Sql/Psm on FromDual GmbH

MariaDB/MySQL Stored Language Examples

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 19 Mar 2020 17:53:29 +0000

MariaDB/MySQL Stored Language is called SQL/PSM.
There are 4 different types of Stored Language: Stored Procedures, Stored Functions, Triggers and Events.

Enable General Query Log per Connection in MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 10 Jul 2019 20:27:58 +0000

The General Query Log in MariaDB is a Log (file or table) that logs every statement sent from the Application to the MariaDB Database Server from the Connect Command to the Quit Command. A simple example you can find here:

Last login of MySQL database users

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 01 Dec 2012 10:05:50 +0000

MySQL hosting providers can easily loose the overview over their customers and which user or schema is still in use and which not.

How good is MySQL INSERT TRIGGER performance

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 03 Aug 2011 17:08:36 +0000

Abstract: In this article we discuss how big is the performance impact of MySQL TRIGGERs compared to application side logging (with INSERT) into a MySQL table.

MySQL logon and logoff trigger for auditing

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 10 Dec 2010 23:23:51 +0000

A while ago I did some research about MySQL audit functionality and logon a and logoff triggers. MySQL and MariaDB provide a logon trigger in the form of the init_connect variable but no logoff trigger where most of the work for auditing would be done. When we would have a logoff trigger we could track the login and possibility some activity of a user and implement auditing functionality.

Materialized Views with MySQL

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 13 Mar 2010 13:55:05 +0000