34 comprehensive modules, 300 practice exercises, 5 real-world projects, 150 interview questions, aur complete enterprise database sandbox — natural aur clear Roman Hinglish mein.
| Learning Track | Recommended Modules | Main Objective |
|---|---|---|
| Foundations (Days 1–7) | 01 se 10 tak | DDL, DML, Data Types, Constraints, 3VL Filtering, aur Aggregations mein master karein |
| Relational & Queries (Days 8–15) | 11 se 14 tak | Multi-table JOINs, Set operations (UNION), Subqueries, aur CTEs |
| Architecture & Internals (Days 16–25) | 15 se 25 tak | Schema design, 1NF se BCNF normalization, B+ Trees, Transactions, aur Optimization |
| Career & Projects (Days 26–30) | 26 se 33 tak | 5 complete projects, 300 exercises, 150 interview questions, aur production cheat sheets |
-- Hamare unified database se connect karein:
USE sql_mastery;
SELECT
d.department_name,
COUNT(e.employee_id) AS total_headcount,
ROUND(AVG(e.salary), 2) AS avg_department_salary
FROM departments d
JOIN employees e ON d.department_id = e.department_id
GROUP BY d.department_id, d.department_name
ORDER BY avg_department_salary DESC;