Thank you for your answer!
So, clinical and staffing pharmacist are sharing the job, basically.
Why would people want to do residency getting lower salary if they can do both..
I'm just so curious about this b/c I never want to go into retail.
The answer is simple. Because if you don't do one, you can't get a job in the hospital (forget about "staffing" vs "clinical", any job in the hospital outside rural areas require residencies these days).
If you're a hiring manager, would you rather hire 1) a residency trained pharmacist, who can catch up in 2 weeks of training, or 2) a new grad who need 6 months to catch up? You likely will hire the 1st one.
Residencies are not magical potions that will make you a smarter person than when you started, but they provide a concentrated learning experience (with designated time slots to go over guidelines, plus the guidance of preceptors who know what's really important). The residency is typically 1 year (for general PGY-1), so if you've done it right, you should be relatively ready to start any inpatient job after you're done. If you're a new grad learning on the job, you likely would need at least 6 months to be comfortable. You'll have to do readings on your own time (which usually doesn't happen because come on, how many people are motivated enough to read after a long day at work?), so you'll take longer than that 6 months to be truly well-rounded with clinical knowledge. That's why I think working rural inpatient then getting board certified is perfect - you get the training at a likely smaller hospital, with likely more down time to read materials that people also read during residency, but you get a real pharmacist salary. After ~3 years of inpatient experience, it shouldn't matter if you're residency-trained or not. (Although, some hospitals like to hire residency-trained only, I don't know why it matters, maybe so that they can say all their pharmacists are residency trained).
To sum it up, there's nothing you learn during residency (or very few things) that you can't pick up on the job, but in this market, you won't be able to have that opportunity. With everyone residency-trained and board certified, people likely won't hire you as a new grad who need a lot more time to catch up.