Total GDP of Africa
- 1. Show the total population of the world. |
SELECT SUM(population) pop_world |
FROM world |
- 2. List all the continents - just once each. |
SELECT DISTINCT continent |
- 3. Give the total GDP of Africa |
SELECT SUM(gdp) gdp_Africa |
WHERE continent = 'Africa' |
- 4. How many countries have an area of at least 1000000 |
SELECT COUNT(name) num_countries |
WHERE area >= 1000000 |
- 5. What is the total population of ('France', 'Germany', 'Spain') |
SELECT SUM(population) total_pop |
WHERE name IN ('France', 'Germany', 'Spain') |
- 6. For each continent show the continent and number of countries. |
SELECT continent, COUNT(name) num_countries |
GROUP BY continent |
- 7. For each continent show the continent and number of countries with |
- populations of at least 10 million. |
WHERE population >= 10E6 |
- 8. List the continents with total populations of at least 100 million. |
SELECT continent |
HAVING SUM(population) >= 100E6 |
Source: github.com
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