4
,所以我必須在EF核心下面的查詢,這會導致重複的結果,即使艱難IM呼叫的第一或默認的就可以了實體框架的核心 - 遷移到.NET的核心後,首先返回重複結果
DateTime maxDate = SqlDateTime.MaxValue.Value;
var results = (from r in _dbContext.audit_Results
join e in _dbContext.audit_DataEncounters on new { r.IdAudit, r.PatientFirstName, r.PatientLastName, r.PatientDOB } equals new { e.IdAudit, PatientFirstName = e.FirstName, PatientLastName = e.LastName, PatientDOB = e.DateOfBirth } into eJoin
let e = eJoin.Where(it => it.StartDate <= r.TransactionDate && r.TransactionDate <= (it.EndDate ?? maxDate))
.OrderBy(it => it.Inpatient).OrderByDescending(it => it.StartDate)
.FirstOrDefault()
where r.IdAudit == idAudit && r.PatientFirstName == "ERIC" && r.PatientLastName == "BROOKS"
select new AuditResultBulkModel()
{
IdResult = r.IdResult,
map_HasPatient = eJoin.Any(),
map_IdEncounter = e != null ? e.IdEncounter : (int?)null
}).ToList();
產生的查詢看起來是這樣的:
SELECT *
FROM [audit_Results] AS [r]
LEFT JOIN [audit_DataEncounters] AS [e] ON ((([r].[IdAudit] = [e].[IdAudit]) AND (([r].[PatientFirstName] = [e].[FirstName]) OR ([r].[PatientFirstName] IS NULL AND [e].[FirstName] IS NULL))) AND (([r].[PatientLastName] = [e].[LastName]) OR ([r].[PatientLastName] IS NULL AND [e].[LastName] IS NULL))) AND (([r].[PatientDOB] = [e].[DateOfBirth]) OR ([r].[PatientDOB] IS NULL AND [e].[DateOfBirth] IS NULL))
WHERE (([r].[IdAudit] = @__idAudit_1)
ORDER BY [r].[IdAudit], [r].[PatientFirstName], [r].[PatientLastName], [r].[PatientDOB]
有人可以告訴我如何得到正確的結果嗎?
在過去的(實體框架.NET Framework中) - 這種用來生產使用OUTER APPLY非重複的結果。
編輯: 我的EF Core版本是2.0.0。
數據模型如下:
public class audit_Result
{
[Key]
public int IdResult { get; set; }
public int IdAudit { get; set; }
public bool? map_HasPatient { get; set; }
public int? map_IdEncounter { get; set; }
public virtual audit_Audit audit_Audit { get; set; }
}
public class audit_DataEncounter: IAuditEntity
{
[Key]
public int IdEncounter { get; set; }
public int IdAudit { get; set; }
[StringLength(50)]
public string FirstName { get; set; }
[StringLength(50)]
public string LastName { get; set; }
public DateTime? DateOfBirth { get; set; }
public DateTime? StartDate { get; set; }
public DateTime? EndDate { get; set; }
public bool? Inpatient { get; set; }
public virtual audit_Audit Audit { get; set; }
}
public class audit_Audit
{
[Key]
public int IdAudit { get; set; }
public virtual ICollection<audit_DataEncounter> audit_DataEncounters { get; set; }
public virtual ICollection<audit_Result> audit_Result { get; set; }
}
如果你正在得到不需要的重複,你可以不使用不同的刪除它們嗎? 看看這篇文章:https://stackoverflow.com/questions/4539668/entity-framework-select-distinct-name – BastianBuhrkall
請發佈在查詢中使用的實體模型。另外指定EF Core版本。 –
@IvanStoev我將自己的數據模型 –