CodeRankGPT -
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The problem context involves a database with two tables: 'city' and 'country'. Each city is associated with a country, and each country is associated with a continent. The task is to find the names of all cities located in Africa.
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The solution uses a SQL SELECT statement to retrieve the desired data. It joins the 'city' and 'country' tables on the 'countrycode' and 'code' fields, respectively. Then, it filters the results to include only those where the 'continent' field of the 'country' table is 'Africa'. The result is a list of city names in Africa.
select city.name from city join country on city.countrycode = country.code where country.continent = 'Africa';
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