PHPSQLParser\builders\FromBuilder::build PHP Method

    public function build(array $parsed)
    {
        $sql = "";
        if (array_key_exists("UNION ALL", $parsed) || array_key_exists("UNION", $parsed)) {
            foreach ($parsed as $union_type => $outer_v) {
                $first = true;
                foreach ($outer_v as $item) {
                    if (!$first) {
                        $sql .= " {$union_type} ";
                    } else {
                        $first = false;
                    }
                    $select_builder = new SelectStatementBuilder();
                    $len = strlen($sql);
                    $sql .= $select_builder->build($item);
                    if ($len === strlen($sql)) {
                        throw new UnableToCreateSQLException('FROM', $union_type, $outer_v, 'expr_type');
                    }
                }
            }
        } else {
            foreach ($parsed as $k => $v) {
                $len = strlen($sql);
                $sql .= $this->buildTable($v, $k);
                $sql .= $this->buildTableExpression($v, $k);
                $sql .= $this->buildSubquery($v, $k);
                if ($len == strlen($sql)) {
                    throw new UnableToCreateSQLException('FROM', $k, $v, 'expr_type');
                }
            }
        }
        return "FROM " . $sql;
    }

 protected function buildFROM($parsed)
 {
     $builder = new FromBuilder();
     return $builder->build($parsed);
 }