将SQL Query转换为LINQ-to-SQL

Question

我需要帮助将SQL查询转换为LINQ to SQL

select top 5 customer_id, customer_name, product_id
from Customer 
Join Product on product_id = product_id
where (customer_active = 'TRUE')
order by checksum(newid())

如何在LINQ to SQL中执行此操作。感谢

Answer 1

这已经解决了。感谢'CodeNotFound'获得此答案 https://stackoverflow.com/a/43850748/1655774

db.Customer.Where(p => p.customer_active == true).Select(p => new CustomerViewModel
    {
         Customer_id= p.customer_id,
         Customer_name = p.customer_name,
         Product_id = p.Product.product_id
    }).OrderBy(c => SqlFunctions.Checksum(Guid.NewGuid())).Take(5).ToList();

Answer 2

试试这段代码

geopoints = args.getString("geoPoints");

Answer 3

你应该用这种方法来删除布尔条件并减少代码

如果你需要检查Ef中的bool条件

1.真实条件 db.Customer.Where（p =＆gt; p.customer_active）.select（m =＆gt; m）.tolist（）; 1.对于虚假条件 db.Customer.Where（p =＆gt;！p.customer_active）.select（m =＆gt; m）.tolist（）;

仅供建议