@
musthavemissedit - Maybe something like this will get you somewhere like where you want to be
- Create a Y/N column - hascomments (Has Comments)
- To find books with no comments search comments:false. Edit the metadata of those books to put a 'N' in the Has Comments column.
- To find books with comments search comments:true. Edit the metadata of those books to put a 'N' in the Has Comments column
If that proves to be useful you could then rejig the above into a
Column built from other columns, behaves like tags column type so that the Y/N will be automatically 'assigned' to books.
BR