How to Sort FILTER Results by Date Without Array Errors in Excel
Question details
The user wants to sort records retrieved by a FILTER formula in chronological order but encounters an array error when trying to sort the results.

- Product
- Excel
- Device & OS
- not provided
- Scenario
- Pulling data based on a dropdown selection using a FILTER function and attempting to sort those dynamic results chronologically by a date column.
- Observed behavior
- When attempting to sort the spilled array results directly, Excel reports an error stating that part of an array cannot be changed.
Ensure you are using a modern version of your spreadsheet software that supports dynamic array functions like FILTER, LET, and SORTBY. Clear any manually entered data or adjacent VLOOKUP formulas that might block the dynamic array from spilling.
Use LET and SORTBY to Sort the FILTER Array Dynamically
By nesting your FILTER function inside a SORTBY formula, you can automatically sort the dynamic array chronologically without manually editing spilled cells.
When a formula like FILTER spills results into multiple cells, the spreadsheet prevents you from manually sorting or editing individual cells within that range. To change how the data is displayed, the sorting logic must be built directly into the formula itself.
Delete any adjacent VLOOKUP formulas that were fetching dates separately. The new dynamic array formula will pull and sort all necessary columns at once.
Use the LET function to define your filtered data as a variable for cleaner syntax. Click on the destination cell and input the structure: =LET(data, FILTER('EBO Tracker_Master'!B2:AU199, 'EBO Tracker_Master'!A2:A199=E1), SORTBY(data, INDEX(data,,46), 1))
Ensure that the column index in the INDEX function (e.g., 46) corresponds to the actual date column within your filtered array range. The '1' at the end of the SORTBY formula sorts the dates in ascending order (oldest to newest).

Easily Manage Dynamic Arrays and Complex Formulas in WPS Office
WPS Spreadsheet fully supports modern dynamic array functions like FILTER, SORTBY, and LET, allowing you to manipulate, filter, and sort complex datasets seamlessly without dealing with frustrating array errors.
- 1. Open your workbook in WPS Spreadsheet: Launch WPS Office and open the file containing your raw tracker data and dropdown lists.
- 2. Enter the dynamic array formula: In the destination cell, type the combined =LET(...) formula containing both the FILTER and SORTBY functions to fetch and arrange your data.
- 3. Execute the formula: Press Enter to let the dynamic array spill seamlessly across the adjacent rows and columns, with the results automatically sorted by date.

Frequently Asked Questions
Why do I get a "You cannot change part of an array" error?
This error occurs when you try to manually edit, delete, or sort individual cells that are populated by a dynamic array formula. Because a single formula controls the entire spilled range, you must update the master formula to change the output.
Can I sort a FILTER formula using the SORT function instead of SORTBY?
Yes. If the column you want to sort by is included in the FILTER output, you can wrap it simply: =SORT(FILTER(...), column_index, 1). SORTBY is particularly useful if you need to sort by an array that isn't strictly part of the output or requires complex indexing.
How do I sort the dates from newest to oldest instead?
In your SORTBY or SORT function, change the sort order argument from 1 (ascending) to -1 (descending). For example: =SORTBY(data, INDEX(data,,46), -1).
What does a #SPILL! error mean when using FILTER?
A #SPILL! error indicates that a dynamic array formula cannot output its results because something (like text, a space, or another formula) is occupying the cells it needs to populate. Clear those blocking cells to fix the error.




