Numbers formula problem

Question

I have the following numbers, 20 in total. Numbers are from 0-9.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
3 7 8 1 2 6 6 7 3 1   0   7   0   1   2    2   1   6   8   2
i have another row where I want to put all the numbers that exist in the row 2. numbers that do not appear in that row should not appear in my other row.
But i just want to display the numbers once. The result would be like this:
0 1 2 3 6 7 8
Each number in a different cell.
4,5 and 9 do not appear.
I Hope you could understand my problem. I could post a screenshot, but this forum is buggy.
many thanks,

Answer 1

Splitting a series of data into more than one column or row complicates life.  But if it is important to do that (perhaps for ease of data entry) then here is one way to accomplish what I understand you are looking for:
This is the sample data table (I reduced the number of columns for demonstration purposes):
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DATA 1
16
15
17
16
19
17
16
16
16
18
15
14
14
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
DATA 2
11
9
12
10
12
14
13
11
12
14
15
13
14
15
18
Then you can create a "Helper Table" that looks like this (in practice it will have many more rows):
Value
Distinct
Ranked
DATA 1
DATA 1
9
16
16
10
15
15
11
17
17
12
16
13
19
19
14
17
15
The formula in A2 of the Helper Table, copied down as far as you can go until you get a red triangle range error is, is:
   =INDEX(UNION.RANGES(FALSE,Data::$A$1,Data::$2,Data::$4),1,ROW())
          (The $2 and $4 appear in this pasted formula means to anchor to those rows. You get that by clicking the row number to select the row)
The formula in B2, copied down, is:
   =IFERROR(IF(COUNTIF(A$1:A2,A2)=1,A2,""),"")
The formula in C2, copied down, is:
    =IFERROR(SMALL(B,ROW()−1),"")
    (The B here is the column B address token which you get by clicking the column letter to select the column.)
Your summary table would look something like this:
Durchmesser
9
10
11
12
13
14
15
16
17
18
19
The formula in B2, copied right until you get a blank, is:
   =IFERROR(INDEX(Helper Table::$C,COLUMN()),"")
SG