docs: function execute(req, res) {
  
    // if we have a sparse db store we need
    // to ensure a database exists
    if(!this.store.databases[req.args[0]]) {
      this.store.getDatabase(req.args[0], {pattern: this.pattern});
    }
  
    // update the connection with their selected db index
    req.conn.db = req.args[0];
  
    res.send(null, Constants.OK);
  }