Question

I got a product table like this

id   |   name   | category 
--------------------------
1    |   name1  |  2,1,5,8,9
2    |   name2  |  2,1
3    |   name3  |  5,8

And I got a category table like this

id   |   catname   
----------------
1    |   cat_name1  
2    |   cat_name2  
5    |   cat_name3 
8    |   cat_name3 
9    |   cat_name3 

Each product can have multiple categories. Categories associated with that product are saved in a row named “category” in product table as “1,5,8,7”, Where each represent category table’s id.

Now I want to display all the products came under a specific category.

I am little bit confused with the query to handle this.

And is this the correct format for saving such type of data ?
Please advice

Answer 1

I would add an extra Table for product-category mapping.

SELECT p.name 
 FROM products p 
   JOIN product_category pc ON  p.id=pc.prod_id 
   JOIN Category c ON c.id = pc.categ_id
 WHERE c.name='Category'