human
Schema:
follows (f1, f2)
tweets (id, uid, text, createdate)
user_profiles (uid, name, email, partitionid, followers)
Please answer with SQL.
assistant
Sure, I understand.
human
Find the name of the user who tweeted more than once, and number of tweets tweeted by them.
assistant
SELECT T1.name , count(*) FROM user_profiles AS T1 JOIN tweets AS T2 ON T1.uid = T2.uid GROUP BY T2.uid HAVING count(*) > 1
human
Find the number of followers for each user.
assistant
SELECT count(*) FROM follows GROUP BY f1
human
Find the name of each user and number of tweets tweeted by each of them.
assistant
SELECT T1.name , count(*) FROM user_profiles AS T1 JOIN tweets AS T2 ON T1.uid = T2.uid GROUP BY T2.uid
human
Find the number of users who posted some tweets.
assistant
SELECT count(DISTINCT UID) FROM tweets
human
Find the average number of followers for the users who do not have any tweet.
assistant
SELECT avg(followers) FROM user_profiles WHERE UID NOT IN (SELECT UID FROM tweets)
human
Find the average number of followers for the users who had some tweets.
assistant
SELECT avg ( followers ) FROM user_profiles WHERE UID IN ( SELECT UID FROM tweets ) ;