The following Lua scripts are the examples are from my MySQL Proxy @ OSCON 08 presentation.
Requires MySQL Proxy Logging Module .
What is released is the Version for MySQL 5.0. A generic version for all MySQL versions is not yet released.
This script is part of the standard MySQL Proxy examples.
Additional Lua scripts from MySQL forge are available here .
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.
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.
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.
