SELECT from MONDE

name	continent	area	population	gdp
Afghanistan	Asia	652230	25500100	20343000000
Albania	Europe	28748	2831741	12960000000
Algeria	Africa	2381741	37100000	188681000000
Andorra	Europe	468	78115	3712000000
Angola	Africa	1246700	20609294	100990000000
...

Profile de pays

Dans ce tutoriel, nous utiliserons l'instruction SELECT sur la table World:

Résumé

Lire les notes à propos de cette table. Observer le résultat de cette commande SQL simple.

SELECT name, continent, population FROM world

SELECT name, continent, population FROM world

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 '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')

Identify the countries which have names including the word 'United'

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

Clear your results

You can play a game: Find the duplicate
You can to continue practising the the same techniques and gain more experience of the basic skills on the Nobel table. The WHERE statement using the nobel table.
You can learn about nested statements, these are instructive and entertaining, but not essential for beginners. Nested SELECT statements using the world table.