Recipient: Karolina Śliwa

Issue date: 02.01.2026

Description: This intensive 9-week SQL training program provided comprehensive knowledge and hands-on practice in database management and SQL query development. The curriculum covered fundamental and advanced SQL concepts, including data selection, aggregation, joins, complex queries, window functions, and optimization techniques. A strong emphasis was placed on daily practical exercises, ensuring the ability to apply theoretical knowledge to real-world scenarios. Participants also worked with text and date operations, DML and DDL commands, and learned principles of writing clean and efficient SQL code.