我有以下查询工作,它获得我想要的结果:
int associatedId = 123;
MyObject alias = null;
var subQuery = QueryOver.Of<DatabaseView>()
.Where(view => view.AssociatedId == associatedId)
.And(view => view.ObjectId == alias.ObjectId)
.Select(view => view.ObjectId);
var results = session.QueryOver<MyObject>(() => alias)
.WithSubquery.WhereExists(subQuery)
.List();
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DatabaseView已被映射为实际的NHibernate实体(因此我可以将它与QueryOver一起使用),但它与HBM映射中的MyObject无关.
此查询使用SELECT ... FROM MyObject WHERE EXISTS(此处为DatabaseView的子查询)返回IList.如何重新编写此信息以返回相同的信息,而不是使用JOIN?