Aprenda SQL do ZERO (CASE WHEN) | Curso Básico – Parte 3

Learn CASE WHEN in SQL in a simple way with practical examples. 📝 In this third lesson of the SQL from Zero course, you will understand how to create new columns, sort information, and transform data during a query using one of the most useful SQL commands. If you are starting out in the data field, this is a skill that frequently appears in analyses, dashboards, and real-world projects. 🚀 📌 What you will learn: ✅ What is CASE WHEN and how it works ✅ How to create custom classifications in SQL ✅ How to use multiple conditions with WHEN ✅ When to use (or not use) ELSE ✅ How to combine CASE WHEN with GROUP BY and COUNT ✅ Best practices for writing more organized and readable queries 📥 Class material + exercises: https://forms.gle/f5egrprPZUgB5QcJ8 📚 Complete SQL Course Playlist:    • SQL e Banco de Dados   ⚠️ SQL is not about memorizing commands. 👉 You need to interpret, classify, and prepare this information to generate meaningful analyses. 💻 Where to practice SQL (for free): • Programiz SQL: https://www.programiz.com/sql/online-... • W3Schools: https://www.w3schools.com/sql • SQLite Online: https://sqliteonline.com/ 👉 All allow you to practice directly in your browser. ⏱️ Video Index: 00:00 Introduction 00:12 Course Review and Playlist 01:40 What is CASE WHEN? 02:30 Understanding the syntax 05:05 Example 1 – Simple sorting 09:07 Example 2 – Multiple conditions 12:55 Example 3 – Without ELSE 15:20 Example 4 – CASE WHEN + GROUP BY + COUNT 19:11 Example 5 – Decoding 22:47 Best practices and review 🔔 Subscribe to the channel If you want to learn SQL and Data Analysis in practice, subscribe to the channel and follow the complete series. #sql #database #dataanalysis #dataanalytics #programming #dataanalyst