mybatisplus and()

MyBatis Plus provides a convenient way to perform complex SQL queries using the `and` method. The `and` method is used to chain multiple conditions together in a query, creating an 'AND' relationship between them.

For example, if you have two conditions `condition1` and `condition2`, you can use the `and` method to combine them like this:

QueryWrapper<Entity> queryWrapper = new QueryWrapper<>();
queryWrapper.and(condition1).and(condition2);

This will generate a query that includes both conditions, connected by the 'AND' operator. You can continue chaining more conditions using the `and` method if needed.

Please note that the `and` method is just one of the many methods provided by MyBatis Plus for building complex queries. It offers a range of methods for conditions like `eq`, `ne`, `like`, `in`, etc., allowing you to build queries in a more expressive and readable way.