How to make one product could be displayed in two categories?

Question

MySQL

There is a product, it has a category
It is necessary that it can be in several categories at once
How to do this, tell me please?

Answer 1

https://code.tutsplus.com/articles/sql-for-beginne...

Answer 2

assign product 2 categories

Answer 3

https://m.habr.com/post/193380/
Item 8

Answer 4

Create a link table "Products - Categories", then from the Products table make a one-to-many relationship, similarly for the category. Then write sql queries with join.