Advanced SQL workbook: subqueries, window functions, CTEs, recursive CTEs, and datetime practice.

SQL Case Files is a free interactive SQL game that teaches SQL through crime-solving challenges. Learn SQL online with hands-on puzzles, realistic datasets, SQL practice exercises, and a full browser-based SQLite database. Perfect for beginners learning SQL, data analysts preparing for interviews, and anyone who wants to practice SQL for free.

MySQL Simulator Pro is a fully interactive, browser-based MySQL database simulation environment that lets you write and execute real SQL queries — including SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, ALTER TABLE, CREATE INDEX, JOINs, transactions (BEGIN/COMMIT/ROLLBACK), and even role-based access control (GRANT/REVOKE)🗄️👨🏿‍💻.

🕵️♂️ Solve crimes and learn SQL with interactive challenges, turning coding into an engaging detective game that teaches real-world skills.

🔍 Business Problem → 🗄️ Database Tables → 🧹 SQL Cleaning → 🧮 Aggregations & KPIs → 📊 Reports/Dashboards → 📈 Insights → 🎯 Business Actions

一套基于 MySQL 的 SQL 语句练习记录项目，包含建库建表、测试数据、基础查询、聚合统计、JOIN 连接查询、子查询、事务、视图、索引等练习内容，并给每条 SQL 运行结果展示了截图，方便系统学习和复盘。