'LibreOffice Calc and Pivot table with empty cells

I want to process survey results with LibreOffice Calc (for example with data coming from LimeSurvey).

Since some questions were optional, some cells are empty (like A6):

LibreOffice screenshot columns

I want to answer questions like:

  • How many people have given the answer 2?
  • How many people did not respond?

So, I've created a pivot table with InsertPivot:

enter image description here

but... I was not able to answer the question "How many people did not respond?" (see B6).

LibreOffice pivot table screenshot empty

Actual bug:

  • the cell B6 counting empty cells is empty

Expected result:

  • the cell B6 counting empty cells should be 1 (sum of empty cells = 1)

To fix this problem I have a workaround consisting in creating a "temporary table" and replacing empty cells with something weird like § EMPTY VALUE § to then be able to analyze empty values with my pivot table.

How do you handle empty cells in LibreOffice Calc with a pivot table?

Tested on LibreOffice 6.4.7 on Debian GNU/Linux but I can reproduce on Ubuntu 20.04 Focal Fossa and on other operating systems.

Thank you so much!



Solution 1:[1]

Another workaround:

in column B, transform column A to string (the formula for cell B2 is =""&A2)

Then create the pivot table using the values in column B.

Solution 2:[2]

It seems LibreOffice has a known bug since 2012, involving pivot tables with empty cells.

https://bugs.documentfoundation.org/show_bug.cgi?id=47523

AFAIK, the described workaround, involving a temporary table, is the only known solution.

Note: since 2022 it seems there is an available patch under review that you can check:

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Claudio Negri
Solution 2