这是我的 LINQ 代码:
from b in dbContext.SAPBillOfMaterials
from t in dbContext.AUXComponentTypes
where t.ParentId == b.Parent.Id &&
t.MaterialType == b.Component.MaterialType &&
(t.ComponentCategoryCode == null || t.ComponentCategoryCode == b.Component.ComponentCategoryCode)
select new
{
ComponentCode = b.Component.Model_ComponentCode,
Grid = b.Component.Grid ,
ComponentType = t.ComponentType,
ConfigurationId = configId,
ParentSKUId = b.Parent.Id ,
SKUId = b.Component.Id
};
这是 LINQ 到实体的翻译:
SELECT
[Extent2].[ParentId] AS [ParentId],
[Extent4].[Model_ComponentCode] AS [Model_ComponentCode],
[Extent4].[Grid] AS [Grid],
[Extent2].[ComponentType] AS [ComponentType],
[Extent1].[Parent_Id] AS [Parent_Id],
[Extent1].[Component_Id] AS [Component_Id]
FROM [dbo].[SAPBillOfMaterial] AS [Extent1]
INNER JOIN [dbo].[AUXComponentTypes] AS [Extent2] ON [Extent1].[Parent_Id] = [Extent2].[ParentId]
INNER JOIN [dbo].[SAPMasterMaterialSKU] AS [Extent3] ON ([Extent2].[MaterialType] = [Extent3].[MaterialType])
AND ([Extent1].[Component_Id] = [Extent3].[Id])
**AND ([Extent2].[ComponentCategoryCode] = [Extent3].[ComponentCategoryCode])**
LEFT OUTER JOIN [dbo].[SAPMasterMaterialSKU] AS [Extent4] ON [Extent1].[Component_Id] = [Extent4].[Id]
因此,它完全忽略了连接中的 OR 条件:
(t.ComponentCategoryCode == null || t.ComponentCategoryCode == b.Component.ComponentCategoryCode)
有人可以告诉我为什么或我做错了什么吗?
更新 这里是我模型的简化版本:
public class AUXComponentType
{
[Key]
public int Id { get; set; }
[Required, ForeignKey("SAPMasterMaterialSKU")]
public int ParentId { get; set; }
public virtual SAPMasterMaterialSKU SAPMasterMaterialSKU { get; set; }
[Required,StringLength(4)]
public string MaterialType { get; set; }
[Required, StringLength(1)]
public string ComponentType { get; set; }
[Required, StringLength(20)]
public string ComponentCategoryCode { get; set; }
}
public class SAPBillOfMaterial
{
[Key, Column(Order = 1)]
public int Id { get; set; }
[InverseProperty("SAPBOMChilds"), Column(Order = 2)]
public virtual SAPMasterMaterialSKU Parent { get; set; }
[InverseProperty("SAPBOMs"), Column(Order = 3)]
public virtual SAPMasterMaterialSKU Component { get; set; }
public decimal Quantity { get; set; }
}
public class SAPMasterMaterialSKU
{
[Key]
public int Id { get; set; }
[Required,MaxLength(18)]
public string Model_ComponentCode { get; set; }
[MaxLength(8)]
public string Grid { get; set; }
[Required,MaxLength(4)]
public string MaterialType { get; set; }
[Required, MaxLength(20)]
public string ComponentCategoryCode { get; set; }
public virtual ICollection<SAPBillOfMaterial> SAPBOMChilds { get; set; }
public virtual ICollection<SAPBillOfMaterial> SAPBOMs { get; set; }
public virtual ICollection<AUXComponentType> AUXComponentTypes { get; set; }
}