-- Database schema
| geographic : city [ TEXT ] primary_key , county [ TEXT ] , region [ TEXT ] | generalinfo : id_restaurant [ INTEGER ] primary_key , label [ TEXT ] , food_type [ TEXT ] , city [ TEXT ] generalinfo.city = geographic.city , review [ REAL ] | location : id_restaurant [ INTEGER ] primary_key location.id_restaurant = generalinfo.id_restaurant , street_num [ INTEGER ] , street_name [ TEXT ] , city [ TEXT ] location.city = geographic.city |
-- -- Calculate the average rating of reviews for restaurants in Santa Cruz County.

SELECT AVG(T2.review) FROM geographic AS T1 INNER JOIN generalinfo AS T2 ON T1.city = T2.city WHERE T1.county = 'santa cruz county';