Advanced SQL: CTE & Window Functions (1:1)

This 1:1 Advanced SQL session is designed for learners who already know basic SQL and want to level up for Data Analyst and Data Engineer interviews.

The session focuses on CTEs and Window Functions, which are commonly asked in mid-to-senior level SQL interviews and real-world analytics work.

What we will cover:

1. Common Table Expressions (CTEs):
2. Why and when to use CTEs
3. Writing readable and modular queries
4. Multiple CTEs and chaining
5. Window Functions:
6. ROW_NUMBER, RANK, DENSE_RANK
7. LEAD, LAG
8. Running totals and moving averages
9. PARTITION BY vs GROUP BY
10. Solving real interview-level SQL problems
11. How to explain advanced SQL logic clearly in interviews
12. Performance and readability best practices

Who this session is for:

1. Data Analyst / Data Engineer aspirants
2. Working professionals preparing for SQL interviews
3. Anyone comfortable with basic SQL but struggling with advanced concepts

Session format:

1. 1:1 live session
2. Hands-on query writing
3. Interview-focused explanations
4. Doubt clearing based on your experience

By the end of the session, you’ll be able to confidently write and explain advanced SQL queries using CTEs and Window Functions.