Distinct on one column in linq with joins - linq

Question

I know we can get distinct on one column using following query:
I know we can get distinct on one column using following query:
SELECT *
FROM (SELECT A, B, C,
ROW_NUMBER() OVER (PARTITION BY B ORDER BY A) AS RowNumber
FROM MyTable
WHERE B LIKE 'FOO%') AS a
WHERE a.RowNumber = 1
I have used similar sql query in my case where i am joining multiple tables but my project is in mvc4 and i need linq to entity equivalent of the same. Here is my code:
select * from
(
select fp.URN_No,
ROW_NUMBER() OVER
(PARTITION BY pdh.ChangedOn ORDER BY fp.CreatedOn)
as num,
fp.CreatedOn, pdh.FarmersName, pdh.ChangedOn, cdh.Address1, cdh.State, ich.TypeOfCertificate, ich.IdentityNumber, bdh.bankType, bdh.bankName,
pidh.DistrictId, pidh.PacsRegistrationNumber, idh.IncomeLevel, idh.GrossAnnualIncome
from MST_FarmerProfile as fp inner join PersonalDetailsHistories as pdh on fp.personDetails_Id = pdh.PersonalDetails_Id
inner join ContactDetailsHistories as cdh on fp.contactDetails_Id = cdh.ContactDetails_Id
inner join IdentityCertificateHistories as ich on fp.IdentityCertificate_Id = ich.IdentityCertificate_Id
inner join BankDetailsHistories as bdh on fp.BankDetails_Id = bdh.BankDetails_Id
left join PacInsuranceDataHistories as pidh on fp.PacsInsuranceData_Id = pidh.PacsInsuranceData_Id
left join IncomeDetailsHistories as idh on fp.IncomeDetails_Id = idh.IncomeDetails_Id
where URN_No in(
select distinct MST_FarmerProfile_URN_No from PersonalDetailsHistories where MST_FarmerProfile_URN_No in(
select URN_No from MST_FarmerProfile where (CreatedOn>=#fromDate and CreatedOn<= #toDate and Status='Active')))
)a where a.num=1

Answer 1

Use this linq query after getting result from sql. p.ID is be your desire distinct column name
List<Person> distinctRecords = YourResultList
.GroupBy(p => new { p.ID})
.Select(g => g.First())
.ToList();