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));
         }