title: Run raw SQL in migration
body: <p>I was trying with whatever syntax and can't think how can I write this correctly:</p>
  
  <pre><code>Schema::table('users', function(Blueprint $table){
      $sql = &lt;&lt;&lt;SQL
          ALTER TABLE 'users' MODIFY 'age' DATETIME
      SQL;
      DB::connection()-&gt;getPdo()-&gt;exec($sql);
  });
  </code></pre>
  
  <p>also tried with</p>
  
  <pre><code>DB::statement('ALTER TABLE \'users\' MODIFY COLUMN DATETIME);
  </code></pre>
  
  <p>and double quotation marks and so on. I always get the following when I run the migration:</p>
  
  <blockquote>
    <p>Syntax error or access violation: 1064 You have an error in your SQL syntax; check<br>
           the manual that corresponds to your MariaDB server version for the right syntax to use near ''users' MODIFY 'age' DATETIME' at line 1 </p>
  </blockquote>
  
  <p>Yes, I have checked, MariaDB uses MySQL's syntax (at least for this case).</p>