Database: cre_Theme_park
Question: What are the names and ids of the tourist attractions that are visited at most once?
SQL:
SELECT T1.Name ,  T1.Tourist_Attraction_ID FROM Tourist_Attractions AS T1 JOIN VISITS AS T2 ON T1.Tourist_Attraction_ID  =  T2.Tourist_Attraction_ID GROUP BY T2.Tourist_Attraction_ID HAVING count(*)  <=  1