CASE WHEN trong SQL: Ứng dụng trong tối ưu hóa truy vấn

The CASE WHEN statement in SQL is a versatile tool that empowers you to incorporate conditional logic directly into your queries. This functionality proves particularly valuable when you need to manipulate or categorize data based on specific conditions, ultimately enhancing the flexibility and analytical capabilities of your SQL queries.

The CASE WHEN statement in SQL is an indispensable tool for enhancing the flexibility and analytical power of your queries. By mastering its usage, you gain the ability to perform conditional logic, data manipulation, and aggregation directly within your SQL statements, streamlining your data retrieval and analysis processes.