Fix Array Formula Messing Up When Sorting in Google Sheets

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Array formulas often break or mess up if they are located within the range being sorted. So, can we prevent array formulas from breaking or messing up during sorting in Google Sheets?

In most cases, we can. The simple solution is to move the array formula one row above the sort range. I’ll explain how to adjust the formula for this. However, this approach may not work in all scenarios.

Let’s explore an example of an array formula that messes up and breaks in a particular case when sorting in Google Sheets.

Understanding the Problem

In the example below, there’s an array formula in cell C2 that assigns grades to students based on their scores.

Sample Data and Array Formula

Formula:

=ArrayFormula(IF(B2:B>900, "A", IF(B2:B>700, "B", IF(B2:B>500, "C", IF(B2:B>0, "D",)))))

It uses a nested IF structure to work as follows:

  • If the “Total Mark Out of 1000” is greater than 900, the formula assigns a grade of “A”.
  • If the marks are greater than 700, it assigns “B”.
  • If the marks are greater than 500, it assigns “C”.
  • Otherwise, it assigns “D”.

This grading is done using a single array formula in column C.

Now, let’s say I want to sort the student names alphabetically. To do this, I select the range A2:C8 and sort the data using Data > Sort range > Sort range by column A (A to Z).

After sorting, check column C. You’ll see that the sorting has messed up the array formula because the row containing the formula moved during the sort.

Example of an Array Formula Messing Up During Regular Sorting

Solutions to Array Formula Messing Up in Sorting

To prevent array formulas from messing up during sorting in Google Sheets, you can use a simple trick: enter the array formula outside the sort range. For instance, instead of placing the array formula in cell C2, enter it in C1.

However, the formula will need slight modifications. Use the following syntax:

={"column name"; arrayformula}

This format appends a column name to the array formula, ensuring it integrates smoothly with the header row. Let’s explore two approaches based on different sorting scenarios.

Option #1: Prevent Sorting from Messing Up the Array Formula

For the example above, here’s the modified array formula:

={"Grade"; ArrayFormula(IF(B2:B>900, "A", IF(B2:B>700, "B", IF(B2:B>500, "C", IF(B2:B>0, "D",)))))}

Enter this formula in cell C1, not C2. Since row 1 isn’t part of the sort range, the formula remains unaffected during sorting.

This solution works well in most cases. You can sort the data using Data > Sort range or apply a filter and sort using Data > Create a Filter, then selecting A-Z or Z-A from the filter drop-down.

However, if you use Data > Create filter view, the sorting will break the formula. To prevent this, you need to modify the array formula itself. Let’s explore the fix below.

Example of an Array Formula Breaking When Sorting with Filter View

Option #2: Prevent Filter View Sorting from Breaking the Array Formula

Here’s a solution that works for both cases:

=ArrayFormula(IF(ROW(A:A)=1, "Grade", IF(B:B>900, "A", IF(B:B>700, "B", IF(B:B>500, "C", IF(B:B>0, "D",))))))

How does this formula differ from the Option #1 formula?

This formula uses full column ranges, such as A:A and B:B, instead of partial ranges like A2:A or B2:B. Avoid using ranges like A1:A or B1:B, as they can still cause the formula to break during sorting.

  • In the first row, the formula returns the header, controlled by the condition IF(ROW(A:A)=1, "Grade", ...).
  • For all other rows, the formula performs the actual calculations.

By using this method, the array formula remains unaffected, regardless of whether sorting is performed via Data > Sort range, Data > Create a Filter, or Data > Filter view.

Conclusion

Array formulas can break when sorting data in Google Sheets, but with the right adjustments, you can prevent this. Moving the formula to the header row and modifying it to accommodate sorting ensures smooth operation.

Prashanth KV
Prashanth KV
Your Trusted Google Sheets and Excel Guide Prashanth KV brings a wealth of experience in Google Sheets and Excel, cultivated through years of work with multinational corporations in Mumbai and Dubai. As a recognized Google Product Expert in Docs Editors, Prashanth shares his expertise through insightful blogging since 2012. Explore his blog for practical tips and guidance on maximizing your spreadsheet skills.

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22 COMMENTS

  1. Hi Prashanth,

    I am so happy to tell that your solution worked perfectly. I am sorry that I posted this on the wrong topic page because I thought it was more to with array sorting rather than the monthly output; as I was getting it anyways with my formula.

    Thanks again!!

  2. Hi Prashanth,

    I am trying to adapt your array sort method for my query.

    =ARRAYFORMULA(SORTN(TEXT(GOOGLEFINANCE(B2, "close", TODAY()-1000,
    TODAY(),1),{"yyyy mm ", "@"}), 9^9, 2, 1, 0))

    I am using this formula to pull down the closing price of a stock. The output data is in this format:

    Date Value
    2023-08 100
    2023-07 106

    …and so on.

    However, I want to present this output in reverse order. The oldest date should be first, and the most recent date should be last.

    I appreciate your help in advance.

    • Hi Pradeep,

      I believe you posted your question in the wrong topic.

      The issue with your formula is that the text formatting is preventing you from sorting the data in the desired order.

      I suggest you use the following formula, which is the correct way to achieve your desired result.

      =LET(gf,QUERY(GOOGLEFINANCE(B2, "close", TODAY()-1000,TODAY(),1),
      "Select * Offset 1",0),SORTN(HSTACK(EOMONTH(INT(CHOOSECOLS(gf,1)),-1)+1,
      CHOOSECOLS(gf,2)),9^9,2,1,1))

      You can find this approach in my EOMONTH function under the subtitle “The Role of EOMONTH in QUERY.”

      • I wanted the last date of the month instead of the first date.

        I am new to Google Sheets, and there is nothing like this in Microsoft Excel. I hope you will be so kind as to help me again.

        Many thanks,

        Pradeep

        • I understand. Here is the formula. It will return the actual month-end date in the GOOGLEFINANCE result with timestamp, instead of the month-end dates.

          =LET(data,QUERY(GOOGLEFINANCE(B2, "close", TODAY()-1000,TODAY(),1),
          "Select * Order By Col1 Desc Offset 1",0),
          SORTN(data,9^9,2,EOMONTH(CHOOSECOLS(data,1),-1)+1,1))

          • Dear Prashanth,

            Sorry to bother you again. This formula is also giving the closing prices of the actual month-end date. But I need the closing price on the first day of the month.

            Could you take a second look?

            Thanks

            Pradeep

  3. Hi Prashanth, great post!

    Just have one question,
    How would you include a SUM of all the values just below the header without:
    – Messing up the SUM row order
    – Getting a circular dependency

  4. This is a great option, I can’t seem to get the array to calculate the last row in the column.

    =ArrayFormula(if(row(A:A)=1,"ID",IF(isblank(H:H),"",
    ifna(vlookup($G$2:$G,Codes!$I$2:$J,2,false))&" - "&
    ifna(vlookup($D$2:$D,Codes!$C$2:$D,2,false))&
    ifna(vlookup($E$2:$E,Codes!$E$2:$F,2,false))&
    ifna(vlookup($F$2:$F,Codes!$A$2:$B,2,false))&$V$2:$V&
    ifna(vlookup($C$2:$C,Codes!$G$2:$H,2,false))))
    )

    There is a value in H, the result for the last row is that it only puts in the ” – ” but nothing from the lookup values.

    If I add another row at the bottom, it works fine with the previous last row.

  5. Is there a way to prevent it from putting 0’s all the way to the end of the column? What did I miss?

    here is my formula:

    =ArrayFormula(if(row(A:A)=1,"Days Rest",IF(J:J<21,"0",if(J:J<36,"1",if(J:J<51,"2",if(J:J<65,"3",if(J:J<86,"4")))))))

    I also have this one in the next column, any idea how to make it a date format?

    =ArrayFormula(IF(row(A:A)=1,"Eligible Date",(To_Date(C:C+K:K))))

    • Fixed it adding the initial IF to check ISFBLANK.

      =ArrayFormula(if(row(A:A)=1,"Days Rest",
      IF(isblank(J:J),"",IF(J:J<21,"0",
      IF(J:J<36,"1",if(J:J<51,"2",
      if(J:J<65,"3",if(J:J<86,"4"))))))))

      Still working on the date column.

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