Question

我有一个令人困惑的问题。我的查询是这样的;

insert into simple_products
(Product_Id,attribute,quantity,Barcode) 
values ((select id from products where sku='180 JK101G' and attribute='4621'),26,2,1068215)
ON DUPLICATE KEY UPDATE 
attribute=values(attribute),
quantity=values(quantity),
Barcode=values(Barcode)

但有时子查询什么都不返回。所以我想做什么，但我找不到任何解决方案。

有没有办法呢？

Answer 1

您正在寻找insert ... select

insert 
  into simple_products (Product_Id, attribute, quantity, Barcode)        

       select id, 26, 2, 1068215 
         from products 
        where sku='180 JK101G' 
          and attribute='4621'

    on duplicate key update
       attribute=values(attribute),
       quantity=values(quantity),
       Barcode=values(Barcode);

Answer 2

感谢@IvanM

解决了这个问题

    insert into simple_products (Product_Id,attribute,quantity,Barcode) 
select id,26 as a,2 as b ,1068215 as c from products where sku='180 JK101G' and attribute='4621' 
ON DUPLICATE KEY UPDATE attribute=values(attribute), quantity=values(quantity), Barcode=values(Barcode)

Mysql插入，重复键更新与子查询null问题

2 个答案: