The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the …

Learn how to use the SQL `CASE` statement to implement conditional logic efficiently. Explore its syntax, use cases, best practices, and performance considerations.

Dec 10, 2024 · In this article, we'll learn the SQL CASE statement in detail, with clear examples and use cases that show how to leverage this feature to improve your SQL queries.

Nov 29, 2024 · CASE statements are a way to add if-then logic to SQL SELECT queries. They test conditions and return different values based on the results. This makes queries more …

Nov 18, 2025 · Aggregate expressions that appear in WHEN arguments to a CASE expression are evaluated first, then provided to the CASE expression. For example, the following query …

SQL just compares each WHEN to the original value and returns the matching THEN. Internally, both styles of CASE are evaluated the same way.

Oct 3, 2025 · We usually define a static condition or value, however, if you need to filter data based on different conditions, this can be done using SQL CASE in the WHERE clause. This …

Jul 22, 2025 · In this guide, we’ll walk through five of the best and most practical ways to use CASE WHEN in SQL queries, paired with clear examples and real-world applications. What Is …

In this case, we define three conditions using the WHEN keyword. If an employee's salary is less than 50,000, the query returns 'Low'. If the salary is between 50,000 and 80,000, the query …

Jul 14, 2025 · In this quick guide, you’ll explore how to use CASE to implement branching logic in your queries. We’ll cover its two forms, show real-world use cases, and explain where and …