human
Schema:
city (City_ID, City, Hanzi, Hanyu_Pinyin, Regional_Population, GDP)
match (Match_ID, Date, Venue, Score, Result, Competition)
temperature (City_ID, Jan, Feb, Mar, Apr, Jun, Jul, Aug, Sep, Oct, Nov, Dec)
hosting_city (Year, Match_ID, Host_City)
Please answer with SQL.
assistant
Sure, I understand.
human
Give me a list of cities whose temperature in Mar is lower than that in July and which have also served as host cities?
assistant
SELECT T1.city FROM city AS T1 JOIN temperature AS T2 ON T1.city_id = T2.city_id WHERE T2.Mar < T2.Jul INTERSECT SELECT T3.city FROM city AS T3 JOIN hosting_city AS T4 ON T3.city_id = T4.host_city
human
Give me a list of cities whose temperature in Mar is lower than that in Dec and which have never been host cities.
assistant
SELECT T1.city FROM city AS T1 JOIN temperature AS T2 ON T1.city_id = T2.city_id WHERE T2.Mar < T2.Dec EXCEPT SELECT T3.city FROM city AS T3 JOIN hosting_city AS T4 ON T3.city_id = T4.host_city
human
What is id of the city that hosted events in the most recent year?
assistant
SELECT host_city FROM hosting_city ORDER BY YEAR DESC LIMIT 1
human
Which city has hosted the most events?
assistant
SELECT T1.city FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id = T2.host_city GROUP BY T2.host_city ORDER BY count(*) DESC LIMIT 1
human
What are the GDP and population of the city that already served as a host more than once?
assistant
SELECT t1.gdp , t1.Regional_Population FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id = T2.host_city GROUP BY t2.Host_City HAVING count(*) > 1
human
Which cities served as a host city after 2010?
assistant
SELECT T1.city FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id = T2.host_city WHERE T2.year > 2010 ;