human
Schema:
county_public_safety (County_ID, Name, Population, Police_officers, Residents_per_officer, Case_burden, Crime_rate, Police_force, Location)
city (City_ID, County_ID, Name, White, Black, Amerindian, Asian, Multiracial, Hispanic)
Please answer with SQL.
assistant
Sure, I understand.
human
List the name of the county with the largest population.
assistant
SELECT Name FROM county_public_safety ORDER BY Population DESC LIMIT 1
human
List the names of counties that do not have any cities.
assistant
SELECT Name FROM county_public_safety WHERE County_ID NOT IN (SELECT County_ID FROM city)
human
Please show the police forces and the number of counties with each police force.
assistant
SELECT Police_force , COUNT(*) FROM county_public_safety GROUP BY Police_force
human
List the names of counties in descending order of population.
assistant
SELECT Name FROM county_public_safety ORDER BY Population DESC
human
What is the location shared by most counties?
assistant
SELECT LOCATION FROM county_public_safety GROUP BY LOCATION ORDER BY COUNT(*) DESC LIMIT 1
human
How many counties are there?
assistant
SELECT COUNT( * ) FROM county_public_safety ;