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Introduction to SQL (Computer Science)
Video Tutorial - Beginner youtube.com
PostgreSQL SQL
In this Introduction to SQL Course, you will learn the essential queries needed to work with a relational database: How to create data (INSERT), change existing data (UPDATE), and find data (SELECT and JOINs). You will also learn how to choose a database, install PostgreSQL, speed up queries with indexes, and more.
Tutorial - Beginner thevalleyofcode.com
Beginner
Video Tutorial - Beginner youtu.be