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Я хочу, чтобы получить следующий запрос с использованием QueryOverПочему Projections.SubQuery испортил остальную часть запроса?
select
cg.CoverageGrpId,
SUM(cp.PremiumDueAmt) + SUM(cf.PremiumDueAmt) as TotalPremium,
SUM(pa.PaymentAllocAmt) as AllocatedAmount, p.ClientPolicyId,
(SELECT MAX(c2.CvrgExpDt) FROM Coverage c2 where c2.CoverageGrpId = cg.CoverageGrpId) as CoverageExpDate,
(SELECT MIN(c3.CvrgEffDt) FROM Coverage c3 where c3.CoverageGrpId = cg.CoverageGrpId) as CoverageEffDate
from dbo.vw_D_CoverageGroup cg
inner join dbo.vw_D_Batch b on b.PremCvrgBatchId = cg.PremCvrgBatchId
inner join dbo.vw_D_ClientPolicy p on p.ClientPolicyId = cg.ClientPolicyId
inner join dbo.vw_D_Bid bd on bd.BidId = p.BidId
inner join dbo.vw_D_CoverageGroupRow cgr on cgr.CoverageGrpId = cg.CoverageGrpId
inner join dbo.vw_D_Coverage c on c.CoverageGrpRowId = cgr.CoverageGrpRowId
left outer join dbo.vw_D_CoveragePremium cp on c.CoverageId = cp.CoverageId
left outer join dbo.vw_D_CoverageFee cf on cf.CoverageId = cp.CoverageId
left outer join dbo.vw_D_PaymentAllocation pa on pa.CoverageGrpId = cg.CoverageGrpId
where c.PrimaryInsuredId = 701112800 and b.BatchTypeCd = 'INDV'
group by cg.CoverageGrpId, p.ClientPolicyId
order by cg.CoverageGrpId, p.ClientPolicyId
Ниже QueryOver что испортится, когда я добавить комментировал часть.
var dto = new InsuredCoveragePayments();
Coverage coverage = null;
CoverageGroup coverageGroup = null;
CoverageGroupRow coverageGroupRow = null;
Batch batch = null;
PaymentAllocation paymentAllocation = null;
CoveragePremium coveragePremium = null;
CoverageFee coverageFee = null;
ClientPolicy clientPolicy = null;
Bid bid = null;
var l = _session.QueryOver<CoverageGroup>(() => coverageGroup)
.JoinAlias(cg => cg.Batch,() => batch)
.JoinAlias(cg => cg.ClientPolicy,() => clientPolicy)
.JoinAlias(cg => clientPolicy.Bid,() => bid)
.JoinAlias(cg => cg.PaymentAllocations,() => paymentAllocation, JoinType.LeftOuterJoin)
.JoinQueryOver(cg => cg.CoverageGroupRows,() => coverageGroupRow)
.JoinQueryOver(cgr => cgr.Coverages,() => coverage)
.JoinAlias(c => c.Premium,() => coveragePremium, JoinType.LeftOuterJoin)
.JoinAlias(c => c.Fees,() => coverageFee, JoinType.LeftOuterJoin)
.Where(x => coverage.PrimaryInsured.Id == 701112800)
.SelectList(list =>
list.Select(Projections.Group<CoverageGroup>(x => x.Id))
.WithAlias(() => dto.CoverageGroupId)
.Select(Projections.Group<ClientPolicy>(x => clientPolicy.PolicyNumber))
.WithAlias(() => dto.ClientPolicyNumber)
.Select(Projections.Sum<CoveragePremium>(x => coveragePremium.Amount))
.WithAlias(() => dto.PremiumAmount)
.Select(Projections.Sum<CoverageFee>(x => coverageFee.Amount))
.WithAlias(() => dto.FeeAmount)
.Select(Projections.Sum<PaymentAllocation>(x => paymentAllocation.AllocatedAmount))
.WithAlias(() => dto.AllocatedAmount))
//this messes the query up, it removes all 'select' parts and adds only subquery
//.Select(Projections.SubQuery(
// QueryOver.Of<Coverage>()
// .Where(c => c.CoverageGroup.Id == coverageGroup.Id)
// .SelectList(cl =>
// cl.SelectMin(c => c.CoverageEffectiveDates.Start.Value)
// .WithAlias(() => dto.CoverageFrom))))
//.Select(Projections.SubQuery
// (QueryOver.Of<Coverage>()
// .Where(c => c.CoverageGroup.Id == coverageGroup.Id)
// .SelectList(cl2 =>
// cl2.SelectMax(c => c.CoverageEffectiveDates.End.Value)
// .WithAlias(() => dto.CoverageTo))))
.TransformUsing(new AliasToBeanResultTransformer(typeof(InsuredCoveragePayments)))
.List<InsuredCoveragePayments>();
NHibernate сгенерированным
Без подзапрос
SELECT this_.CoverageGrpId as y0_,
clientpoli2_.Year as y1_,
clientpoli2_.ClientNumber as y2_,
clientpoli2_.BidOptionNumber as y3_
sum(coveragepr7_.PremiumDueAmt) as y4_,
sum(coveragefe8_.PremiumDueAmt) as y5_,
sum(paymentall4_.PaymentAllocAmt) as y6_
FROM vw_D_CoverageGroup this_
inner join vw_D_CoverageGroupRow coveragegr5_ on this_.CoverageGrpId=coveragegr5_.CoverageGrpId
inner join vw_D_Coverage coverage6_ on coveragegr5_.CoverageGrpRowId=coverage6_.CoverageGrpRowId
left outer join vw_D_CoverageFee coveragefe8_ on coverage6_.CoverageId=coveragefe8_.CoverageId
left outer join vw_D_CoveragePremium coveragepr7_ on coverage6_.CoverageId=coveragepr7_.CoverageId
left outer join vw_D_PaymentAllocation paymentall4_ on this_.CoverageGrpId=paymentall4_.CoverageGrpId
inner join vw_D_Batch batch1_ on this_.PremCvrgBatchId=batch1_.PremCvrgBatchId
inner join vw_D_ClientPolicy clientpoli2_ on this_.ClientPolicyId=clientpoli2_.ClientPolicyId
inner join vw_D_Bid bid3_ on clientpoli2_.BidId=bid3_.BidId
WHERE coverage6_.PrimaryInsuredId = @p0
GROUP BY this_.CoverageGrpId, clientpoli2_.Year,clientpoli2_.ClientNumber,clientpoli2_.BidOptionNumber;
@p0 = 701112800 [Type: Int32 (0)]
С подзапрос (оба незакомментированной)
SELECT
(SELECT max(this_0_.CvrgExpDt) as y0_
FROM vw_D_Coverage this_0_
WHERE this_0_.CoverageGrpId = this_.CoverageGrpId) as y0_
FROM vw_D_CoverageGroup this_
inner join vw_D_CoverageGroupRow coveragegr5_ on this_.CoverageGrpId=coveragegr5_.CoverageGrpId
inner join vw_D_Coverage coverage6_ on coveragegr5_.CoverageGrpRowId=coverage6_.CoverageGrpRowId
left outer join vw_D_CoverageFee coveragefe8_ on coverage6_.CoverageId=coveragefe8_.CoverageId
left outer join vw_D_CoveragePremium coveragepr7_ on coverage6_.CoverageId=coveragepr7_.CoverageId
left outer join vw_D_PaymentAllocation paymentall4_ on this_.CoverageGrpId=paymentall4_.CoverageGrpId
inner join vw_D_Batch batch1_ on this_.PremCvrgBatchId=batch1_.PremCvrgBatchId
inner join vw_D_ClientPolicy clientpoli2_ on this_.ClientPolicyId=clientpoli2_.ClientPolicyId
inner join vw_D_Bid bid3_ on clientpoli2_.BidId=bid3_.BidId
WHERE coverage6_.PrimaryInsuredId = @p0;@p0 = 701112800 [Type: Int32 (0)]
Как вы можете видеть, когда я раскомментировать подзапрос, а не только делает он возвращает другие части в select, но также генерирует только один подзапрос. Зачем?