功能:1.筛选B列;2.将A列中的值按照筛选后的结果进行合计.
这个特殊点是按照月日进行筛选的.

Sub count_a()
 Dim sh As Worksheet
 Set sh = ActiveSheet
 Range("C2:D" & [D65536].End(3).Row).Clear
 For line_b = 2 To [B65536].End(3).Row
 If Len(Cells(line_b, "B").Value) <> 10 Then
 'Cells(line_b, "B").Value = Left(Cells(line_b, "B").Value, 5) & "0" & Right(Cells(line_b, "B").Value, 4)
 Cells(line_b, "B").Value = Format(Cells(line_b, "B").Value, "YYYY/MM/DD")
 End If
 Next
 arr = ActiveSheet.Range("B2:B" & [B65536].End(3).Row)
 Set dict = CreateObject("scripting.dictionary")
 For j = 2 To UBound(arr)
 If LenB(Right(arr(j, 1), 5)) > 0 Then
 dict(Right(arr(j, 1), 5)) = ""
 End If
 Next j
 k = dict.keys
 Dim count_a
 For dict_i = 0 To dict.Count - 1
 count_a = 0
 Key = k(dict_i)
 'MsgBox Key
 Cells(dict_i + 2, "C").Value = Format(Key, "MM/DD")
 For line_a = 2 To [a65536].End(3).Row
 If Right(Cells(line_a, "B").Value, 5) = Key Then
 count_a = count_a + Cells(line_a, "A").Value
 End If
 Next
 Cells(dict_i + 2, "D").Value = count_a
 Next
End Sub