public function loadEnsuredNodes($category, $rootNode)
    {
        $pathIds = $category->getPathIds();

        $rootNodeId = $rootNode->getId();

        $rootNodePath = $rootNode->getData($this->_pathField);

        $select = clone $this->_select;
        $select->order($this->_table.'.'.$this->_orderField . ' ASC');

        if ($pathIds) {
            $condition = $this->_conn->quoteInto("$this->_table.$this->_idField in (?)", $pathIds);
            $select->where($condition);
        }

SOLUTION:

INSERT INTO catalog_category_entity(entity_id,entity_type_id,attribute_set_id,parent_id,created_at,updated_at,path,POSITION,level,children_count) VALUES (1,3,0,0,'0000-00-00 00:00:00','2009-02-20 00:25:34','1',1,0,1),(2,3,3,0,'2009-02-20 00:25:34','2009-02-20 00:25:34','1/2',1,1,0);

INSERT INTO catalog_category_entity_int(value_id,entity_type_id,attribute_id,store_id,entity_id,value) VALUES (1,3,32,0,2,1),(2,3,32,1,2,1);

INSERT INTO catalog_category_entity_varchar(value_id,entity_type_id,attribute_id,store_id,entity_id,value) VALUES (1,3,31,0,1,'Root Catalog'),(2,3,33,0,1,'root-catalog'),(3,3,31,0,2,'Default Category'),(4,3,39,0,2,'PRODUCTS'),(5,3,33,0,2,'default-category');