我有以下表格(简化):
Product(Id, Name)
OrderItem(Id, ProductId)
...映射到以下类:
Product {Id, Name}
OrderItem {Id, Product (many-to-one)}
我需要(N)Hibernate语法来检索Orders中出现的产品 SQL将类似于:
select *
from Product
where exists (
select *
from OrderItem
where OrderItem.ProductId = Product.Id)
如何创建标准?
答案 0 :(得分:3)
事实证明这很容易......
var query = session.CreateQuery(
"select distinct oi.Product from OrderItem oi");
return query.List<Product>();