Products by Categories
Paulo R. Rodegheri 
Brasil
Paulo R. Rodegheri Brasil
As usual the sales industry is doing an analysis of how many products we have in stock, and you can help them.
Then your job will display the name and amount of products of each category.
| Column | Type |
| id (PK) | numeric |
| name | varchar |
| amount | numeric |
| price | numeric |
| id_categories (FK) | numeric |
| Column | Type |
| id (PK) | numeric |
| name | varchar |
| id | name | amount | price | id_categories |
| 1 | Two-doors wardrobe | 100 | 800 | 1 |
| 2 | Dining table | 1000 | 560 | 3 |
| 3 | Towel holder | 10000 | 25.50 | 4 |
| 4 | Computer desk | 350 | 320.50 | 2 |
| 5 | Chair | 3000 | 210.64 | 4 |
| 6 | Single bed | 750 | 460 | 1 |
| id | name |
| 1 | wood |
| 2 | luxury |
| 3 | vintage |
| 4 | modern |
| 5 | super luxury |
| name | sum |
| luxury | 350 |
| modern | 13000 |
| wood | 850 |
| vintage | 1000 |