Structured SQL practice using real-style business datasets and LeetCode problems. Written in MySQL/MariaDB via XAMPP + DBeaver.
✅ Built — Employee dataset (basics → advanced multi-table analysis) · Coffee shop dataset (joins, revenue, grouping) · 21 Easy + 3 Medium LeetCode problems solved
🔄 Now — Expanding coffee shop into a full business case: product mix, peak hour revenue, staff cost vs. sales
🎯 Next — Window functions · CTEs · Analyst-level queries that answer real business questions
Stack: MySQL · MariaDB · XAMPP · DBeaver