You never inherited a project that opened a db, made a single db call, and closed it again in a loop to process an entire table? I'm jealous! Some people get so

You never inherited a project that opened a db, made a single db call, and closed it again in a loop to process an entire table? I'm jealous! Some people get so used to bad architecture that if you fix it they become suspicious. "What? That call normally takes 10 mins. to run and it just completed in 2 seconds? We need to test this, something must be wrong here!"