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Percona Live 2017: MySQL Makes Toast

 | April 26, 2017 |  Posted In: MySQL, Percona Live

MySQL Makes Toast

Every day at Percona Live 2017 brings something new and unusual – and on this particular day, we found out that MySQL makes toast. A lot of people think that with MySQL and open source software, you can do anything. While many might view this metaphorically, Percona’s Alexander Rubin (Principal Consultant) takes this statement very seriously. […]

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Advanced Query Tuning in MySQL 5.6 and MySQL 5.7 Webinar: Q&A

 | August 24, 2015 |  Posted In: MySQL, Technical Webinars

Thank you for attending my July 22 webinar titled “Advanced Query Tuning in MySQL 5.6 and 5.7” (my slides and a replay available here). As promised here is the list of questions and my answers (thank you for your great questions). Q: Here is the explain example:

why is site_id a covered index for […]

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Generated (Virtual) Columns in MySQL 5.7 (labs)

 | April 29, 2015 |  Posted In: MySQL

About 2 weeks ago Oracle published the MySQL 5.7.7-labs-json version which includes a very interesting feature called “Generated columns” (also know as Virtual or Computed columns). MariaDB has a similar feature as well: Virtual (Computed) Columns. The idea is very simple: if we store a column

in our table we may want to filter or group […]

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Advanced MySQL Query Tuning (Aug. 6) and MySQL 5.6 Performance Schema (Aug. 13) webinars

 | August 4, 2014 |  Posted In: Insight for DBAs, MySQL, Technical Webinars

I will be presenting two webinars in August: Aug 6, 10 a.m. PDT: Advanced Query Tuning in MySQL 5.6 and Beyond Aug 13, 10 a.m. PDT:  Using Performance Schema to Monitor and Troubleshoot MySQL 5.6 This Wednesday’s webinar on advanced MySQL query tuning will be focused on tuning the “usual suspects”: queries with “Group By”, “Order […]

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Using UDFs for geo-distance search in MySQL

 | June 19, 2014 |  Posted In: MySQL

In my previous post about geo-spatial search in MySQL I described (along with other things) how to use geo-distance functions. In this post I will describe the geo-spatial distance functions in more details. If you need to calculate an exact distance between 2 points on Earth in MySQL (very common for geo-enabled applications) you have at […]

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Measure the impact of MySQL configuration changes with Percona Cloud Tools

 | June 11, 2014 |  Posted In: Insight for DBAs, MySQL, Percona Cloud Tools

When you make a change to your MySQL configuration in production it would be great to know the impact (a “before and after” type of picture). Some changes are obvious. For many variables proper values can be determined beforehand, i.e. innodb_buffer_pool_size or innodb_log_file_size. However, there is 1 configuration variable which is much less obvious for many people […]

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