InventoryContainerDetailsへの外部キーを持つエンティティAllocatedContainersがあります。
以下のlinqクエリを実行すると、AllocatedContainersに関連するテーブルエントリがないレコードが返されますが、AllocatedContainerに結合されたレコードがあるはずの場合、その行全体は返されません。なぜ理解できないのですか？
これがクラスです。AllocatedContainerとの仮想関係に注意してください
public partial class InventoryContainerDetail
{
public InventoryContainerDetail()
{
this.AllocatedContainers = new HashSet<AllocatedContainer>();
}
public int Id { get; set; }
public int InventoryContainerHeaderId { get; set; }
public int ItemId { get; set; }
public Nullable<int> ReceiptDetailId { get; set; }
public decimal QtyInContainer { get; set; }
public virtual InventoryContainerHeader InventoryContainerHeader { get; set; }
public virtual Item Item { get; set; }
public virtual ICollection<AllocatedContainer> AllocatedContainers { get; set; }
}
クエリは次のとおりです。
IQueryable<InventoryContainerDetail> containerDtlsToAllocateOLD =
repository
.SearchFor(
x => x.InventoryContainerHeader.FacilityId == intFacilityId
&& x.ItemId == intItemId
&& (x.QtyInContainer - x.AllocatedContainers.Sum(a => a.AllocatedQty)) > 0
)
.OrderBy(x => x.CreatedOn);
これはこのSQLを出します：
SELECT
[Project2].[Id1] AS [Id],
[Project2].[Id] AS [Id1],
[Project2].[InventoryContainerHeaderId] AS [InventoryContainerHeaderId],
[Project2].[ItemId] AS [ItemId],
[Project2].[ReceiptDetailId] AS [ReceiptDetailId],
[Project2].[QtyInContainer] AS [QtyInContainer],
[Project2].[CreatedById] AS [CreatedById],
[Project2].[CreatedOn] AS [CreatedOn],
[Project2].[ModifiedById] AS [ModifiedById],
[Project2].[ModifiedOn] AS [ModifiedOn],
[Project2].[C1] AS [C1],
[Project2].[Id2] AS [Id2],
[Project2].[AllocationNeedId] AS [AllocationNeedId],
[Project2].[AllocatedContainerDetailId] AS [AllocatedContainerDetailId],
[Project2].[AllocatedQty] AS [AllocatedQty],
[Project2].[CreatedById1] AS [CreatedById1],
[Project2].[CreatedOn1] AS [CreatedOn1],
[Project2].[ModifiedById1] AS [ModifiedById1],
[Project2].[ModifiedOn1] AS [ModifiedOn1]
FROM ( SELECT
[Project1].[Id] AS [Id],
[Project1].[InventoryContainerHeaderId] AS [InventoryContainerHeaderId],
[Project1].[ItemId] AS [ItemId],
[Project1].[ReceiptDetailId] AS [ReceiptDetailId],
[Project1].[QtyInContainer] AS [QtyInContainer],
[Project1].[CreatedById] AS [CreatedById],
[Project1].[CreatedOn] AS [CreatedOn],
[Project1].[ModifiedById] AS [ModifiedById],
[Project1].[ModifiedOn] AS [ModifiedOn],
[Project1].[Id1] AS [Id1],
[Extent4].[Id] AS [Id2],
[Extent4].[AllocationNeedId] AS [AllocationNeedId],
[Extent4].[AllocatedContainerDetailId] AS [AllocatedContainerDetailId],
[Extent4].[AllocatedQty] AS [AllocatedQty],
[Extent4].[CreatedById] AS [CreatedById1],
[Extent4].[CreatedOn] AS [CreatedOn1],
[Extent4].[ModifiedById] AS [ModifiedById1],
[Extent4].[ModifiedOn] AS [ModifiedOn1],
CASE WHEN ([Extent4].[Id] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C1]
FROM (SELECT
[Extent1].[Id] AS [Id],
[Extent1].[InventoryContainerHeaderId] AS [InventoryContainerHeaderId],
[Extent1].[ItemId] AS [ItemId],
[Extent1].[ReceiptDetailId] AS [ReceiptDetailId],
[Extent1].[QtyInContainer] AS [QtyInContainer],
[Extent1].[CreatedById] AS [CreatedById],
[Extent1].[CreatedOn] AS [CreatedOn],
[Extent1].[ModifiedById] AS [ModifiedById],
[Extent1].[ModifiedOn] AS [ModifiedOn],
[Extent2].[Id] AS [Id1],
[Extent2].[FacilityId] AS [FacilityId],
(SELECT
SUM([Extent3].[AllocatedQty]) AS [A1]
FROM [dbo].[AllocatedContainers] AS [Extent3]
WHERE [Extent1].[Id] = [Extent3].[AllocatedContainerDetailId]) AS [C1]
FROM [dbo].[InventoryContainerDetail] AS [Extent1]
INNER JOIN [dbo].[InventoryContainerHeader] AS [Extent2] ON [Extent1].[InventoryContainerHeaderId] = [Extent2].[Id] ) AS [Project1]
LEFT OUTER JOIN [dbo].[AllocatedContainers] AS [Extent4] ON [Project1].[Id] = [Extent4].[AllocatedContainerDetailId]
WHERE (([Project1].[QtyInContainer] - [Project1].[C1]) > cast(0 as decimal(18))) AND ([Project1].[FacilityId] = 1) AND ([Project1].[ItemId] = 3027)
) AS [Project2]
ORDER BY [Project2].[CreatedOn] ASC, [Project2].[Id1] ASC, [Project2].[Id] ASC, [Project2].[C1] ASC
これがリポジトリメソッドです。を介して熱心な読み込みを誘導していることに注意してください。それが機能することを期待して含めますが、運がありません。
public override IQueryable<InventoryContainerDetail> SearchFor(Expression<Func<InventoryContainerDetail, bool>> predicate, Expression<Func<InventoryContainerDetail, bool>> orderbylinq = null)
{
if (orderbylinq == null)
{
return DbSet.Include("AllocatedContainers").Where(predicate);
}
else
{
return DbSet.Include("AllocatedContainers").Where(predicate).OrderBy(orderbylinq);
}
}