Find the name and id of the item with the highest average rating.
CREATE TABLE item (title VARCHAR, i_id VARCHAR); CREATE TABLE review (i_id VARCHAR, rating INTEGER)
[SQL] SELECT T1.title, T1.i_id FROM item AS T1 JOIN review AS T2 ON T1.i_id = T2.i_id GROUP BY T2.i_id ORDER BY AVG(T2.rating) DESC LIMIT 1 [/SQL]