Off to OSCON

I will be heading to my first OSCON next week where I will be presenting MySQL Proxy: from Architecture to Implementation in conjunction with Giuseppe Maxia .

As was written by Colin Charles Our booth is yours… Sun at OSCON , Sun/MySQL would appear to also have a reasonable turnout. So it will be good to see some old colleagues and friends, and hopefully meet some new contacts.

While I am based on the East Coast, I do also provide expert MySQL consulting for clients in any location. Should you like to find out more about my offerings covering Architecture, Performance, Scaling, Migration and Knowledge Transfer for MySQL Solutions, please Contact Me and I will arrange a time to meet next week.

Tagged with: Databases General MySQL MySQL Proxy OSCON 2008

Producing Alternative Means statistics with SQL

Producing Alternative Means statistics with SQL

MySQL’s built-in AVG() computes the arithmetic mean — the sum divided by the count. That is the right default for many questions, but it is not always the right measure of central tendency.

Extending MySQL Capabilities with UDFs, Plugins and Components

Extending MySQL Capabilities with UDFs, Plugins and Components

MySQL offers three different approaches to extending the SQL capabilities with the default product you download and install. These are: User Defined Function (UDF) MySQL Manual MySQL Plugin MySQL Manual MySQL Component MySQL Manual For the purposes of this post I will be using the current LTS version MySQL 8.

Producing One-Sample Z-Test statistics with SQL

Producing One-Sample Z-Test statistics with SQL

The one-sample Z-test determines whether a sample mean differs significantly from a known population mean when the population standard deviation is also known. It is the appropriate test when the population parameters are established — quality control benchmarks, national averages, long-run process measurements — and you want to evaluate whether a new sample is consistent with them.