查找或创建关联表Sequelize

Question

1. 是否可以使用类别 findOrCreate 方法？

2. 如何仅将唯一值插入表类别？

       Product.create({
           id: 1,
           title: 'Chair',
           categories: [
             { id: 1, name: 'Alpha' },
             { id: 2, name: 'Beta' }
           ]
         }, {
           include: [{
             association: Categories,
             as: 'categories'
           }]
         })