My experience with this at one company is the DB became a wild west of cowboyed sprocs that were in source control but a lot of times the sproc in the db didnt match the stored code. It became a way to skirt code reviews and push changes fast. Now, the environment was toxic to begin with, and maybe that wouldnt happen on a project with better technical leadership, but there is a lot of wiggle room for hanky panky at the db level
