OngoingOnline · Education · intermediate · sql, data-analysis, database
A free online competition testing advanced SQL skills by requiring participants to write queries that identify the highest-spending customer in each country. Targeted at students and professionals looking to practice database analysis.
OngoingOnline · Tech · intermediate · python, postgresql, data-pipeline
An online competition where participants optimize data pipelines by transforming large JSONB datasets into normalized relational structures using Python and PostgreSQL. This free event targets developers and data engineers looking to improve their SQL and Python skills for a $100
Online · Education · intermediate · data-science, sql, nlp
A free 12-day online data science competition where participants restore a fictional system using SQL, NLP, and data visualization. This event targets students and professionals looking to practice data analysis, problem-solving, and building end-to-end data solutions.