Design Data Sheet for user shoppingcart in mysql

当设计用户的购物车模型表时:
1:购物车是订单的一种状态
订单的状态：
【待购买】：也就是购物车—超市中放置到购物篮
【待支付】：已经从购物车中确认–去到收银台中结算，但未给钱
【已支付】：已经支付过的订单----已经把钱给了收银台，出来小票了

MySQL本身没有对单表最大记录数进行限制，数值取决于操作系统对单个文件的限制本身。
阿里巴巴《Java开发手册》提出单表行数超过 500 万行或者单表容量超过 2GB，才推荐进行分库分表。
那么，一张表里面存放的数据太多了，那么该怎么设计

In particular, I would like to create a private data table for each user, which belongs to only one user. Perhaps this table is a user’s notebook data table, which records the user’s notes for 10 years. There will be 30 pieces of data updated every day, maybe 1000 more, so 10 years, with 3.6 million pieces of data, then if there are 100,000 users, then it is 36 billion pieces of data, and if you also use the form of separating a table into multiple tables in the database, it will be an outrageously slow operation that makes the machine inefficient

Therefore, it is better to have one data table for one user

MySQL数据库可以存储多达2^64-1个数据表，但实际上一个数据库实例通常不会包含这么多表。数据表的数量受限于服务器的硬件资源，尤其是内存和存储设备。

1：根据用户的id值，来进行分批存储
id值：1-10万的存放在1个硬盘中
那么我只需要按照id的值去找到数据表

2：当分布式时，那么就按照用户的id去找不同的服务器中进行查找
3：优点—有一点吧

I use the [django] framework to develop,
1: I used the [User] model that comes with django and didn't change anything in this model
2: When creating a new user, you should create a data table with [laoliu_<id>] and use [laoliu] as part of the starting name of the data table.
3: [<id>laoliu_] The data table will record all the notes of a user, there may be 1000000 pieces of data,
4: [<id>laoliu_] The data table should have multiple fields, as follows:id=models.AutoField(primary_key=True,unique=True,auto_created=True,verbose_name="ID")
goods = models.ForeignKey(Goods, on_delete=models.DO_NOTHING, verbose_name='goods_id')
goods_num = models.IntegerField("goods_num")
create_time = models.DateTimeField(auto_now_add=True, verbose_name='create_time')
state = models.IntegerField(default=0, verbose_name='state')
remark1 = models.TextField(verbose_name='remark1')
remark2 = models.TextField(verbose_name='remark2')4: [Django] What method does this use?
5: What is the code logic?
6: When you want to use a [laoliu_<id>] data table, how to call it.
When I get [user] through [request], which is [request.user]
How do I open the [laolui_<id>] datasheet belonging to this [user.id] in [Django].
For example, open the note sheet in [laoliu_1] to get all the data in it
For example, open the note sheet in [laoliu_2] to get all the data in it
I'm going to make changes to the [goods][goods_num] field of [id=1] in the [laoliu_2] notesheet, what should I do?