Mybatis-Plus 实战完整学习笔记(十)------条件构造器核心用法大全（下）

31、升序orderByAsc

 31、升序orderByAsc

        List<Employee> employeeList = employeeMapper.selectList(new QueryWrapper<Employee>().orderByAsc(true,"age"));



        if (!employeeList.isEmpty()) {
            logger.info("++条件构造器查询员工信息+++++" + gson.toJson(employeeList));
        }

32、降序orderByDesc

 32、降序orderByDesc
        List<Employee> employeeList = employeeMapper.selectList(new QueryWrapper<Employee>().orderByDesc(true,"age"));

        
        if (!employeeList.isEmpty()) {
            logger.info("++条件构造器查询员工信息+++++" + gson.toJson(employeeList));
        }

33、回显字段设置

33、回显字段设置 
//            SELECT last_Name,email FROM tbl_employee
        List<Employee> employeeList = employeeMapper.selectList(new QueryWrapper<Employee>().select("last_Name,email"));





        if (!employeeList.isEmpty()) {
            logger.info("++条件构造器查询员工信息+++++" + gson.toJson(employeeList));
        }