-- Lägg till L2: Te & choklad under Dryck
INSERT INTO `Category` (`name`, `parentId`)
  SELECT 'Te & choklad', c1.id
  FROM `Category` c1
  WHERE c1.name = 'Dryck' AND c1.parentId IS NULL
    AND NOT EXISTS (
      SELECT 1 FROM `Category` c2
      WHERE c2.name = 'Te & choklad' AND c2.parentId = c1.id
    );

-- Lägg till L3: Te under Te & choklad
INSERT INTO `Category` (`name`, `parentId`)
  SELECT 'Te', c2.id
  FROM `Category` c1
  JOIN `Category` c2 ON c2.parentId = c1.id AND c2.name = 'Te & choklad'
  WHERE c1.name = 'Dryck' AND c1.parentId IS NULL
    AND NOT EXISTS (
      SELECT 1 FROM `Category` c3
      WHERE c3.name = 'Te' AND c3.parentId = c2.id
    );