Quick tip on how to create a blank field name in Tableau. Create a calculated field to be the blank column and save it as normal – i.e. with a name!
Renaming the calculated field with a blank causes an “empty name is not allowed” error in Tableau. Naming with a space character doesn’t work, it returns the same error.
The solution is to use a zero width space character as the name. Tableau recognises this as a character, not an empty name.
Click the box to copy the value, then return to Tableau.
Rename the blank field, replacing the name by pasting the blank character.
And that’s it! Credit to Andy Kriebel for sharing that tip.