이 레슨은 당분간 영어로 제공돼요.
Many rows, one answer
How many users? What is the best score? An aggregate function reads many rows and returns a single value. Five of them answer most everyday questions.
이 레슨은 당분간 영어로 제공돼요.
How many users? What is the best score? An aggregate function reads many rows and returns a single value. Five of them answer most everyday questions.