wang-hao-jie
2021-12-09 fdeaff15619f5f2e851f74f7b5e2b203b157856d
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package cn.exrick.xboot.your.mapper;
 
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import cn.exrick.xboot.your.entity.UserStatistic;
import org.apache.ibatis.annotations.Select;
 
import java.util.List;
 
/**
 * 用户统计表数据处理层
 * @author whj
 */
public interface UserStatisticMapper extends BaseMapper<UserStatistic> {
 
    @Select("select sum(driving) from t_user_statistic")
    int sumDriving();
}