How to get unique values in a column using excel formula - excel-formula

Question

I have Excel Data like below
JID Val
1001 22
1030 6
1031 14
1041 8
1001 3
2344 8
1030 8
2344 6
1041 8
How do i get the unique JID values like below using formula?
UJID
1001
1030
1031
1041
2344

Answer 1

Here is a solution to get a list of unique items from your tables
There is two parts to this solution.
Part 1) Unique Count
{=SUM(IF(FREQUENCY(IF($A$2:$A$10<>"",MATCH($A$2:$A$10,$A$2:$A$10,0)),ROW($A$2:$A$10)-ROW($A$2)+1),1))}
This will count the number of unique items in your data table and will ignore any blanks
*Note this is an array formula and you will need to use "Ctrl" + "Shift" + "Enter" to use
Part 2) Unique List
This formula will give you the list of unique items in your table
={IF(ROWS($E$5:E5)>$E$2,"",INDEX($A$2:$A$10,SMALL(IF(FREQUENCY(IF($A$2:$A$10<>"",MATCH($A$2:$A$10,$A$2:$A$10,0)),ROW($A$2:$A$10)-ROW($A$2)+1),ROW($A$2:$A$10)-ROW($A$2)+1),ROWS($E$5:E5))))}
again this is an array formula. You can then drag this formula down to get all the unique items.
This formula is a dynamic formula, meaning you can set the data range past your current data range and the list will update as you enter new values.
*Here is a great video to watch to understand this further
https://www.youtube.com/watch?v=3u8VHTvSNE4

Answer 2

You can use the remove duplicate function
Select the column range
Go to Data Tab
then click on Remove Duplicates

Answer 3

I think I've found a more elegant workaround without array-functions or built-in functions:
1st column (ID):
this is the array from we'd like to select distinct values
2nd column (criteria):
checks whether this is the first occurrence
=IF((ROW()-1)=MATCH(A2,$A$2:$A$500,0),1,0)
3rd column (cumulative):
=SUM($B$2:B2)
4th column (count):
this is constant 1
5th column (unique ID):
=OFFSET($A$2,MATCH(ROW()-1,$C$2:$C$501,0)-1,)
6th column (count):
=SUMIF(A2:A21,F2,D2:D21)