MyBatis Tag Guide: Purpose & Dynamic SQL

In MyBatis, the if tag is used to perform conditional logic in SQL statements. By using the if tag, it is possible to dynamically concatenate SQL statements based on a certain condition, allowing for more flexible data operations. For example, different SQL statements can be generated dynamically based on user input parameters, enabling dynamic data querying and updating. The use of if tags can enhance the readability and maintainability of SQL statements, while also improving system performance and flexibility.