title: Mysql 8.0.3: function regexp_replace does not exist
body: <p>New project uses <code>regexp_replace</code>, so i updated mysql installation to 8.0.3. But still feeling like nothing changed =)</p>
  
  <p>Trivial query:</p>
  
  <pre><code>$ echo "select regexp_replace('a','.','z')" | mysql mysql
  ERROR 1305 (42000) at line 1: FUNCTION mysql.regexp_replace does not exist
  </code></pre>
  
  <p>Version:</p>
  
  <pre><code>$ # mysqld --version
  /usr/sbin/mysqld  Ver 8.0.3-rc-log for Linux on x86_64 (MySQL Community Server (GPL))
  </code></pre>