learnSQL/10-31-18.sql

-- Show the name and population in millions for the countries of the continent 'South America'.
-- Divide the population by 1000000 to get population in millions.

SELECT name, population/1000000
AS popMillions, continent
FROM world;

-- Show the countries which have a name that includes the word 'United'

SELECT name
FROM countries
WHERE name %like% 'United';

-- Show the countries that are big by area or big by population. Show name, population, and area.

SELECT name, population, area
FROM world
WHERE area > 3000000
OR population > 250000000;

-- For South America, show population
-- not correct

SELECT name, gdp
AS popMillions, gdp/1000000000
FROM world
WHERE continent = 'South America';

-- Show the name and capital where the name and the captial have the same number of characters

SELECT name, capital
FROM world
WHERE length(name) = length(capital)