title: remove dash of UUID generated directly on MySQL
body: <p>I generate <code>UUID</code> using <code>INSERT INTO tbl1 (key, val) VALUES (UUID(), :value)</code> directly on MySQL using PDO. I don't have any idea how to remove those <strong>-</strong> (dashes) on MySQL side, on PHP side I can simply remove it using <code>str_replace()</code>. </p>