PMA\libraries\DbQbe::_getSelectClause PHP Method

    private function _getSelectClause()
    {
        $select_clause = '';
        $select_clauses = array();
        for ($column_index = 0; $column_index < $this->_criteria_column_count; $column_index++) {
            if (!empty($this->_formColumns[$column_index]) && isset($this->_formShows[$column_index]) && $this->_formShows[$column_index] == 'on') {
                $select = $this->_formColumns[$column_index];
                if (!empty($this->_formAliases[$column_index])) {
                    $select .= " AS " . Util::backquote($this->_formAliases[$column_index]);
                }
                $select_clauses[] = $select;
            }
        }
        // end for
        if (!empty($select_clauses)) {
            $select_clause = 'SELECT ' . htmlspecialchars(implode(", ", $select_clauses)) . "\n";
        }
        return $select_clause;
    }