Managing MySQL Version Upgrades Presentation

The following presentation was given at the Oracle Technology Network (OTN) Latin America 2015 tour events in Uruguay, Argentina, Chile and Peru.

In this presentation I talk about the various versions and means of installing and upgrading MySQL including:

  • MySQL version history from 3.23 to 5.7.8
  • Historical installation options
  • Recommended use of Oracle yum repository for current version
  • The installation and upgrade process, and errors that occur
  • Compatibility changes between MySQL 5.5 and MySQL 5.6 including
    • Reserved words (and their true impact)
    • Legacy TIMESTAMP usage
    • FULLTEXT indexes
    • The query optimizer
    • Clear text password warnings and security improvements
  • Important configuration differences
  • Other recommendations
  • The use of replication
Tagged with: Databases MySQL

Producing IQR and Outlier statistics with SQL

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

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

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.