Unknown column ‘d‘ in ‘field list‘

package dao;

import org.apache.ibatis.session.SqlSession;
import org.junit.Test;
import pojo.User;
import utils.MybatisUtils;

import java.util.List;

public class UserDaoTest {
    
    @Test
    public void test(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        UserDao mapper = sqlSession.getMapper(UserDao.class);
        List userList = mapper.getUserList();
        for (User user : userList) {
            System.out.println(user);
        }
        sqlSession.close();

    }
    @Test
    public void adduser(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        UserDao mapper = sqlSession.getMapper(UserDao.class);
        mapper.insertdata(new User(7, "'事实上'", "6"));
        sqlSession.commit();
        sqlSession.close();
    }
}

在数据库设置单元为字符串时，输入需要带“”

若字符串中要输入字母，还要单独使用‘’