PSIS</h3>
<p>
<blockquote><pre>start_of_year(dt DATETIME)
  RETURNS DATE </pre></blockquote>
</p>
<p>
  Input:
  <ul>
    <li><strong>dt</strong>: a DATETIME object, from which to extract start of year.
	</li>
  </ul>
</p>

<h3>EXAMPLES</h3>
<blockquote><pre>mysql&gt; SELECT common_schema.start_of_year('2011-03-24 11:17:08') as dt;
+------------+
| dt         |
+------------+
| 2011-01-01 |
+------------+
</pre></blockquote>

<h3>ENVIRONMENT</h3>
MySQL 5.1 or newer

<h3>AUTHOR</h3>
Shlomi Noach
				<br/>
		