Sharpen your SQL subquery super‑powers with this hands‑on, self‑contained practice set built around a fictional university. The project ships with an easy‑to‑load PostgreSQL script (Sub_query.sql) ...
This mini project is designed for practicing and mastering SQL subqueries — from basic concepts like IN and NOT IN to more advanced patterns using aggregation and correlated subqueries.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results