# Difference between revisions of "SQLZOO:SELECT from WORLD Tutorial"

namecontinentarea populationgdp
AfghanistanAsia6522302550010020343000000
AlbaniaEurope28748 2831741 12960000000
AlgeriaAfrica2381741 37100000 188681000000
AndorraEurope46878115 3712000000
AngolaAfrica1246700 20609294 100990000000
...

## Country Profile

In this tutorial you will use the SELECT command on the table World:

SELECT name, continent, population FROM world
SELECT name, continent, population FROM world

How to use WHERE to filter records. Show the name for the countries that have a population of at least 200 million. 200 million is 200000000, there are eight zeros.

SELECT name FROM world
WHERE population>250000000
SELECT name FROM world
WHERE population>200000000

Give the name and the per capita GDP for those countries with a population of at least 200 million.

per capita GDP is the GDP divided by the population GDP/population

SELECT name, gdp/population FROM world
WHERE population > 200000000

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 FROM world
WHERE continent='South America'

Show the name and population for France, Germany, Italy

SELECT name, population FROM world
WHERE name IN ('France','Germany','Italy')

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

SELECT name FROM world
WHERE name LIKE '%United%'

Show the name and population in millions and the GDP in billions for the countries of the continent 'South America'. Use the ROUND function to show the values to two decimal places.

For South America show population in millions and GDP in billions to 2 decimal places.
Divide by 1000000 (6 zeros) for millions. Divide by 1000000000 (9 zeros) for billions.
SELECT name, ROUND(population/1000000,2),
ROUND(gdp/1000000000,2)
FROM world
WHERE continent='South America'