title: Convert from utf8_general_ci to utf8_unicode_ci
body: <p>I have a utf8_general_ci database that I'm interested in converting to utf8_unicode_ci.
  I've tried the following commands</p>
  
  <pre><code>    ALTER DATABASE dbname CHARACTER SET utf8 COLLATE utf8_unicode_ci;
      ALTER TABLE tbl_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci; (for every single table)
  </code></pre>
  
  <p>But that seems to change the charset for future data but doesn't convert the actual existing data from utf8_general_ci to utf8_unicode_ci.
  Is there any way to convert the existing data to utf8_unicode_ci?</p>