Query Exercise: Who’s Changing the Table?

For this week’s Query Exercise, your challenge is to find out who keeps messing up the rows in the Users table.

Take any size version of the Stack Overflow database, and the Users table looks like this:

People are complaining that from time to time, the contents of the AboutMe column in some – but not all – of the Users rows are getting mangled. We’re not sure if it’s an app bug, an ETL problem, or someone goofing around in T-SQL, and we need you to find out.

At the same time, this is also a busy production