Vlak 6.9 van SQL probleemoplosser
Gegewe tabelle:
| id | product_id | order_date |
|---|---|---|
| 1 | 2 | 2023-10-01 |
| 2 | 1 | 2023-10-07 |
| 3 | 3 | 2023-10-08 |
| 4 | 1 | 2023-10-02 |
| 5 | 4 | 2023-10-15 |
| 6 | 4 | 2023-10-29 |
| 7 | 1 | 2023-10-25 |
| 8 | 1 | 2023-10-02 |
| 9 | 2 | 2023-10-20 |
| id | name | price | category_id |
|---|---|---|---|
| 1 | product-123111 | 900 | NULL |
| 2 | product-190191 | 1800 | 1 |
| 3 | product-202010 | 1500 | NULL |
| 4 | product-312311 | 10000 | 2 |
| id | order_id | note |
|---|---|---|
| 1 | 9 | Lorem ipsum dolor sit amet. |
| 2 | 4 | Lorem ipsum dolor sit amet, consectetur adipisicing elit. Porro! |
| 3 | 5 | Lorem ipsum dolor sit amet, consectetur adipisicing elit. |
| 4 | 6 | Lorem ipsum dolor sit amet, consectetur adipisicing. |
| 5 | 7 | Lorem ipsum dolor sit amet, consectetur adipisicing elit. Exercitationem, nemo! |
| 6 | 9 | Lorem ipsum. |
| 7 | 3 | Lorem ipsum dolor sit amet, consectetur adipisicing elit. Corporis, placeat, quia? |
| 8 | 2 | Lorem ipsum dolor sit amet, consectetur adipisicing elit. Animi beatae cumque officiis! |
| 9 | 1 | Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime perferendis placeat rem totam? |
Los die volgende probleme vir hulle op:
Skryf 'n navraag wat produkte sal vind wat meer as een keer bestel is en hul name, aantal bestellings en die totale aantal verkoepe eenhede van elke produk sal uitskryf.
