class response- computer science

Hello Everyone, As you can tell, I'm still learning to write SQL custom programs. I attempted to create a procedure. However, as I was typing this post; I realized I forgot to include the Call Procedure function. I was unsuccessful in getting any tables to return. I will continue to practice using the sakila database to write custom SQL programs. I received an error in the output field stating that the procedure rent a movie already exists. I have no clue as to why my data did not display. There is so much to explore in mySQL and we are only scratching the surface.