SQL FIRST_VALUE & LAST_VALUE Analytical Functions Explained | Hands-on Examples | Window Functions
Learn *SQL FIRST_VALUE()* and *LAST_VALUE()* analytical (window) functions with easy-to-understand, hands-on examples.
In this video, you'll learn how these powerful SQL window functions work, when to use them, and common mistakes developers make while using **LAST_VALUE()**, especially with the default window frame.
🚀 In this video you'll learn:
✅ What are SQL Analytical (Window) Functions?
✅ FIRST_VALUE() Syntax and Examples
✅ LAST_VALUE() Syntax and Examples
✅ PARTITION BY Explained
✅ ORDER BY in Window Functions
✅ Window Frame (ROWS BETWEEN...) Explained
✅ Why LAST_VALUE() Often Gives Unexpected Results
✅ Real-world Business Use Cases
✅ Interview Questions on FIRST_VALUE & LAST_VALUE
Whether you're preparing for **SQL interviews**, improving your database skills, or working with PostgreSQL, Oracle, SQL Server, MySQL 8+, or Snowflake, this tutorial will help you master these important analytical functions.
📌 Perfect for:
SQL Beginners
Database Developers
Data Analysts
Data Engineers
BI Developers
Interview Preparation
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