-- INNER Join = Fetches only matching records in both tables based on the JOIN condition. --Fetch the employee name & the department name they belong to. So only the records which is present in both ...
Follow this step-by-step guide to install PostgreSQL, load data, connect to a database, and execute SQL queries including table joins PostgreSQL is an open-source, object-relational (also called ...
Module 1: Prerequisites & Basics of SQL, perfect for beginners who want to learn SQL from scratch — especially focusing on foundations needed for understanding SQL JOINs later. Module 1: Prerequisites ...
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