简单的js上有点奇怪的问题

Question

我在一个简单的脚本上遇到了一些问题 它仅在两个上应用className一次。 这是我的代码。感谢所有社区的进步，请原谅法国人的英语不好:-)！

select Suppliers.SupplierID, CompanyName from Suppliers
inner join Products on
Products.SupplierID = Suppliers.SupplierID
where Discontinued = 1
and Products.SupplierID not in
(select SupplierID from Products where Discontinued = 0)
group by Suppliers.SupplierID, CompanyName