我想要获取OneToMany关系中的特定行。获得订单中最便宜的商品
示例:
public class Order {
@Id
@Column(name = "ORDER_ID")
private Long id;
???
private Item cheapestItem;
}
public class Item {
@Id
@Column(name = "ITEM_ID")
private Long id;
private Long price;
}
我该怎么做呢?
import time
import os
import subprocess
from selenium import webdriver
def aval():
driver = webdriver.Chrome()
driver.get("webpage")
try:
while True:
driver.find_element_by_xpath('xpath')
time.sleep(5)
print("out of stock
我需要帮助创建一个lambda表达式来查询下面的列表,以检索每个渠道中最低价格的商品。Ie对于本例项目A、D和G
class Radio
{
public string Name { get; set; }
public int Channel { get; set; }
public decimal Price { get; set; }
}
List<Radio> radios = new List<Radio>();
radios.Add(new Radio() { Name = "A", Channel = 1, Pri