title: I can't figure out what will happen after SELECT for NAME, SURNAME, AGE, OS_NAME where age> = 15
body: <p>How i can write a script using a temporary table with the following fields: <code>NAME</code>, <code>SURNAME</code>, <code>AGE</code> and <code>OS_NAME</code>. </p>
  
  <p>From the result of the temporary table, remove all clients whose age is less than 15 years. </p>
  
  <p>As a result, display the phone's OS and the number of people who have this OS.
  I can't figure out what will happen after </p>
  
  <pre class="lang-py prettyprint-override"><code>SELECT for NAME, SURNAME, AGE, OS_NAME where age&gt; = 15
  </code></pre>
  
  <p>No time to learn <code>group by</code> my boss scolds me badly :(</p>