Question
I am trying to join 3 tables in a query with Linq to get data from all 3 tables. Below is an image of the table schemes:
The query should select: SewagePlantName, CompanyName and Duty
In addition I need to restricts the SewagePlantId to a list of Ids that are given as:
var sewagePlantIds = UnitOfWork.GetAll<UserGroup>()
.Where(group => group.Id == webAppPrincipal.GroupId)
.SelectMany(group => group.SewagePlantId).Select(sewageplant => sewageplant.Id).ToList();
I have difficulties with the order of joining the 3 tables and where/how to restrict the SewagePlantId to the given list.
Accepted Answer
Can you try something similar to it please for joining part
from d in Duty
join c in Company on d.CompanyId equals c.id
join s in SewagePlant on c.SewagePlantId equals s.id
select new
{
duty = s.Duty.Duty,
CatId = s.Company.CompanyName,
SewagePlantName=s.SewagePlant.SewagePlantName
// other assignments
};
Popular Answer
var obj = from trns in context.tblPartyRegistrations
join st in context.tblSellingTrans
on trns.PartyRegId equals st.Fk_PartyRegId
join pt in context.tblPartyRemainings
on trns.PartyRegId equals pt.fk_PartyId
select new
{
trns.Name,
trns.PhoneNo,
trns.Address,
st.RecivedAmount,
st.Date,
st.CustomerType,
st.MilkRate,
st.Mltr,
st.Mkg,
st.NtAmnt,
st.RemaningAmount,
pt.Remainingammount
};
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