SQL lecture - 16 | MySQL Stored Function | NMD PVT LTD
Mastering MySQL Stored Functions: Enhance Your SQL Skills!
In this video, we explore MySQL Stored Functions, a powerful feature that allows you to encapsulate reusable logic within the database. Unlike stored procedures, stored functions return a single value and can be used directly in SQL queries.
1️⃣ What Is a Stored Function?
✅ A Stored Function is a reusable SQL block that returns a single value.
✅ It accepts input parameters and performs calculations or transformations.
✅ Unlike stored procedures, it must return a value.
2️⃣ Why Use Stored Functions?
🚀 Simplify complex calculations by defining them once and reusing them.
🚀 Enhance query readability by replacing repetitive logic.
🚀 Improve performance by executing logic inside the database instead of the application.
🚀 Use functions in SELECT, WHERE, HAVING, and other SQL clauses.
3️⃣ Use Case Examples:
🔹 Calculate the total price after tax for each order.
🔹 Convert temperature from Celsius to Fahrenheit.
🔹 Format names (e.g., concatenate first and last names).
🔹 Generate custom discount percentages based on sales data.
📌 What You’ll Learn in This Video:
🔹 How to create and use stored functions in MySQL.
🔹 The differences between stored procedures and stored functions.
🔹 Best practices for designing efficient and reusable functions.
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