Finden Differenz zwischen zwei Tabellen in SQL Server

Question

Ich habe diese Abfrage, die 27074 Zeilen aus der Quelltabelle zurück:

SELECT 
    [DOC NO] 
    ,[LineNumber] 
    ,[SHEET] 
    ,[TestPkgNo] 
    ,[ITEM CODE] 
FROM 
    [excel].[dbo].[MTO2] 

Und diese eine (zweite Tabelle)

SELECT 
    DocumentNumber, LineNumber, SheetNumber, PackageNumber, ItemCode 
FROM 
    [SPMS2].[dbo].[Materials] 
JOIN 
    Lines ON materials.LineId = Lines.Id 
JOIN 
    MaterialDescriptions ON MaterialDescriptions.Id = Materials.MaterialDescriptionId 
JOIN 
    TestPackages ON TestPackages.Id = Materials.TestPackageId 

Dies gibt 27.032 Zeilen.

ich den Unterschied zwischen zwei Tabellen finden wollen, dann meine ich das Ergebnis so sein sollte:

doc line sheet testpack sourcetable secondtable 
** * *  *   ok   not ok 

Answer 1

Diese Abfrage alle Datensätze zurück, die in der Quelltabelle existieren, aber existiert nicht in der zweiten Tabelle.

SELECT 
    [DOC NO] 
    ,[LineNumber] 
    ,[SHEET] 
    ,[TestPkgNo] 
    ,[ITEM CODE] 
FROM 
    [excel].[dbo].[MTO2] sourcetable 

LEFT JOIN 
    (
     SELECT 
      DocumentNumber, LineNumber, SheetNumber, PackageNumber, ItemCode 
     FROM 
      [SPMS2].[dbo].[Materials] 
     JOIN 
      Lines ON materials.LineId = Lines.Id 
     JOIN 
      MaterialDescriptions ON MaterialDescriptions.Id = Materials.MaterialDescriptionId 
     JOIN 
      TestPackages ON TestPackages.Id = Materials.TestPackageId 
    ) secondtable 
ON sourcetable.[DOC NO] = secondtable.DocumentNumber -- Remove conditions that are not needed 
AND sourcetable.[LineNumber] = secondtable.LineNumber -- Remove conditions that are not needed 
AND sourcetable.[SHEET] = secondtable.SheetNumber -- Remove conditions that are not needed 
AND sourcetable.[TestPkgNo] = secondtable.PackageNumber -- Remove conditions that are not needed 
AND sourcetable.[ITEM CODE] = secondtable.ItemCode -- Remove conditions that are not needed 

WHERE secondtable.DocumentNumber IS NULL -- Assuming DocumentNumber is a non-nullable column