Lightroom: Where is the Selection Criteria: “Description”

I use Smugmug for my photo back-end for photos.foto-biz.com. The problem that I have is that I wanted to make sure that all the photos have a description.

The proper way would be to use Lightroom with a smart collection. If the description is empty then display the photo in the collection. Should be simple. Yes? No!

Lightroom: Selection Criterias I want to find the photos in Lightroom that do not have any description.The question is where is the description selection criteria?Nowhere to be found.

Lightroom Available Selection Criterias

Where's the Description? Since I'm a guy, and according to women, I cannot see anything, especially when it's in front of me. I don't see the Description in the list. Do you? Nooo, no Description. The description doesn't exist in the selection criteria.

Why, no description in the selection criteria? It must be there, there is no way that the Adobe programmers/engineers would have missed that one. It's too important. So I fired SQLiteBrowser to check what's happening in the catalog, I found that the Description doesn't exist! It exists on the screen in the Library module, in the IPTC section of the Metadata under the Headline. But it doesn't exist in the SQLite catalog. In the SQLite catalog it's called: Caption.

Searching for {Caption} {is empty} solved my problem.