What is the purpose of if-else in MyBatis?

In MyBatis, the ifelse tag is used to dynamically generate SQL statements based on conditions. If the condition is met, the content inside the if tag will be executed; if the condition is not met, you can choose to execute the content inside the else tag or not perform any operation. This allows for dynamically generating different SQL statements based on different conditions, enabling more flexible query operations. Typically, the ifelse tag is used in conjunction with other tags, such as the where tag, set tag, etc., to achieve more complex SQL dynamic concatenation functionality.