使用公共列合并两个excel文件-Mergetwoexcelfilesusingacommoncolumn

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Sub left_join()
Dim res As Variant
Dim i As Long, lastUsedRowSh1 As Long, lastUsedRowSh2 As Long
Dim cell As Range
Sheets(3).Cells.ClearContents
Sheets(1).Range("a:b").Copy Destination:=Sheets(3).Range("a1")
Sheets(3).Columns(2).Insert Shift:=xlToRight
lastUsedRowSh1 = Sheets(1).Cells(ActiveSheet.Rows.Count, "A").End(xlUp).Row
lastUsedRowSh2 = Sheets(2).Cells(ActiveSheet.Rows.Count, "A").End(xlUp).Row
i = 1
For Each cell In Sheets(1).Range("a1:a" & lastUsedRowSh1)
    On Error Resume Next
    res = Application.WorksheetFunction.VLookup(cell.Value, Sheets(2).Range("a1:b" & lastUsedRowSh2), 2, 0)
        If Err.Number = 0 Then
            Sheets(3).Range("b" & i).Value = res
            i = i + 1
        Else
            i = i + 1
        End If
Next cell
End Sub

You can even solve with a simple formula.

你甚至可以用一个简单的公式来解决。

Foglio1

A   B
1   t
2   5
3   t
4   g

Foglio2

A   B
1   tes1
3   tes3
4   tes4

Foglio3

Copy the content of Foglio1 in Foglio3, then run this formula

复制Foglio3中Foglio1的内容,然后运行此公式

=IF(ISERROR(VLOOKUP(Foglio1!A1,Foglio2!$A$1:$B$3,2,0))=TRUE,"",VLOOKUP(Foglio1!A1,Foglio2!$A$1:$B$3,2,0))

and drag it down. Regards.

并将其拖下来。问候。