In this blog, I’ll use ClickHouse and Tabix to look at a new very large dataset for research.

It is hard to come across interesting datasets, especially a big one (and by big I mean one billion rows or more). Before, I’ve used on-time airline performance available from BUREAU OF TRANSPORTATION STATISTICS. Another recent example is NYC Taxi and Uber Trips data, with over one billion records.

However, today I wanted to mention an interesting dataset I found recently that has been available since 2015. This is Reddit’s comments and submissions dataset, made possible thanks to Reddit’s generous API. The …

As of MySQL 8.0.3, you now have the ability to create histogram statistics in order to provide more statistics to the optimizer. In this blog post, we will have a look at how you can create histogram statistics, and we will explain when it might be useful to have histogram statistics.…

Looks like 0.56 is not there anymore!
the latest version on the mha site is now 0.55:
https://code.google.com/archive/p/mysql-master-ha/downloads

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This Blog Post is an overview of MySQL Partitioning and its operations, Will explore following points for MySQL Partitioning,

• About Partitioning
• Partition Types
• Partition table info and SELECT Operations
• NULL Column value and MySQL Partition
• Partition table management

About Partitioning:

• It’s a plugin named as “Partition”
• MySQL …

In my previous blog post, I talked about new general tablespaces in MySQL 8.0. Recently MySQL 8.0.3-rc was released, which includes a new data dictionary. My goal is to create one million tables in MySQL and test the performance.

Background questions

Q: Why million tables in MySQL? Is it even realistic? How does this happen?

Usually, millions of tables in MySQL is a result of “a schema per customer” Software as a Service (SaaS) approach. For the purposes of customer data isolation (security) and logical data partitioning (performance), each “customer” has a dedicated schema. You can think of a WordPress hosting service (or any CMS based hosting) where each …

We are very happy to announce the general availability of MySQL Enterprise Monitor, Version 4.0. MySQL Enterprise Monitor is the best-in-class tool for monitoring and management of your MySQL assets and is included with your MySQL Enterprise Edition and MySQL Enterprise Carrier Grade subscriptions.

You can find more information on the contents of this release in the change log.

Highlights of MySQL Enterprise Monitor 4.0 include:

• Modern look and feel: a redesigned user interface delivers a vastly improved overall user experience. The visible changes--the layout, the icons, the and the overall aesthetics--provide a more natural and intuitive experience. Views dynamically change and adjust to your current context and the assets you've selected, everything from individual MySQL instances or hosts to your custom …

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.

Percona Live Europe 2017 Dublin

We’ve spent a lot of time in the last few months organizing Percona Live Europe Dublin. I want to thank all the speakers, sponsors and attendees for helping us to pull off yet another great event. While we’ll provide some perspectives, thoughts and feedback soon, all the early mornings, jam-packed meetings and the 4 am bedtimes means I’ll probably talk about this event in my next column!

In the meantime, save the date for …

Percona announces the release of Percona Monitoring and Management 1.3.1. This release only contains bug fixes related to usability.

For install and upgrade instructions, see Deploying Percona Monitoring and Management.

Bug fixes

• PMM-1271: In QAN, when the user selected a database host with no queries, the query monitor could still show metrics.
• PMM-1512: When clicking …

I just wanted to provide quick tutorial on using MariaDB’s Connector C.

I downloaded the latest Connector C (3.0.2), running MariaDB 10.1.28, and was able to get it to work fine with a simple C program using the following commands:

1. Downloaded the Connector C .msi file (32-bit, since my VS is 32-bit), extracted, and installed, which placed it at:

C:\Program Files (x86)\MariaDB\MariaDB Connector C\lib

2. You need to add the directory that contains libmaria.dll to your $PATH Environment LIB PATH variable. In my case, it was:

Control Panel -> System -> Advanced System Settings -> Environment Variables -> Choose "LIB" from under "System variables" -> then add the Connector C lib path, like:

C:\Program Files (x86)\MariaDB\MariaDB Connector C\lib

3. Then just run the following command, where my c/c++ program name is “mysql1.c”:

cl /I "C:\Program Files …

Thanks to everyone who joined us this week as we broadcast our MySQL on Docker webinar live from the Percona Live Conference in Dublin!

Our colleague Ashraf Sharif discussed how Docker containers work through to running a simple MySQL container as well as the ClusterControl Docker image (amongst other things)

If you missed the session or would like to watch it again, it’s now online for viewing.

Watch replay

Related resources

 MySQL on Docker - Blog Series

 Severalnines on Docker Hub

 ClusterControl Docker Image

Here’s the full …