Search for all books that have only one tag

[Perfect10]

How could I search for all books that have only one tag?

Originally, I could only think of one solution. I wanted to know if I could search for "quantity of tags=1" and asked how I would go about doing that.

I needed a quick solution so I isolated tags in the book details pane on the right, so I could see what I was doing, and was about to go through all the books one-by-one, sorted by title. I quickly realized I could sort books by tag and find the group of books that have only one tag quite easily.

I wanted to delete this post, but I couldn't figure it out.

[PeterT]

From https://manual.calibre-ebook.com/gui.html#search-sort

You can search for the number of items in multiple-valued fields such as tags. These searches begin with the character #, then use the same syntax as numeric fields. For example, to find all books with more than 4 tags use tags:#>4. To find all books with exactly 10 tags use tags:#=10.

[BetterRed]

Originally Posted by Perfect10

I wanted to delete this post, but I couldn't figure it out.

Regular members can't delete posts - if you want something deleted hit the little '!' button to the right of the Karma button and leave a msg there.

But we'll leave it as is - you gave a solution, and Peter T added another (better) one - someone might find them useful.

BR