Question

I want to make a query so that I can grab only Locations that have at least 50 Places.

I have a table of Locations:

Id, City, Country
1, Austin, USA
2, Paris, France

And a table of Places connected to Locations by Location_id

Id, Name, Details, Location_id
1, The Zoo, blah, 2
2, Big Park, blah, 2

I can join them like so:

SELECT places.name, places.id, locations.country, locations.city
FROM places
INNER JOIN locations
ON places.location_id = locations.id

by how can I only get the results of cities that have at least 50 places and order them by the largest amount?

Thanks!

Answer 1

OK I’ve seen that the above answers are almost there but have some mistakes, so just posting the correct version:

SELECT locations.country, locations.city, COUNT(*) as count_of_places
FROM places
     INNER JOIN locations ON places.location_id = locations.id
GROUP BY locations.country, locations.city
HAVING COUNT(*) >= 50
ORDER BY count_of_places;