参考
Dim t As Table = Tables("表A")
t.Sort = "姓名,任务完成,卫生,日期"
If t.Rows.Count > 1 Then
Dim r As Row = t.Rows(t.Rows.Count - 1)
For i As Integer = t.Rows.Count - 2 To 0 Step -1
Dim r1 As Row = t.Rows(i)
If r("姓名") = r1("姓名") And r("任务完成") = r1("任务完成") And r("卫生") = r1("卫生") And r("日期") = r1("日期") Then
r1.Delete
Else
r = r1
End If
End If
End If