如何使用Android Room运行多个和查询？

// 定义实体类
@Entity(tableName = "users")
public class User {
    @PrimaryKey
    public int id;
    public String name;
    public int age;
}

// 创建数据访问对象（DAO）
@Dao
public interface UserDao {
    @Query("SELECT * FROM users")
    List<User> getAllUsers();

    @Query("SELECT * FROM users WHERE age > :minAge")
    List<User> getUsersOlderThan(int minAge);

    @Insert
    void insertUser(User user);
}

// 创建数据库
@Database(entities = {User.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {
    public abstract UserDao userDao();
}

// 初始化数据库
AppDatabase db = Room.databaseBuilder(getApplicationContext(), AppDatabase.class, "my-database")
        .build();

// 执行查询操作
List<User> allUsers = db.userDao().getAllUsers();
List<User> olderUsers = db.userDao().getUsersOlderThan(30);