[英]Convert SQL query to Nhibernate Criteria
我的SQL查询:
select [CompanyId]
from dbo.Bussiness_Company
where [BussinessId] in (11,12,13)
group by [CompanyId]
having COUNT(distinct [BussinessId])=3
说明:我有一张Bussiness_Company表:
业务_公司
ID*
BussinessId
公司编号
ID ---------业务ID ------------公司ID
1 ---------- 10 --------------------- 100
2 ---------- 11 --------------------- 100
3 ---------- 12 --------------------- 100
公司编号
100
喜爱:
DetachedCriteria detachedCriteria = DetachedCriteria.For<BussinessCompany>();
detachedCriteria.SetProjection(Projections.Property("Company"));
detachedCriteria.SetProjection(Projections.GroupProperty("Company"));
Disjunction disjunction = Restrictions.Disjunction();
foreach (Bussiness bussiness in list)
{
disjunction.Add(Restrictions.Eq("Bussiness", bussiness ));
} detachedCriteria.Add(disjunction).Add(Restrictions.Eq(Projections.CountDistinct<BussinessCompany>(m => m.Bussiness), list.Count));
IList<Sonomi.Core.BusinessObjects.Bussiness> bussiness =
bussinessUnitManager.CreateCriteria().Add(Subqueries.PropertyIn("Id", detachedCriteria)).List
<Sonomi.Core.BusinessObjects.BussinessUnit>();
dgrCer.DataSource = bussiness;
dgrCer.DataBind();
您可以尝试这样的QueryOver代码:
var bussinessIdCount = 3;
var bussinessIds = new[] { 11, 12, 13 };
Bussiness_Company bussinessCompany = null;
session.QueryOver(() => bussinessCompany)
.WhereRestrictionOn(() => bussinessCompany.BussinessId).IsIn(bussinessIds)
.Select(Projections.Group(Projections.Property(() => bussinessCompany.CompanyId)))
.Where(Restrictions.Gt(Projections.CountDistinct(() => bussinessCompany.BussinessId), bussinessIdCount));
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