Join a two-day intensive training with the designer of the popular ‘jOOQ’ database access library, a world-renowned expert and conference speaker on improving Java/DB integration.

About the training

This workshop enables developers to use SQL as a first class language in their applications. Due to the historic divide between database and programming skills the majority of SQL written by developers suffers from at least one of the following problems:

  • It is overly complex and could be greatly simplified via refactoring
  • It has poor performance, due to insufficient knowledge of DB internals
  • It does not leverage modern and/or vendor specific SQL functions

All of these issues can be fixed by encouraging developers to treat SQL with as much respect as their normal code, educating them about performance implications and informing them about new features available in commercial and open source databases. This masterclass achieves these three goals.

Course Outline

Day 1: SQL Functionality

  • Introduction to the course databases and revision of core SQL constructs
  • Advanced constructs, such as row value expressions and hierarchical SQL
  • Applying window functions for complex calculations within the database
  • Modern use of DML (e.g. using MERGE instead of INSERT and UPDATE)
  • Using esoteric data types (json, hstore, arrays, composite types, ranges etc…)

Day 2: SQL Performance

  • The cost based optimiser (CBO)
  • The inner workings of an index
  • Writing performant predicates
  • Constraints, or why metadata matters
  • Faster writes / data manipulation (DML)
  • Antipatterns, myths, and best practices


This is a 2-day day workshop delivered using the DB2 LuW, MySQL 8.0+, Oracle, PostgreSQL, or SQL Server databases. Delegates should be experienced at writing SQL queries. Delegates should bring their own laptop, setup instructions will be provided.

The trainer

Lukas Eder is the founder and CEO of Swiss company Data Geekery GmbH, which has been selling database products and services since 2013. His specialty is the interaction of Java and SQL. Most of this experience has been obtained via the Swiss E­Banking sector. He is best known in the Java community as a Java Champion, as the designer of the popular ‘jOOQ’ database access library, and as a frequent conference speaker on improving Java/DB integration.

Register Now
Training fee: €600/participant plus VAT, only 20 seats available
To book your seats, please contact us by email ([email protected]) or phone (+40 741 103 133).