public function reset() : self
    {
        $this->where = [];
        $this->joins = [];
        $this->group = [];
        $this->withr = [];
        $this->order = [];
        $this->having = [];
        $this->aliases = [];
        $this->li_of = [0,0,0];
        $this->qiterator = null;
        return $this;
    }