hashed username in MySQL?

I had a user set up in the users file and it was all working. Now I'm experimenting with MySQL and in the debug output I'm looking at the SQL queries and instead of the actual clear text username I'm getting this: AE576AA1F2CB984F6D07750C01C0EAF9 ...which I assume is the username hashed. Is there some simple option someone can't think of that would explain a clear text username being ok for the files module, but getting a hashed username in the SQL module? An unrelated comment: The last time I used RADIUS there was PAP and CHAP. MSCHAP was a new thing. The amount that has changed in the past 15 years is a little overwhelming.