I am stuck with the exact same issue, could you please elaborate a little more on the toolbox solution?
Here’s what I got now:
Database structure-
each user have folders with several images, how could these images be displayed in individual columns?
This is how the data is displayed now ( we only have 1 folder here),
so the expected result would be 1 row only, with folder name, and 3 images in columns B,C,D
Here’s how I tried to add the columns-
Thank you very much! The plugin is awesome btw!
Edit, just stumbled on a new issue today, if the rows are newly added I am unable to edit them because bubble doesn’t see the column ID, no idea what might be causing this…
This is how the rows are added-
============Edit===============
I have tested by adding a text displaying the values that bubble see, and in fact newly created rows don’t show their edited_col_id is this a bug? 
