SQL topshirig'larining 5.3 darajasi
Berilgan jadvallar:
| id | first_name | last_name | date_of_birth |
|---|---|---|---|
| 1 | John | Smith | 1987-12-12 |
| 2 | Alex | Cooper | 1999-02-20 |
| 3 | Agata | Leyla | 1970-01-30 |
| 4 | Ivan | Ivanov | 1994-05-31 |
| 5 | Peter | Petrov | 1991-08-24 |
| id | title | body | author_id |
|---|---|---|---|
| 1 | Post-1 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. | 12 |
| 2 | Post-2 | Duis aute irure dolor in reprehenderit in voluptate. | 24 |
| 3 | Post-3 | Sed ut perspiciatis, unde omnis iste natus error. | 2 |
| 4 | Post-4 | Ut enim ad minima veniam, quis nostrum. | 1 |
| 5 | Post-5 | Quis autem vel eum iure reprehenderit. | 34 |
| 6 | Post-6 | Et harum quidem rerum facilis est et expedita. | 31 |
| 7 | Post-7 | Excepteur sint occaecat cupidatat. | 22 |
| 8 | Post-8 | Ullam corporis suscipit laboriosam, nisi ut aliquid. | 11 |
Ularni quyidagi topshiriqlarni yeching:
Задание 1
Postlarning va ularning mualliflarining to'liq ro'yxatini oling, hatto postning muallifi bo'lmasa ham.
Задание 2
Mualliflarning va ularning postlarining to'liq ro'yxatini oling, hatto muallifning bitta posti bo'lmasa ham.
Задание 3
Mualliflarning ismlari va tug'ilgan yilini va ular yozgan post nomini oling. E'tibor bering, muallif bitta post yozmagan bo'lishi mumkin.
Задание 4
Mualliflarning ismlari va ularning postlarini oling. Bunda, bitta posti bo'lmagan barcha mualliflar uchun.