phossa2 / query

        if (empty($clause)) {

            $result[] = '*';

        } else {

            foreach ($clause as $as => $col) {

                $alias = $this->quoteAlias($as);

                $field = $this->quoteItem($col[0], $col[1]);

                $result[] = $field . $alias;

            }

        }

        return $this->joinClause('', ',', $result, $settings);

    {

        $result = [];

        $clause = &$this->getClause('FROM');

        foreach ($clause as $as => $tbl) {

            $alias = $this->quoteAlias($as);

            $table = $this->quoteItem($tbl);

            $result[] = $table . $alias;

        }

        return $this->joinClause('FROM', ',', $result, $settings);

    }