:Linq에은 - 아래의 LINQ에-SQL 쿼리, 현재 결과 정확한 관계 부문
NotSupportedException이는 로컬 시퀀스는이 연산자를 포함 제외한 쿼리 연산자의 SQL 구현에 LINQ에서 사용할 수 없습니다.
linq에서 정확한 관계 구분 필터를 수행하는 일반적인 방법은 linq to SQL을 사용할 때 사용할 수 없습니다.
아래 쿼리에서 제공된 범위의 ID가없는 레코드를 제외하기 위해 Except 절을 사용하는 두 가지 시도가 있습니다.
저장 프로 시저를 사용하거나 반환 된 목록에서 추가 필터를 연기하는 Expect 필터를 사용하도록 변경하는 것 외에 수행해야 할 작업을 알고있는 사람이 있습니까?
List<int> additionalServiceIDs = new List<int>(){40,42};
List<int> establishmentIDs = new List<int>() {};
List<int> additionalNeedsIDs = new List<int>(){};
bool advertisedOnly = true;
bool Internal = true;
string providerTypeCode = "";
List<string> settingTowns = new List<string>() {};
var sqlResultsList = (from p in Providers
join po in ProviderOverviews on p.ReferenceNumber equals po.FK_Provider_ReferenceNumber into p_po
from p_po_LeftOuter in p_po.DefaultIfEmpty() // left outer join
join ad in AdditionalServices on p.ReferenceNumber equals ad.FK_Provider_ReferenceNumber into p_ad
from p_ad_LeftOuter in p_ad.DefaultIfEmpty() // left outer join
join sp in SchoolPickUps on p.ReferenceNumber equals sp.FK_Provider_ReferenceNumber into p_sp
from p_sp_LeftOuter in p_sp.DefaultIfEmpty() // left outer join
join an in AdditionalNeeds on p.ReferenceNumber equals an.FK_Provider_ReferenceNumber into p_an
from p_an_LeftOuter in p_an.DefaultIfEmpty() // left outer join
join il in Inspections on p.ReferenceNumber equals il.FK_Provider_ReferenceNumber into p_il
from p_il_LeftOuter in p_il.DefaultIfEmpty() // left outer join
join sl in SchoolLists on p_sp_LeftOuter.FK_SchoolList_SchoolID equals sl.SchoolID into sp_sl
from sp_sl_LeftOuter in sp_sl.DefaultIfEmpty() // left outer join
join nl in NeedLists on p_an_LeftOuter.FK_NeedsList_ID equals nl.ID into an_nl
from an_nl_LeftOuter in an_nl.DefaultIfEmpty() // left outer join
join svl in ServiceLists on p_ad_LeftOuter.FK_ServiceList_ID equals svl.ID into ad_svl
from ad_svl_LeftOuter in ad_svl.DefaultIfEmpty() // left outer join
join ptl in ProviderTypeLists on p.FK_ProviderTypeList_ID equals ptl.ID
where
(string.IsNullOrEmpty(providerTypeCode) || ptl.Code.ToLower() == providerTypeCode)
&&
p.Advertise == advertisedOnly
&&
(settingTowns == null || settingTowns.Count == 0 || settingTowns.Contains(p.SettingTown.ToLower())) // allow for no parameters being passed
&&
(establishmentIDs == null || establishmentIDs.Count == 0 || establishmentIDs.Contains(p_sp_LeftOuter.FK_SchoolList_SchoolID)) // allow for no parameters being passed
&&
(Internal == true || p.RegistrationStatus == "ACTV")// if internal = false then add filter .. RegistrationStatus = 'ACTV'
&&
(additionalServiceIDs == null || additionalServiceIDs.Count == 0 ||
!(AdditionalServices.Where(ads => p.ReferenceNumber == ads.FK_Provider_ReferenceNumber).Select(ad => ad.FK_ServiceList_ID).Except(additionalServiceIDs).Any())
) // *ONLY* records that match the provided list of additionalServiceIDs, no more - no less (aka. Exact Relational Division)
&&
(additionalNeedsIDs== null || additionalNeedsIDs.Count == 0 ||
!(AdditionalNeeds.Where(adn => p.ReferenceNumber == adn.FK_Provider_ReferenceNumber).Select(an => an.FK_NeedsList_ID).Except(additionalNeedsIDs).Any())
) // *ONLY* records that match the provided list of additionalServiceIDs, no more - no less (aka. Exact Relational Division)
select new // anonymous type
{
SettingTown = p.SettingTown,
ProviderTypeCode = ptl.Code,
ProviderName = p.ProviderName,
PublishedAddress = p_po_LeftOuter.PublishedAddressLocation,
Vacancies = p_po_LeftOuter.Vacancies,
VacancyMemo = p_po_LeftOuter.VacancyMemo,
PublishedPhone = p_po_LeftOuter.PublicPhone,
PublishedEmail = p_po_LeftOuter.PublicEmail,
Website = p_po_LeftOuter.Website,
AdditionalNeed = an_nl_LeftOuter.Description,
AdditionalNeedID = (int?)an_nl_LeftOuter.ID,
AdditionalService = ad_svl_LeftOuter.Description,
AdditionalServiceID = (int?)ad_svl_LeftOuter.ID,
CostPerDay = p_po_LeftOuter.CostPerDay,
CostPerHour = p_po_LeftOuter.CostPerHour,
CostPerSession = p_po_LeftOuter.CostPerSession,
Hours = p_po_LeftOuter.Hours,
InspectionOverallJudgement = p_il_LeftOuter.InspectionOVerallJudgement,
ReferenceNumber = p.ReferenceNumber,
ServiceDescription = p_po_LeftOuter.ServiceDescription,
SchoolPickUp = sp_sl_LeftOuter.SchoolName,
Under5 = p_po_LeftOuter.Under5,
Over5 = p_po_LeftOuter.Over5,
PublicTransport = p_po_LeftOuter.PublicTransport,
}).ToList();
거의. 난 그냥 계산에 제한을 추가해야했습니다. – Terry
좋아요, 방금 당신의'.Except()'를'.Contains()'로 번역하려했습니다. 원래 LINQ에 추가 필터가 필요한지 여부를 모릅니다. – har07