Local MySQL database check for changes
As you've described the situation, no — if you have the original file or even access to the original database, you could compare what he sent you with what you're able to get yourself. However, with only the file he's provided, there's no way to determine whether it's been edited. The .sql file is simply a plain text file and there's no audit trail that can ensure — after the fact — that he hasn't modified anything.