I know someone's Discord nickname, but I don't know their Discord number tag!

Let's say someone else's Discord nickname and tag is Clyde#9999. I only know his Discord nickname (Clyde). But I want to add him as a friend. However, to add friends, you must also have a Discord number tag (#9999). But I don't know the number tag. So now I can't add friends. It would be nice if the Discord nickname alone would list people with the same nickname and have different Discord tags.