src/WorkerF/DB/Drivers/PDODriver.php
public function delete()
    {
        // should not delete without where
        if (empty($this->_where_str)) {
            throw new \InvalidArgumentException("Need where condition");
        }

        $this->_buildDelete();
        $this->_execute();

        return $this->_pdoSt->rowCount();
    }
public function delete()
    {
        // should not delete without where
        if (empty($this->_where_str)) {
            throw new \InvalidArgumentException("Need where condition");
        }

        $this->_buildDelete();
        $this->_execute();

        return $this->_pdoSt->rowCount();
    }
delete data

@return  int
@throws  \PDOException