Draw attention in a table that a photo exists

I have a table, linked to a database.
The table shows some of the fields (the most important ones), but one of the field is the link to a photo. This link is not existing for all records.
What I want to do is just put a star (or a similar character) on the lines that has a link (and nothing to the others).

I have no idea how to adress this problem!
Any idea ?

By using just a DATASET-CONNECTED setup, maybe this will not be possible.
You will have to code it.

Or you add an new FIELD where you rate it with stars.

I thought at your second solution, but rejected it because not very clean. I was expecting something better, anyway, if it is the only one, I will re-envisage it !