所以，我有一个现有的mysql数据库，我正试图连接到sequelize-in节点，它有一个products表、一个categories表和一个categories\u-products表。我想做的是退货，每个产品都包含它所属的所有类别。我得到的是：

// Declare Product Model
const Product = sequelize.define('products', {
    name: Sequelize.STRING,
    description: Sequelize.STRING,
    single_price: Sequelize.BOOLEAN,
    oz_price: Sequelize.FLOAT,
    half_price: Sequelize.FLOAT,
    quarter_price: Sequelize.FLOAT,
    eigth_price: Sequelize.FLOAT,
    gram_price: Sequelize.FLOAT,
    unit_price: Sequelize.FLOAT
},
{
    underscored: true
});

// Declare Category Model
const Category = sequelize.define('categories', {
    name: Sequelize.STRING,
    parent_id: Sequelize.INTEGER,
    picture_file_name: Sequelize.STRING
},
{
    underscored: true
});

// Join Table
const ProductCategory = sequelize.define('categories_products', {
    product_id: Sequelize.INTEGER,
    category_id: Sequelize.INTEGER,

}, {  
    timestamps: false,
    underscored: true
});

// Do this because there is no id column on ProductCategory table
ProductCategory.removeAttribute('id');

Category.hasMany(Category, { as: 'children', foreignKey: 'parent_id' });

ProductCategory.belongsTo(Product);
ProductCategory.belongsTo(Category);
Product.hasMany(ProductCategory);
Category.hasMany(ProductCategory);

使用此设置，我查询如下：

Product.findAll({
    include: [{
        model: ProductCategory,
        include: [ Category ]
    }],
    where: { active: true },
    limit: 10
}).then(prods => {
    res.send(prods);
}).catch(err => {
    res.status(500).send(err);
});

我得到我的产品，每一个都有一个类别数组，但每个产品只显示一个类别的最大值。我有产品，应该有许多类别，但它只显示第一。
我错过什么了吗？任何帮助都将不胜感激。