SQL Quiz Hub
Enhance your SQL fundamentals — SELECT, JOINs, GROUP BY, subqueries, window functions & more.
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SQL Basics & SELECT Queries
Master WHERE, ORDER BY, DISTINCT, LIMIT & filtering basics.
30 Questions Beginner Start Quiz →🔗
SQL Joins Mastery
INNER, LEFT, RIGHT, FULL — deeply learn join logic.
35 Questions Beginner – Intermediate Start Quiz →📊
Aggregations & GROUP BY
COUNT, SUM, HAVING & group analysis.
32 Questions Intermediate Start Quiz →🧠
Subqueries & Nested SQL
Correlated subqueries, EXISTS vs IN & query tuning.
28 Questions Intermediate Start Quiz →🪟
Window Functions
Advanced analytics with RANK, ROW_NUMBER, PARTITION BY.
30 Questions Intermediate – Advanced Start Quiz →