When it comes to SQL-based big data technologies, Hive and Presto are two popular solutions that often get compared. While both offer distributed query engines, their implementation details differ significantly, especially when it comes to functions. In this article, we dive into some of the most common functions used in both systems, explore their differences, and highlight potential pitfalls that developers should be aware of. Whether you're a seasoned data professional or a beginner, this article is a great starting point for understanding the similarities and differences between Hive and Presto SQL.