MySQL and MariaDB optionally log slow queries into the Slow Query Log – or just Slow Log, as friends call it. However, there are good reasons to log all the queries, not just some of them.
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User Statistics plugin allows to analyse the way tables are used, which of them are used most – and therefore, on what we need to focus on to optimise the server’s workload.
Many PostgreSQL features are not available in Redshift, particularly those that are not suitable for a database cluster or for analytics, and those that Amazon didn’t consider important enough to spend the necessary resources to maintain them.
In MariaDB and MySQL, all tables should have a primary key – especially InnoDB tables. Here's why.
Updating triggers in production without causing a service disruption
Does NULL mean "no value"? Or does it mean "an unknown value"? Its semantics and history are ambiguous and inconsistent.
It is possible to prevent some users from seeing a set of rows in a certain table.
MariaDB implemented several improvements to the DROP TABLE statement. We summarise them here. This article will be kept up to date when MariaDB implements further improvements, in the future.