问使用Id以外的2个集合字段填充Mongoose

EN

var Stocks = new Schema({
    Symbol : String,
    Name : String,
    MarketCap : Number,
    Sector : String,
    Industry : String
});
mongoose.model('Stocks', Stocks, 'Stocks'); 

var Prices = new Schema({
    date : Date,
    symbol : String,
    open : Number,
    close : Number,
    low : Number,
    high : Number,
    volume : Number
});
mongoose.model('Prices', Prices, 'Prices');