fa-check"></i><b>2.10</b> Review Questions</a></li>
</ul></li>
<li class="chapter" data-level="3" data-path="sql-intro.html"><a href="sql-intro.html"><i class="fa fa-check"></i><b>3</b> Introduction to SQL</a>
<ul>
<li class="chapter" data-level="3.1" data-path="sql-intro.html"><a href="sql-intro.html#basics"><i class="fa fa-check"></i><b>3.1</b> Basics</a></li>
<li class="chapter" data-level="3.2" data-path="sql-intro.html"><a href="sql-intro.html#aggregate-functions"><i class="fa fa-check"></i><b>3.2</b> 