Oracle on FromDual GmbH

MariaDB sql_mode = 'oracle'

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 25 Mar 2021 20:15:22 +0000

MariaDB has some time ago introduced or reused the sql_mode = 'oracle'. What they basically try to do is to implement a subset of the Oracle PL/SQL language. Because we receive more and more request from customers about MariaDB’s Oracle PL/SQL it is worth investigating a bit more in this feature and summarize the state of the art of this topic in this article.

Databases are standardized but in detail they behave different

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 10 Feb 2021 11:47:20 +0000

For a fancy application we want to query a chunk of rows from a table and therefore we need the minimum and the maximum of the Primary Key of these rows.
Because InnoDB is an Index Organized Table or Index Clustered Table we know that this access will use the Primary Key. But to be sure and to be compliant with the standard (and compatible) we use and ORDER BY on the Primary Key.

MariaDB PL/SQL Examples

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 04 Dec 2019 21:49:04 +0000

Before you start

SQL> SET SESSION sql_mode='ORACLE';

Infinite Loop Example

DELIMITER /

BEGIN

LOOP
 SELECT 'Hello world from MariaDB anonymous PL/SQL block!';
END LOOP; 

END;
/

DELIMITER ;

Select Hello World FromDual with MariaDB PL/SQL

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 12 Jun 2018 23:36:05 +0000

MariaDB 10.3 was released GA a few weeks ago. One of the features which interests me most is the MariaDB Oracle PL/SQL compatibility mode.

Migration from other databases to MySQL or MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 03 Jul 2015 08:32:31 +0000

Database migration tools

A generic database migration tool to MySQL and MariaDB is the MySQL Workbench.

Support policy for MariaDB, MySQL and PostgreSQL

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 23 Dec 2014 15:46:54 +0100

Distribution maintenance policies
MariaDB Lifetime Support Matrix for MariaDB Releases
MariaDB Corp Enterprise Support Subscriptions
MySQL Lifetime Support Matrix for MySQL Releases
Oracle Corp Enterprise Support Subscriptions for MySQL
PostgreSQL Versioning Policy
Database Support by FromDual

Distribution maintenance policies

Maintenance policies for Long Term Support (LTS) releases of common distributions:

FromDual partner

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 21 Dec 2010 17:44:18 +0000

FromDual cooperates with the following companies:

Topic	Company	Description
MariaDB/MySQL Training	Linuxhotel GmbH	The Linuxhotel is one of the most important Open Source Software training and meeting places in German-speaking countries.
MariaDB Support	MariaDB AB	FromDual helps you to get into MariaDB Enterprise Subscriptions and Services.
MariaDB/MySQL Training	GFU Cyrus AG	GFU is one of the most important Enterprise training facilities in Germany.
MariaDB/MySQL Training	Heinlein Academy	The Heinlein Academy is THE Linux- and OpenSource-Training facility in Berlin (Germany).
MySQL Support	MySQL	FromDual helps you to get into MySQL Enterprise Edition and its MySQL Technical Support.
MySQL NDB Cluster Support	iClaustron AB	iClaustron has a deep insight into MySQL NDB Cluster and RonDB. They are our preferred NDB Cluster contact.

The battle against Oracle is probably over but has the real war begun yet?

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 20 Jan 2010 09:36:00 +0100

According to different sources from the web the decision about the Oracle - Sun merger has been approved by the European commission soon. So at least in the West it is clear what is going on. Let us see what the East decides… [ 1 ], [ 2 ].