SELECT data from Multiple Tables in SQL

In SQL, selecting data from multiple tables is a common requirement when working with relational databases. This video explores various techniques to efficiently retrieve and combine data, such as using JOINs, UNION, and Subqueries. These methods are essential for organizing and managing data across multiple entities, helping users make data-driven decisions.

We discussed different types of SQL joins, such as INNER JOIN, and how to use UNION to merge result sets while eliminating duplicates. Additionally, the article explains how to use subqueries for nested queries and how to aggregate data with GROUP BY after performing joins. Understanding these techniques ensures that SQL queries are optimized for complex data retrieval and performance.

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