查找SQL Server的两个表之间的差异

我有这个疑问，从源表返回27074行：查找SQL Server的两个表之间的差异

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

而这一次（第二个表）

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

这将返回27032行。

我想找到两个表之间的差异，我指的是结果应该是这样的：

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

来源

2016-09-06 Ehsan Akbar

向下投票评论！ –

简单的左连接有什么问题？ –

@ZoharPeled是的，它可以找到不同之处。 –

这个查询将返回所有存在于源表，但第二个不存在的记录表。

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

来源

2016-09-06 05:22:20

查找SQL Server的两个表之间的差异

回答

相关问题