title: SQL uses of "less than or equal to" <= vs. "not greater than" !> operators
body: <ul>
  <li><code>&lt;=</code> is <a href="https://docs.microsoft.com/en-us/sql/t-sql/language-elements/less-than-or-equal-to-transact-sql" rel="nofollow noreferrer">the <em>less than or equal to operator</em></a>.</li>
  <li><code>!&gt;</code> is <a href="https://docs.microsoft.com/en-us/sql/t-sql/language-elements/not-greater-than-transact-sql" rel="nofollow noreferrer">the <em>not greater than operator</em></a>.</li>
  </ul>
  <p>Why are there two different comparison operators that seem to do the same thing.</p>
  <p>Is there any situation where one would be prefered over the other?</p>