code: public function init()
      {
          $this->where     = null;
          $this->tableData = null;
          $this->table     = '';
          $this->request   = [
              'allColumnsSchema' => [],
              'columns'          => [],
              'leftJoin'         => [],
              'rightJoin'        => [],
              'setUpdate'        => [],
              'union'            => [],
              'values'           => [],
          ];
          $this->limit     = 0;
          $this->offset    = 0;
          $this->delete    = false;
          $this->orderBy   = [];
          $this->execute   = null;
          $this->lists     = null;
  
          return $this;
      }
docs: Initialise les paramètre de la requête.