how to write query in my sql to show usernames and product quantities in each cart?! order order$\_$status id INT Status VARCHAR$(10)---$Kuser$\_$id INT Indoxos status VARCHAR$(10)$ address VARCHAR$(45)$ price INT Indexes order$\_$item order$\_$id INT product$\_$id INT $$ price INT aty INT Indexos product id INT name VARCHAR$(45)$ price INT aty INT Indexes user id INT username VARCHAR$(45)$ Indexes $1$ cart id INT user$\_$id VARCHAR$(45)$ Indexes $0$ O cart$\_$item cart id INT