Kiwango cha 8.4 cha Kitabu cha Mazoezi ya SQL
Meza zifuatazo zimetolewa:
| id | jina | bei |
|---|---|---|
| 1 | Samsung Galaxy S23 Ultra | 1500 |
| 2 | iPhone 15 Pro Max | 1700 |
| 3 | Google Pixel 8 Pro | 1900 |
| 4 | Samsung Galaxy Z Fold 5 | 1300 |
| 5 | Motorola Razr Plus | 1400 |
| id | mteja_id | simu_id | tarehe_ya_kuagiza |
|---|---|---|---|
| 1 | 3 | 1 | 2023-07-07 |
| 2 | 2 | 2 | 2023-06-30 |
| 3 | 2 | 5 | 2023-05-03 |
| 4 | 1 | 5 | 2023-03-12 |
| 5 | 1 | 3 | 2023-01-29 |
| 6 | 1 | 4 | 2022-12-11 |
| 7 | 2 | 1 | 2022-08-10 |
| 8 | 2 | 3 | 2022-11-18 |
| 9 | 3 | 2 | 2022-12-21 |
| 10 | 3 | 5 | 2022-10-10 |
| id | jina |
|---|---|
| 1 | Mark |
| 2 | Alex |
| 3 | Jim |
Tatua matatizo yafuatayo kwa ajili yao:
Задание 1
Tafuta mteja aliyetumia kiasi kikubwa zaidi kwenye bidhaa katika kila mwezi, na uwasilishe majina yao na jumla ya kiasi.
Задание 2
Badilisha tatizo la awali ili pia upate bidhaa ya gharama kubwa zaidi ambayo mteja huyu alinunua katika kila mwezi, na uwasilishe jina lake na bei.