Kim Berg Hansen is a senior developer at Trivadis Denmark A/S, using Oracle SQL and PL/SQL since 2000. He specializes in doing it all in a single SQL statement wherever possible, utilizing the database to the max, and authoring SQL quizzes on Oracle DevGym. Kim has presented at ODTUG Kscope, UKOUG, DOAG, and OUGN conferences. Kim is Oracle ACE and Oracle OCE in SQL.