In this video, we will learn one of the most important SQL concepts used in Data Engineering and Analytics – Window Functions.
I will clearly explain the difference between:
ROW_NUMBER()
RANK()
DENSE_RANK()
with simple examples so that beginners can easily understand how these ranking functions work in SQL.
These functions are frequently asked in SQL Interviews for Data Engineer, Data Analyst, and Big Data roles.
Topics Covered:
• What are Window Functions
• ROW_NUMBER() explained with example
• RANK() explained with example
• DENSE_RANK() explained with example
• Difference between ROW_NUMBER, RANK and DENSE_RANK
• SQL Interview Questions
This tutorial is useful for:
• Data Engineers
• Data Analysts
• SQL Beginners
• Big Data Developers
• Anyone preparing for SQL Interviews
Subscribe to the channel "DataFuture" for more videos on:
SQL
PySpark
Data Engineering
Big Data
Interview Preparation
#SQL #WindowFunctions #RowNumber #Rank #DenseRank #DataEngineering #SQLInterviewQuestions #DataFuture #dataanalytics #datascience
