This story was related to me while I was in university.

So a long time ago, (in a galaxy far far away). This student was working as an intern at some tech company. He was running some queries, everything was fine. He decides that's good enough and heads for lunch.

When he comes back the query does not work. He notices the others around him start to stand up asking if anyone has a connection.

Turns out that an intern, at another building, basically deleted everything. I'm guessing they did not add this internship to their resume.