`user_password` VARCHAR(255) NOT NULL COMMENT '비밀번호', `user_phone_number` VARCHAR(20) NOT NULL COMMENT '전화번호', `user_email` VARCHAR(100) NOT NULL COMMENT '이메일', `user_role` VARCHAR(20) NOT NULL ...
Question :- Ecommerce company is trying to identify returning active users. A returning active user is a user that has made a second purchase within 7 days of any other of their purchases. Write a SQL ...