Difference between revisions of "SQLZOO:About"

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  ==Warming up==
 
  ==Warming up==
  <div class='qu'>
+
  &lt;div class='qu'>
 
  [[Read the notes about this table.]] Observe the result of running a simple SQL command.
 
  [[Read the notes about this table.]] Observe the result of running a simple SQL command.
  <source lang='sql' class='def'>
+
  &lt;source lang='sql' class='def'>
 
  SELECT name, region, population FROM bbc
 
  SELECT name, region, population FROM bbc
  </source>
+
  &lt;/source>
  <source lang='html'>
+
  &lt;source lang='html'>
  <source lang='sql' class='ans'>
+
  &lt;source lang='sql' class='ans'>
 
  SELECT name, region, population FROM bbc
 
  SELECT name, region, population FROM bbc
  </source>
+
  &lt;/source>
  </div>
+
  &lt;/div>
+
==Large Countries==
+
<div class='qu'>
+
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
+
WHERE population>250000000
+
</source>
+
+
<source lang='sql' class='ans'>
+
SELECT name FROM bbc
+
WHERE population>200000000
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</source>
+
</div>
+

Revision as of 23:00, 8 June 2012

SQLZoo includes tutorials and reference to support people learning SQL. It features:

  • Interactive access to several SQL engines
  • Sample databases
  • Practical exercise
  • Instant feedback on the success of the student's attempts

Format

Here is an example of a question:

==Warming up==
<div class='qu'>
Read the notes about this table. Observe the result of running a simple SQL command.
<source lang='sql' class='def'>
SELECT name, region, population FROM bbc
</source>
<source lang='html'>
<source lang='sql' class='ans'>
SELECT name, region, population FROM bbc
</source>
</div>
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