Input You'll have a table like the following: namegreeting Austin Gaylord Hola que tal #4702665 Kacie Zulauf Bienvenido 45454545 tal #470815 BD. WA470815 Output In this practice you'll need to extract from the greeting column the number preceeded by the # symbol and place it in a new column named user_id. namegreetinguser_id Austin Gaylord Hola que tal #4702665 4702665 Kacie Zulauf Bienvenido 45..