Master SQL Window Functions & Subqueries | Data Engineering Interview Prep| June Batch DE Roadmap #5

Welcome to Session 5 of the June Batch - Data Engineering Course 🚀

In this session, we cover some of the most important and frequently asked SQL interview concepts — Window Functions and Subqueries.

🔹 What you will learn:

📌 Window Functions in SQL
- ROW_NUMBER()
- RANK() & DENSE_RANK()
- LEAD() & LAG()
- PARTITION BY
- ORDER BY in Window Functions

📌 Subqueries in SQL
- What are Subqueries?
- Single Row vs Multiple Row Subqueries
- Nested Queries
- Real-world interview examples

📌 Real Interview Use Cases
- Ranking problems
- Duplicate handling
- Top N records
- Department-wise salary analysis

🎯 This session is highly important for:
- SQL Interview Preparation
- Data Engineering Interviews
- Real-world SQL problem solving

🚀 Upcoming Sessions:
- Joins Deep Dive
- Complex SQL Scenarios
- Real-time SQL Interview Questions

👉 Subscribe for the complete Data Engineering roadmap.

#SQL #WindowFunctions #Subqueries #DataEngineering #SQLInterviewQuestions #BigData

Видео Master SQL Window Functions & Subqueries | Data Engineering Interview Prep| June Batch DE Roadmap #5 канала PathNex - Shaping Careers