src/Database/QueryBuilder.php
protected function public__update($table_name)
    {
        $this->properties['query_type'] = self::QUERY_TYPE_UPDATE;
        $this->properties['parameters'] = [];
        $this->properties['update'] = $table_name;
        return $this;
    }
protected function public__update($table_name)
    {
        $this->properties['query_type'] = self::QUERY_TYPE_UPDATE;
        $this->properties['parameters'] = [];
        $this->properties['update'] = $table_name;
        return $this;
    }
<code>
$qb = $conn->QueryBuilder()
->update('users')
->set([
'name' => ':name',
'password' => md5('password'),
]
)
->where('id = :id')
->execute();
</code>

@param string $table_name
@return \Database\QueryBuilder