Difference between revisions of "Archived SELECT from WORLD Tutorial"

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==Country Profiles==
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==Country Profile==
 
In this tutorial you will use the SELECT command on the table <code>World</code>:
 
In this tutorial you will use the SELECT command on the table <code>World</code>:
  
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==Warming up==
 
==Warming up==
 
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<div class='qu'>
[[Read_the_notes_about_this_table. |Read the notes about this table.]] Observe the result of running a simple SQL command.
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[[Read_the_notes_about_this_table. |Read the notes about this table.]] Observe the result of running a simple SQL command.  
 
<source lang='sql' class='def'>
 
<source lang='sql' class='def'>
 
SELECT name, continent, population FROM world
 
SELECT name, continent, population FROM world

Revision as of 12:46, 10 October 2013

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

Contents

Country Profile

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

Summary

Warming up

Read the notes about this table. Observe the result of running a simple SQL command.

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

Large Countries

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 '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

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