![Vertabelo Academy Blog | 18+ Best Online Resources for Learning SQL and Database Concepts (2020 revision) Vertabelo Academy Blog | 18+ Best Online Resources for Learning SQL and Database Concepts (2020 revision)](https://academy.vertabelo.com/blog/18-best-online-resources-for-learning-sql-and-database-concepts/w3schools.jpg)
Vertabelo Academy Blog | 18+ Best Online Resources for Learning SQL and Database Concepts (2020 revision)
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The logic behind the ALL function from SQL. I need some explanation behind the logic of W3 School statement regarding ALL function - Stack Overflow
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