Nhibernate 具有QueryOver的多个子查询
我需要帮助将此sql查询转换为QueryOver Nhibernate条件Nhibernate 具有QueryOver的多个子查询,nhibernate,queryover,Nhibernate,Queryover,我需要帮助将此sql查询转换为QueryOver Nhibernate条件 select distinct * from event e where e.name like '%req%' or e.Id in (select r.eventId from requirement r where r.name like '%req%') or e.Id in (select r.eventId from requirement r where r.id in (select s.requi
select distinct * from event e where e.name like '%req%'
or e.Id in (select r.eventId from requirement r where r.name like '%req%')
or e.Id in (select r.eventId from requirement r where r.id
in (select s.requirementId from solution s where s.name like '%sol%'))
var queryOver = session.QueryOver<Event>()
.Where(x => x.Name.IsInsensitiveLike("%"+searchTerms[1]+"%"))
.OrderBy(x => x.CreatedOn).Asc;
到目前为止,我有主查询,但找不到足够的关于如何添加子查询的参考资料。尚未成功使用joinQueryOver
事件与需求有一对多关系,需求与解决方案有一对多关系
Requirement reqAlias = null;
Solution solAlias = null;
var subQuery = QueryOver.Of<Event>()
.JoinAlias(x => x.Requirements, () => reqAlias)
.Where(x => x.Name.IsInsensitiveLike(searchTerms[2]))
.JoinAlias(() => reqAlias.Solutions, () => solAlias)
.Where(x => x.Name.IsInsensitiveLike(searchTerms[3]))
.Select(Projections.Group<Event>(x => x.Id));
var events = session.QueryOver<Event>()
.Where(x => x.Name.IsInsensitiveLike(searchTerms[1]))
.WithSubquery.WhereProperty(x => x.Id).In(subQuery)
.List().ToList();
仍然不起作用。当您使用IsInsensitiveLike NHibernate时,在解析后附加%并使用lower进行小写比较。在您的代码中,您自己添加了%1,这会导致
select distinct * from event e where e.name like %lower('%req%')%
这反过来也不起作用
此外,您有3个子查询,不是一个大的子查询,因此您需要重新构造代码以解决这一问题:
select r.eventId from requirement r where r.name like '%req%'
到
到
到
然后您需要使用限制来构造主查询。或者包含这3个查询。rae1n请查看上面的内容。我根据你的建议编辑了这个查询,但仍然不走运。我想我很难弄清楚是否包含子查询。如果涉及两个以上的表,您能给我举个例子说明如何编写子查询吗?谢谢,rae1n!这很有魅力。我不得不用HQL来做机翼,直到我有时间再做。。。
var firstQuery = QueryOver.Of<Requirement>()
.Where(r => r.Name.IsInsensitiveLike(searchTerms[2]))
.Select(r => r.EventId);
select s.requirementId from solution s where s.name like '%sol%'
var solutionQuery = QueryOver.Of<Solution>()
.Where(s => s.Name.IsInsensitiveLike(searchTerms[3]));
select r.eventId from requirement r where r.id
in (select s.requirementId from solution s where s.name like '%sol%')
var requirementQuery = QueryOver.Of<Requirement>()
.WithSubquery
.WhereProperty(r => r.Id).In(solutionQuery)
.Select(r => r.EventId);