You’re in a time crunch. Maybe you’ve got an undersized backup environment that is incredibly slow, or you just have important stuff happening and you need to keep the software upgrade window as short as possible. You’ve been instructed to fully re-collect stats immediately after upgrading to Teradata 12 (T12), and you know there’s good stuff in the new T12 statistics, but, hey, life’s full of trade-offs. So what awaits you should you upgrade and just let your normal recollection routines refresh statistics over time?