SQL FIRST_VALUE & LAST_VALUE Analytical Functions Explained | Hands-on Examples | Window Functions

Publicado em: 06 Julho 2026
no canal de: Advanced Tech Tutor (ATT)
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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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#SQL #WindowFunctions #FIRSTVALUE #LASTVALUE #SQLTutorial #Database #DataAnalytics


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