Finding Non Duplicate entries in Excel - excel

Question

I Have a column which contains multiple unique and duplicate values and I'm looking to extract only the non repeating values. How do i go about it?
Example:
A2: 28; 33; 34; 37; 44
A3: 28; 34; 37
I'm trying to get:
A4: 33; 44
example
I've tried finding an answer but couldn't find a solution for this exact problem.

Answer 1

=LET(a,TEXTJOIN(";",,B2:B4),UNIQUE(--TEXTSPLIT(a,";"),TRUE,TRUE))

Answer 2

I don´t see a way of doing this using only formulas. The best approach would be to save those values as a .csv file, and importing that csv file into Excel. Then, using Power Query, you would do the necessary transformations in order to get the desired result.
Here is a step by step solution:
Get your data into a .csv file
Import the csv file by going into Data > From Text/CSV,= and selecting the file. Then, select the delimiter "Semicolon" and click "Transform Data" to open Power Query:
With Power Query open, select all columns by pressing Ctrl + A, and then go to the "Transform" tab and click "Unpivot Columns". You should have something like this:
Delete the "Attribute" column
Remove duplicates from "Value" column
Click "Close & Load" in the Home tab
You then will have the desired result:

Answer 3

I have an answer which ignores any spaces between the values and formats the result by putting only one space between the values. Call the function with two parameters, the values of the two cells to be merged:
Public Function Uniques(stra As String, strb As String) As String
'Uniques("11; 12; 13; 14; 15", " 11;11; 14; 15; 88; 16 ") ==> "12; 13; 88; 16"
Dim ar() As String, delim As String, ss As String, s As String, alen As Integer
Dim z As Integer, p As Integer, c As Integer
delim = ";"
s = Replace(stra & delim & strb, " ", "")
ar = Split(s, delim)
s = delim & s & delim
alen = UBound(ar)
For c = 0 To alen
If ar(c) <> "" Then
ss = delim & ar(c) & delim
p = InStr(1, s, ss)
If (p > 0) Then
p = InStr(p + 1, s, ss)
If p > 0 Then
s = Replace(s, delim & ar(c), "")
For z = c + 1 To alen
If ar(z) = ar(c) Then ar(z) = ""
Next
End If
End If
End If
Next
If (s = delim) Then
Uniques = ""
Else
s = Mid(s, 2, Len(s) - 2)
s = Replace(s, delim, delim & " ")
Uniques = s
End If
End Function
if the two cells have the same value returns empty string ("")

Answer 4

Use Reduce, Textsplit and Hstack to split each row and add it to a single-row array, then use Reduce again to check the number of times each element of the array occurs, and concatenate it to the output if it only occurs once.
=LET(
data, DROP(
TOCOL(A:A, 1),
1
),
row, DROP(
REDUCE(
"",
data,
LAMBDA(a, c,
HSTACK(
a,
TEXTSPLIT(
c,
"; "
)
)
)
),
,
1
),
MID(
REDUCE(
"",
row,
LAMBDA(a, c,
IF(
SUM(
N(
c =
row
)
) = 1,
a & "; " &
c,
a
)
)
),
3,
99
)
)