[英]c# Different Result between Linq and SQL
我尝试从MSSQL数据库中使用EF6获取一些数据:
IQueryable<Kundentree1> tmp = from f in db.Kundentree1 select f ;
Kundentree1
是一个关于数据库的SQL-View
。
因为我不是所有的结果我都在过滤结果:
tmp = tmp.Where(k => k.Strasse
.ToLower()
.Trim().Contains(search.Strasse
.ToLower()
.Trim()))
.Distinct();
(这不是唯一的,还有一些...)
在我的程序结束时:
var sql = tmp.ToString();
return View(tmp);
在我的测试例程中, tmp
返回7项作为结果,但项目0 - 6是相同的。
如果我使用SqlStatement(SQL)我也会获得7个项目,但在这种情况下,正确的结果是7个不同的项目。
问题可能是什么提示?
更新:
完整生成的SQL-CODE(并正确工作)
SELECT
[Extent1].[Firmenname] AS [Firmenname],
[Extent1].[rechtsform] AS [rechtsform],
[Extent1].[Strasse] AS [Strasse],
[Extent1].[Land] AS [Land],
[Extent1].[Postleitzahl] AS [Postleitzahl],
[Extent1].[Ort] AS [Ort],
[Extent1].[Name] AS [Name],
[Extent1].[Personen_ID] AS [Personen_ID],
[Extent1].[Firmen_ID] AS [Firmen_ID],
[Extent1].[Adressen_ID] AS [Adressen_ID],
[Extent1].[sex] AS [sex],
[Extent1].[Vorwahl] AS [Vorwahl],
[Extent1].[Tel1] AS [Tel1],
[Extent1].[zahlungskondition] AS [zahlungskondition],
[Extent1].[sperrkennzeichen] AS [sperrkennzeichen],
[Extent1].[sendkatalag] AS [sendkatalag],
[Extent1].[lastkatalog] AS [lastkatalog],
[Extent1].[ID] AS [ID],
[Extent1].[NACHNAME] AS [NACHNAME],
[Extent1].[VORNAME] AS [VORNAME],
[Extent1].[ZKTEXT] AS [ZKTEXT],
[Extent1].[FAX] AS [FAX],
[Extent1].[KNR] AS [KNR],
[Extent1].[UID] AS [UID],
[Extent1].[firmenbuch] AS [firmenbuch],
[Extent1].[email] AS [email],
[Extent1].[Lieferant] AS [Lieferant],
[Extent1].[PERS_VORNAME] AS [PERS_VORNAME],
[Extent1].[PERS_NACHNAME] AS [PERS_NACHNAME],
[Extent1].[PERS_sex] AS [PERS_sex],
[Extent1].[Titel] AS [Titel],
[Extent1].[Zusatz] AS [Zusatz],
[Extent1].[Position] AS [Position],
[Extent1].[PERS_EMAIL] AS [PERS_EMAIL],
[Extent1].[PERSONEN_GRUPPE_ID] AS [PERSONEN_GRUPPE_ID],
[Extent1].[NEWSLETTER] AS [NEWSLETTER],
[Extent1].[HEROLD_ID] AS [HEROLD_ID],
[Extent1].[INFOTEXT] AS [INFOTEXT],
[Extent1].[DISG] AS [DISG],
[Extent1].[HANDEL] AS [HANDEL],
[Extent1].[AdressenTYP] AS [AdressenTYP],
[Extent1].[BUNDESLAND] AS [BUNDESLAND],
[Extent1].[CANBOX] AS [CANBOX],
[Extent1].[KatalogTyp] AS [KatalogTyp],
[Extent1].[KatalogBezeichnung] AS [KatalogBezeichnung]
FROM (SELECT
[Kundentree1].[Firmenname] AS [Firmenname],
[Kundentree1].[rechtsform] AS [rechtsform],
[Kundentree1].[Strasse] AS [Strasse],
[Kundentree1].[Land] AS [Land],
[Kundentree1].[Postleitzahl] AS [Postleitzahl],
[Kundentree1].[Ort] AS [Ort],
[Kundentree1].[Name] AS [Name],
[Kundentree1].[Personen_ID] AS [Personen_ID],
[Kundentree1].[Firmen_ID] AS [Firmen_ID],
[Kundentree1].[Adressen_ID] AS [Adressen_ID],
[Kundentree1].[sex] AS [sex],
[Kundentree1].[Vorwahl] AS [Vorwahl],
[Kundentree1].[Tel1] AS [Tel1],
[Kundentree1].[zahlungskondition] AS [zahlungskondition],
[Kundentree1].[sperrkennzeichen] AS [sperrkennzeichen],
[Kundentree1].[sendkatalag] AS [sendkatalag],
[Kundentree1].[lastkatalog] AS [lastkatalog],
[Kundentree1].[ID] AS [ID],
[Kundentree1].[NACHNAME] AS [NACHNAME],
[Kundentree1].[VORNAME] AS [VORNAME],
[Kundentree1].[ZKTEXT] AS [ZKTEXT],
[Kundentree1].[FAX] AS [FAX],
[Kundentree1].[KNR] AS [KNR],
[Kundentree1].[UID] AS [UID],
[Kundentree1].[firmenbuch] AS [firmenbuch],
[Kundentree1].[email] AS [email],
[Kundentree1].[Lieferant] AS [Lieferant],
[Kundentree1].[PERS_VORNAME] AS [PERS_VORNAME],
[Kundentree1].[PERS_NACHNAME] AS [PERS_NACHNAME],
[Kundentree1].[PERS_sex] AS [PERS_sex],
[Kundentree1].[Titel] AS [Titel],
[Kundentree1].[Zusatz] AS [Zusatz],
[Kundentree1].[Position] AS [Position],
[Kundentree1].[PERS_EMAIL] AS [PERS_EMAIL],
[Kundentree1].[PERSONEN_GRUPPE_ID] AS [PERSONEN_GRUPPE_ID],
[Kundentree1].[NEWSLETTER] AS [NEWSLETTER],
[Kundentree1].[HEROLD_ID] AS [HEROLD_ID],
[Kundentree1].[INFOTEXT] AS [INFOTEXT],
[Kundentree1].[DISG] AS [DISG],
[Kundentree1].[HANDEL] AS [HANDEL],
[Kundentree1].[AdressenTYP] AS [AdressenTYP],
[Kundentree1].[BUNDESLAND] AS [BUNDESLAND],
[Kundentree1].[CANBOX] AS [CANBOX],
[Kundentree1].[KatalogTyp] AS [KatalogTyp],
[Kundentree1].[KatalogBezeichnung] AS [KatalogBezeichnung]
FROM [dbo].[Kundentree1] AS [Kundentree1]) AS [Extent1]
WHERE (( CAST(CHARINDEX(LTRIM(RTRIM(LOWER('Salv'))), LTRIM(RTRIM(LOWER([Extent1].[Firmenname])))) AS int)) > 0) AND ( NOT (([Extent1].[Postleitzahl] IS NULL) OR ((LEN([Extent1].[Postleitzahl])) = 0))) AND (( CAST(CHARINDEX(LTRIM(RTRIM('4482')), LTRIM(RTRIM([Extent1].[Postleitzahl]))) AS int)) > 0)
感谢Ivan Stoev:
在数据库视图上创建密钥工作
在我的情况下,它是一个我需要工作的假密钥(uniqueidentifier newID())
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