Difference between revisions of "SELECT"

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(Exercises)
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<source lang='sql' class='ans'>
 
<source lang='sql' class='ans'>
 
SELECT name, region, population FROM bbc
 
SELECT name, region, population FROM bbc
 +
</source>
 +
</div>
 +
 +
 +
<div class='qu'>
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Show the name for the countries that have a population of at least 200 million. (200 million is 200000000, there are eight zeros)
 +
<source lang='sql' class='def'>
 +
SELECT name FROM bbc
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WHERE population>250000000
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</source>
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 +
<source lang='sql' class='ans'>
 +
SELECT name FROM bbc
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WHERE population>200000000
 
</source>
 
</source>
 
</div>
 
</div>

Revision as of 07:18, 17 May 2012

BBC Country Profiles

This tutorial introduces SQL as a query language. We will be using the SELECT command on the table bbc:

name region area population gdp
Afghanistan South Asia 652225 26000000
Albania Europe 28728 3200000 6656000000
Algeria Middle East 2400000 32900000 75012000000
Andorra Europe 468 64000
...

Exercises

Using the SELECT statement.

Read the notes about this table. Issue the command:

SELECT name, region, population FROM bbc

Look at the output.

SELECT name, region, population FROM bbc
SELECT name, region, population FROM bbc


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