PostgreSQL Functions Explained: Create, Call & Manage Functions | Dev Portal
Welcome back to Dev Portal.
In this tutorial, we’ll dive deep into Functions in PostgreSQL. It is a powerful feature for data manipulation, business logic implementation, and custom calculations.
Whether you are a beginner or experienced developer, this tutorial will help you understand how to use PostgreSQL functions effectively.
In this video, we’ll explore:
Difference Between Functions & Procedures
How to Create Functions in PostgreSQL
Calling Functions Using SQL
Functions with Multiple Parameters
Returning Tables from Functions
Modifying & Dropping Functions
Real-World Use Cases of PostgreSQL Functions
GitHub Repo with Sample Code: https://github.com/nakulmitra/databas...
Timestamps:
00:00 - Introduction
00:28 - Functions vs. Procedures Recap
01:08 - Basic Syntax of Functions in PostgreSQL
01:57 - Creating a Function (Example: Annual Salary Calculation)
03:07 - Calling Functions Using SQL Queries
04:20 - Functions with Multiple Parameters (Example: Bonus Calculation)
05:22 - Functions Returning Tables (Example: Employees with High Salary)
09:55 - Modifying & Dropping Functions in PostgreSQL
13:09 - Use Cases & Best Practices for Functions
14:29 - Summary & Next Steps
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