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Percona Live Europe Presents: MariaDB System-Versioned Tables

 | October 17, 2018 |  Posted In: Events, MariaDB, MySQL

PLE Frankfurt Logo

System-versioned tables, or temporal tables, are a typical feature of proprietary database management systems like DB2, Oracle and SQL Server. They also appeared at some point in PostgreSQL, but only as an extension; and also in CockroachDB, but in a somewhat limited fashion. The MariaDB® implementation is the first appearance of temporal tables in the MySQL […]

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Export to JSON from MySQL All Ready for MongoDB

 | October 16, 2018 |  Posted In: Entry Level, MongoDB, MySQL, Tools

export-data-to-JSON-from-MySQL

This post walks through how to export data from MySQL® into JSON format, ready to ingest into MongoDB®. Starting from MySQL 5.7+, there is native support for JSON. MySQL provides functions that actually create JSON values, so I will be using these functions in this article to export to JSON from MySQL: JSON_OBJECT JSON_ARRAY These […]

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Percona Live Europe Tutorial: Query Optimization and TLS at Large Scale

 | October 15, 2018 |  Posted In: Events, MariaDB, MySQL, Open Source Databases

For Percona Live Europe this year, I got accepted a workshop on query optimization and a 50-minute talk covering TLS for MySQL at Large Scale, talking about our experiences at the Wikimedia Foundation. Workshop The 3-hour workshop on Monday, titled Query Optimization with MySQL 8.0 and MariaDB 10.3: The Basics is a beginners’ tutorial–though dense […]

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Generating Identifiers – from AUTO_INCREMENT to Sequence

 | October 12, 2018 |  Posted In: Entry Level, MariaDB, MySQL, Tools

generating complex sequences

There are a number of options for generating ID values for your tables. In this post, Alexey Mikotkin of Devart explores your choices for generating identifiers with a look at auto_increment, triggers, UUID and sequences. AUTO_INCREMENT Frequently, we happen to need to fill tables with unique identifiers. Naturally, the first example of such identifiers is […]

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