OSCON 2009 at a discounted rate

OSCON moves this year from Portland to San Jose.

As one the community panel for Drizzle: Status, Principles, and Ecosystem I also have a speaker discount which you can combine with O’Reilly having also extended early bird registration until June 23.

Be sure to add the os09fos code for an additional 20% off, and be sure to shout me a drink there.

Tagged with: Databases Drizzle General MySQL Open Source OSCON 2009

Producing IQR and Outlier statistics with SQL

The interquartile range (IQR) measures the spread of the middle 50% of a distribution — the distance between the first quartile (Q1) and the third quartile (Q3). Combined with Tukey’s 1.

Producing Mode statistics with SQL

The mode is the value or values that appear most frequently in a dataset. Unlike the mean or median, it applies naturally to categorical and ordinal data — star ratings, product codes, survey responses — and reveals what is most common, not what is average.

Extending MySQL Capabilies with UDFs, Plugins and Components - Part 2

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 In my prior post I provided a new uuidv function that accepted a numeric argument to return a string of the version of UUID specified.