Vlak 10.2 van SQL Probleemoplosser
Gegewe tabelle:
| id | name |
|---|---|
| 1 | Fabiano |
| 2 | Johnson |
| 3 | Erich |
| 4 | Isabella |
| 5 | Max |
| id | name |
|---|---|
| 1 | Cheese |
| 2 | Sausage |
| 3 | Watermelon |
| id | customer_id | product_id | date | quantity |
|---|---|---|---|---|
| 1 | 4 | 2 | 2023-12-11 | 100 |
| 2 | 4 | 3 | 2023-12-10 | 82 |
| 3 | 3 | 1 | 2023-11-05 | 91 |
| 4 | 2 | 3 | 2023-11-11 | 304 |
| 5 | 2 | 1 | 2023-11-29 | 307 |
| 6 | 3 | 2 | 2023-11-28 | 205 |
| 7 | 4 | 2 | 2023-10-02 | 110 |
| 8 | 5 | 1 | 2023-10-03 | 109 |
| 9 | 5 | 3 | 2023-10-05 | 235 |
| 10 | 1 | 2 | 2023-10-08 | 125 |
Los die volgende probleme vir hulle op:
Vind drie produkte wat na aanleiding van aankope in die afgelope drie maande waarskynlik in die volgende maand gekoop sal word.
