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  1. Prepare
  2. SQL
  3. Basic Join
  4. Population Census

Population Census

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  1. Prepare
  2. SQL
  3. Basic Join
  4. Population Census
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Given the CITY and COUNTRY tables, query the sum of the populations of all cities where the CONTINENT is 'Asia'.

Note: CITY.CountryCode and COUNTRY.Code are matching key columns.

Input Format

The CITY and COUNTRY tables are described as follows: