sql - Include a record only if it has more than 20 related records -


this statement i'm using:

select     country.code "country code",     country.name country,         count(countrycode) "number of cities"     city,     country     city.countrycode = country.code group country.code, country.name;

i need select countries have more 20 cities. create view query afterwards.

use having clause aggregate functions:

... group country.code, country.name having count(countrycode) > 20;

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