增加国别的表和查询接口

yangys

2024-03-05 b542d4ff172d61e14a0c9428a82cf77bd4119498

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package com.qianwen.mdc.mapper;
 
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.qianwen.mdc.domain.MachineCountry;
 
public interface MachineCountryMapper extends BaseMapper<MachineCountry> {
    
}