wang-hao-jie
2021-12-14 0c0a751f2e1abac46b506697096cc3b2a5b54510
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package cn.exrick.xboot.your.mapper;
 
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import cn.exrick.xboot.your.entity.Customer;
import org.apache.ibatis.annotations.Select;
 
import java.util.List;
 
/**
 * 商户表数据处理层
 * @author zhangzeli
 */
public interface CustomerMapper extends BaseMapper<Customer> {
 
    @Select("select count(id) from t_customer")
    int count();
}