HeatWave for Real-Time Analytics
• MySQL Architectures in a Nutshell
• Successfully run your MySQL NDB Cluster in Kubernetes
• Validating JSON
• Migration from 5.6 to 8.xx.xx
• Dbdeployer in action - Optimised MySQL sandboxes
• MySQL Shell for DBAs (including Dump & Load)

All opinions expressed in this blog are those of Dave Stokes who is actually amazed to find …

During many decision-making phases in programming code (conditional logic), there are times execution depends on several different factors. Multiple conditional tests are powerful and constraining, oftentimes requiring more than one test to be passed in order for program flow to proceed. For MySQL (and standard SQL in general) the CASE expression is used for IF/THEN/ELSE conditional logic. The post, MySQL Simple CASE Expression – with examples, covered Simple CASE queries which are essentially equality tests. MySQL Simple CASE is but one variant of 2, with the other being a MySQL Searched CASE Expression.  A MySQL Searched CASE Expression can have multiple conditional tests in each WHEN …

We are pleased to announce the release of MySQL Cluster 8.0.25. MySQL Cluster is the distributed, shared-nothing variant of MySQL. This storage engine provides: In-Memory storage – Real-time performance (with optional checkpointing to disk) Transparent Auto-Sharding – Read & write scalability Active-Active/Multi-Master geographic replication 99.999% High Availability with no single point of failure and on-line […]

Magento is an Open-Source e-commerce platform written in PHP using multiple other PHP frameworks such as Laminas and Symphony. Magento source code is distributed under Open Software License v3.0.

Deploying Magento is not always easy as it often requires registration. However the source code is also availble on GitHub.

Magento supports MySQL 8.0 since version 2.4.0 (July 28th 2020).

In Magento’s documentation, there is a warning about GTID support:

This is not anymore a …

Dear MySQL users,

MySQL Connector/NET 8.0.25 is the latest General Availability release
of the MySQL Connector/NET 8.0 series. This version supports .NET 5.0
and the X DevAPI, which enables application developers to write code
that combines the strengths of the relational and document models
using a modern, NoSQL-like syntax that does not assume previous
experience writing traditional SQL.

To learn more about how to write applications using the X DevAPI, see

http://dev.mysql.com/doc/x-devapi-userguide/en/

For more information about how the X DevAPI is implemented in
Connector/NET, see

http://dev.mysql.com/doc/dev/connector-net

NuGet packages provide functionality at a project level. To get the
…

Data Analytics is important in any company as you can see what happened in the past to be able to make smart decisions or even predict future actions using the existing data.

Analyze a huge amount of data could be hard and you should need to use more than one database engine, to handle OLTP and OLAP workloads. In this blog, we will see what is HeatWave, and how it can help you on this task.

What is HeatWave?

HeatWave is a new integrated engine for MySQL Database Service in the Cloud. It is a distributed, scalable, shared-nothing, in-memory, columnar, query processing engine designed for fast execution of analytic queries. According to the official documentation, it accelerates MySQL performance by 400X for analytics queries, scales out to thousands of cores, and is 2.7X faster at around one-third the cost of the direct competitors. MySQL Database Service, with HeatWave, is the only service for running OLTP and OLAP …