 # UNIQUE Formula for Non-Adjacent Columns

Bottom Line: Learn how to create a formula that returns unique combinations of values from non-adjacent columns.

Skill Level: Intermediate

## Watch the Tutorial

If you want to follow along, you can use this workbook. It's the same file I use in the video.

## Pulling Unique Lists from Columns That Aren't Adjacent

We received a great question from Irene, who is an Elevate Excel member. She's curious to know if the UNIQUE function can be used to pull entries from columns that are not side by side or next to each other.

The answer to Irene's question is: on it's own, the UNIQUE function can only find unique combinations from adjacent columns. However, we can write a formula to work around that. This formula will essentially create an array of the non-adjacent columns that you want to reference in the UNIQUE function.

It's a similar process to what I explained in this tutorial on the FILTER Formula to Return Non-Adjacent Columns in Any Order.

Here's how to write the formula we need:

## Use INDEX to Create an Array for Non-Adjacent Columns

Below is an example where we want to use the UNIQUE function, which is a dynamic array function, to return a list of unique combinations of Customer Names and Product Names. As you can see, those two columns are not next to each other.

Since the UNIQUE function does not handle that on its own, we have to use use another formula to help. So we're going to use INDEX.

For the INDEX function, the first argument is the array. We will select the entire table for the array.

The next argument is row number (row_num). To define the row numbers we want, we'll first create a list of row numbers using the SEQUENCE function.

The first argument (and the only one we need) in SEQUENCE is rows. To define rows, we will actually use the ROWS function. The only argument for the ROWS function is array, and for that, we will again reference the entire table. This will return every row from the table to our new array.

To define the column number argument (column_num), we can reference column numbers as an array in curly brackets. In our case we want to pull from columns 1 and 3. Those column numbers are specific to the table we're working with, not the sheet overall.

So, all together, our formula to return an array of non-adjacent columns looks like this:

`=INDEX(tblUnique,SEQUENCE(ROWS([tblUnique]),{1,3})`

## Wrap the Formula with UNIQUE

Now that we've created a spill range that shows the columns we want, we simply have to wrap our existing formula with the UNIQUE function.

The UNIQUE function has other arguments, but the only one we need to use is array. Our array is defined by the formula we already created. So the final formula looks like this:

`=UNIQUE(INDEX(tblUnique,SEQUENCE(ROWS([tblUnique]),{1,3}))`

With our duplicates filtered out, our spill range only shows unique entries from the two columns we wanted to pull from.

## Conclusion

You can then sort the list of unique values by wrapping the formula in the SORT or SORBY function. Or you could further filter down the results with the FILTER function.

The possibilities are endless in terms of what you can do with dynamic arrays to create flexible, interactive reports. Checkout our video & post on Dynamic Array Formulas & Spill Ranges to learn more.

• Paul Mwangi says:

This good insight never thought of this. Thanks

• Jon Acampora says:

Thanks Paul!

• Dan says:

This is really helpful! Could you take it 1 step further and look for counts of each of these unique combinations as well?

Thanks!

• Jon Acampora says:

Hi Dan,
Great question! Yes, it is possible and there are several ways to go about it. With formulas you could use a COUNTIFS function.

=COUNTIFS(tblUnique[Customer Name],F4,tblUnique[Product Name],G4)

You could also use a pivot table to create the summary report.

I hope that helps. Thanks again and have a nice day!

• Rahul Chheda says:

Thank you Jon for this Video. I have a question. If I want to get the dates sequence , which is only Saturday& Sunday for 3 months. How can I do this?

• Jon Acampora says:

Hi Rahul,
Great question! This is also possible with dynamic array formulas. Here is a formula that uses SEQUENCE and FILTER. It assumes the start date is in cell M5 and end date in M6.

=FILTER(SEQUENCE(M6-M5,,M5),WEEKDAY(SEQUENCE(M6-M5,,M5),2)>5)

We’ll add this formula to our list for future videos. The SEQUENCE function has a lot of uses with dates.

Thanks!

• Noorol Jannah says:

Hi Jon,
why i dont have SEQUENCE and UNIQUE function?

• Neale Blackwood says:

Hi Jon

Thanks for sharing you can also use the CHOOSE function to join ranges together like this.

=UNIQUE(CHOOSE({1,2},A2:A6,D2:D6))

• Aashish Ilwadhi says:

I can’t find Sequence function in Excel 2019. Is it replaced by some other function in this version of excel?

• Maood says:

This is very helpful. If i want to sort in descending order, then what should be the formula. Thanks

• Roy says:

You just reverse the values in the arrays. So where Jon used “{1,3}” to get columns A and C in that order, you’d use “{3,1}” to get them in the reverse order (C, then A).

Works the same for the rows. Just make the array in reverse order to have the bottom row at the top and so on.

If using SEQUENCE instead of writing the arrays out, do it in the last two of its four arguments. For instance, the following would create the array {1,3,5,7,9}:

SEQUENCE(5,1,1,2)

but this would get the reverse ( {9,7,5,3,1} ):

SEQUENCE(5,1,9,-2)

Older ways of creating these arrays used things like “ROW(1:3)” and that took a different technique. One said, OK, that’s 3 rows, so if I take the array ( {1,2,3} ) it creates and subtract it from one value higher (“4”), then I’d have the array {3,2,1} and INDEX() would turn the table upside down. Then a VLOOKUP() or similar thing would get the latest record for a match, not the earliest one. (Can’t do “ROW(3:1)” because Excel changes it, no matter what, to “ROW(1:3)”… so… thanks, Excel.

• Serg says:

Doesn’t work in Google Sheets. Use QUERY instead. For ex. UNIQUE(QUERY(A1:C10;”select A, C”))

• Charles says:

Hi, how can I make the 1 and 4 in this formula below (which are in “{ }” refer to cell inputs? I can only get it to work with “{1,4}” actually typed in the INDEX formula. Ideally I’d like the 1 and 4 to be MATCH() results.

=INDEX(A1:D10,SEQUENCE(ROWS(A1:D10)),{1,4})

I’ve tried “{“&1&”,”&4&”}” – with 1 and 4 being cell results, but can’t get it to return the 2 arrays that the typed {1,4} gives.

I’m using this to create a single array from 2 non-adjacent arrays to be used in LINEST as the independent variables (allowing multiple regression) against a given dependent variable array.

Thanks

• Martin says:

Is there a similar way to do it with non-adjacent rows?

It doesn’t seem to work, as the sequence function has a mandatory row argument, but I need only the column argument. I want the unique headings of two difference tables (which are themselves results of data-based filtering).

• Roy says:

Use “1” for the row argument.

For example, if A1:C9 has data in the odd rows and odd columns and you wish to have a tight little table with no blank rows (the even ones in this case) or columns (so, losing column B in this case), the following would do the trick:

=INDEX(A1:C9,SEQUENCE(5,1,1,2),SEQUENCE(1,2,1,2))

In it, the row argument SEQUENCE() will return 5 rows starting with row 1 and then adding 2 each iteration to get 3, 5, 7, and 9. That’s the “1,2” at the end. The 5 rows is obvious: the “5” it starts with. Seems perfectly natural for the column argument to be a “1” doesn’t it? After all, you are just wanting to specify rows in this argument so a simple “1” in the columns argument of SEQUENCE() makes it plain vanilla.

Same idea when working with the columns SEQUENCE() function: except here, it’s the rows argument that needs to have no impact on things so you use a “1” for it, then a real value for the columns (“2” since you want the 2 columns that have data), and finish it off with the start value (“1” for column 1) and the jump value (“2” so it gets column 3, not column 2).

So if you use SEQUENCE() on a row related argument, in INDEX() or anything else, you use a “1” in the columns value for it so the only variable has to do with rows. And the other way around if creating an array relating to columns (use the “1” in the rows argument so only the columns argument of SEQUENCE() is doing anything special).

(That’s just inside functions needing row and column related arrays. Lots of other times, you’d be happy to use “non-1” values in both!)

• Haresh P says:

how to add sumifs formula in below formula

=UNIQUE(INDEX(tblUnique,SEQUENCE(ROWS([tblUnique]),{1,3}))

• Haresh says:

how can we add Sumifs from different sheet

=UNIQUE(INDEX(tblUnique,SEQUENCE(ROWS([tblUnique]),{1,3}))

• Generic filters
Exact matches only

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