CREATE TABLE neighborhood (id NUMBER, business_id VARCHAR2, neighborhood_name VARCHAR2)
CREATE TABLE tip (tip_id NUMBER, business_id VARCHAR2, text TEXT, user_id VARCHAR2, likes NUMBER, year NUMBER, month VARCHAR2)
CREATE TABLE category (id NUMBER, business_id VARCHAR2, category_name VARCHAR2)
CREATE TABLE business (bid NUMBER, business_id VARCHAR2, name VARCHAR2, full_address VARCHAR2, city VARCHAR2, latitude VARCHAR2, longitude VARCHAR2, review_count NUMBER, is_open NUMBER, rating FLOAT, state VARCHAR2)
CREATE TABLE review (rid NUMBER, business_id VARCHAR2, user_id VARCHAR2, rating FLOAT, text TEXT, year NUMBER, month VARCHAR2)
CREATE TABLE checkin (cid NUMBER, business_id VARCHAR2, count NUMBER, day VARCHAR2)
CREATE TABLE user (uid NUMBER, user_id VARCHAR2, name VARCHAR2)

What is the number of businesses user Michelle reviews per month ?
SELECT COUNT(DISTINCT (review.text)), review.month FROM business, review, user WHERE review.business_id = business.business_id AND user.name = 'Michelle' GROUP BY review.month
SELECT COUNT(DISTINCT "review"."text"), "review"."month" FROM "business" JOIN "user" ON "user"."name" = 'Michelle' JOIN "review" ON "business"."business_id" = "review"."business_id" GROUP BY "review"."month"