Many people, accustomed to other programming languages, wonder how to replicate the classic statement IF ELSE IF in SQL. The answer is that SQL doesn't have a direct command with that name, but it offers an even more powerful and elegant solution: the expression CASE WHEN . This is the standard, universal solution for handling multiple conditions directly in your queries. Along with CASE, some dialects, such as T-SQL and MySQL, also offer more concise shortcuts such as IIF() and IF() for simpler cases. Why conditional logic is a superpower in SQL Imagine having to segment customers by spending categories, assign different priorities to support tickets based on urgency, or label products based on seasonality. You’d want to do all of this directly in the database, without having to export the data and process it elsewhere, right? This is exactly what makes conditional logic in SQL so powerful. It’s that single line of code that transforms a simple data query into a full-fledged business analysis.…