Common Table Expressions - CTEs in PostgreSQL || How to Write CTEs || Po...

In this video, we dive deep into Common Table Expressions (CTEs) in PostgreSQL — a powerful feature that helps you write cleaner, more modular, and efficient SQL queries.

Whether you're a beginner exploring PostgreSQL or an advanced user refining your skills, this tutorial covers everything you need to know about WITH queries, including:

• ✅ What is a CTE?

• ✅ Syntax and structure

• ✅ Benefits of using CTEs

• ✅ Simple CTEs for temporary data sets

• ✅ Recursive CTEs for generating sequences or traversing hierarchies

• ✅ Data-Modifying CTEs using INSERT, UPDATE, and DELETE

• ✅ Using CTEs with JOINs to simplify complex multi-table queries

• ✅ Materialization and performance tips

You'll see real-time PostgreSQL examples that demonstrate how CTEs can be applied to real-world scenarios like summarizing data, cleaning up subqueries, and chaining modifications.

📌 This video is part of our PostgreSQL Full Playlist, where we guide you step-by-step from basic concepts to advanced performance optimizations.

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