About SQLCase

SQLCase teaches SQL through 50 detective-style cases instead of dry reference syntax. Alex, a data analyst at a small online store called ByteMart, gets one real business question per case — from "where did this customer's order go?" to full profit, cohort, and attribution analysis. You solve each case yourself, in a real SQL editor, with progressive hints drawn from Alex's own reasoning if you get stuck.

No installs, no signup, no waiting — every query gets graded instantly. Three tracks take you from your very first SELECT to recursive CTEs, RFM segmentation, and full business dashboards.