simple_order_demo/src/main/java/com/example/demo/repository/DiancanDetailRespository.java

package com.example.demo.repository;

import com.example.demo.model.DiancanDetail;
import org.springframework.data.jpa.repository.JpaRepository;

public interface DiancanDetailRespository extends JpaRepository<DiancanDetail,Long> {
    int deleteByZhuohao(String zhuohao);
}