Episode 4 - Value Modification

In this video, I focused on modifying and managing data inside database tables. I explored how to insert new records, work with NULL values, update existing data, and delete records using SQL statements.

I also looked into range filtering techniques to retrieve specific sets of data efficiently, along with an important safety concept: the danger of using UPDATE statements without a WHERE condition.

The goal was to understand how database values are maintained, corrected, and filtered in real business scenarios such as fixing data entry mistakes and managing inventory updates.

For learning, I used W3Schools to understand the fundamentals, followed practical examples and explanations, and implemented everything in MySQL Workbench. I also completed W3Schools quizzes to reinforce the concepts.

Learning References:
• W3Schools – for core syntax and quizzes
• Bro Code – for practical SQL walkthroughs

If you notice any improvements or better approaches, feel free to share.

#SQL #LearningSQL #MySQL #DatabaseManagement #SQLUpdate #InsertInto #DeleteSQL #SQLFiltering #BuildInPublic

Видео Episode 4 - Value Modification канала AshStudy Lab