SQLDay is the largest conference in this part of Europe dedicated to the Microsoft data platform, including databases, Big Data and Business Intelligence solutions, and advanced data analytics. The conference has been organized since 2009 by enthusiasts from all over the country who are part of the Data Community Poland association, formerly known as the Polish SQL Server User Group (PLSSUG).

Experienced organizers of previous editions of the event are responsible for the content and success of the conference. They work closely with the global community of professionals working with the Microsoft data platform.