In SQL, using the LIKE operator is a powerful way to find strings that match a certain pattern. It's suitable for most use cases, thanks to its two jolly characters: _ means any one character. %...
Learn how to enable an audit log plugin on the Community version of MySQL 8 Server.
Shadowserver has announced that they found over 3.6 million MySQL servers exposed to the web, following their Accessible MySQL Server Report.
The optimal way to store a MD5 hashes in MariaDB, and how to work with them.
MariaDB supports regular expressions, but regexps won’t use indexes. Here’s a workaround that can be used in some cases.
The most widely known query optimisation rule is that developers should always avoid SELECT *. Even when all columns are needed, they should list their names, because more columns could be created...
Some queries always fail or never return rows. They should be eliminated to improve database performance.
Comparisons are tricky when NULL values are involved. But some databases offer some special, handy syntax to solve the problem.
Vettabase specialises in expert consulting and automation for your database infrastructure. We offer professional services and training for MySQL, MariaDB, PostgreSQL and Cassandra.
In my first post in 2023, I want to give you a summary of MariaDB 10.10. Some may argue that I'm a bit late because it...
Cassandra consistency levels are a tricky concept, until you familiarise with them. They’re based on a simple consideration: not all data and not all queries require the same level of correctness.
MariaDB supports several ways to compose strings dynamically. Some of them might be well-known, others aren’t familiar to you. This article covers all the ways to compose strings.
In my first post in 2023, I want to give you a summary of MariaDB 10.10. Some may argue that I'm a bit late because it...
MariaDB supports several ways to compose strings dynamically. Some of them might be well-known, others aren’t familiar to you. This article covers all the ways to compose strings.
In SQL, using the LIKE operator is a powerful way to find strings that match a certain pattern. It's suitable for most...
In...
Learn how to enable an audit log plugin on the Community version of MySQL 8 Server.
Shadowserver has announced that they found over 3.6 million MySQL servers exposed to the web, following their Accessible MySQL Server Report.
Cassandra consistency levels are a tricky concept, until you familiarise with them. They’re based on a simple consideration: not all data and not all queries require the same level of correctness.
Choose the best balance between speed and consistency by setting proper consistency levels.
Cassandra 4.0 GA was released on 26th July 2021. Older versions users need to upgrade quickly.
In SQL, using the LIKE operator is a powerful way to find strings that match a certain pattern. It's suitable for most...
What is faster: PostgreSQL or AlloyDB? Some benchmarks and a performance analysis.
Why autovacuum is important in PostgreSQL and how to configure it properly.