Niloofar เขียนบทวิจารณ์จำนวนเท่าใดในปี 2558ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many reviews has Niloofar written in 2015It is not neccessary to use all the tables.
 business:  bid [ int]  business_id [ varchar]  name [ varchar]  full_address [ varchar]  city [ varchar]  latitude [ varchar]  longitude [ varchar]  review_count [ bigint]  is_open [ tinyint]  rating [ float]  state [ varchar] 
SELECT COUNT(DISTINCT (review.text)) FROM review, user WHERE review.year = 2015 AND user.name = 'Niloofar' AND user.user_id = review.user_id