title: how to encode existing mysql data latin1 to utf8_general_ci
body: <p>In the past, my DB collation and table were latin1 or like this. And stored some data on my database.</p>
  <p>But recently changed My DB collation UTF8 and table utf8_general_ci, but my previous data still latin1.</p>
  <p>I want to convert my existing table data to utf8_general_ci. How to??</p>