Vlak 10.1 SQL Taakboek
Gegewe tabelle:
| id | naam |
|---|---|
| 1 | Fabiano |
| 2 | Johnson |
| 3 | Erich |
| 4 | Isabella |
| id | gebruiker_id | balans |
|---|---|---|
| 1 | 3 | 2500 |
| 2 | 4 | 1100 |
| 3 | 2 | 3700 |
| 4 | 1 | 1500 |
| id | bedrag | tipe | rekening_id | datum |
|---|---|---|---|---|
| 1 | 400 | PURCHASE | 4 | 2023-12-01 |
| 2 | 400 | PURCHASE | 4 | 2023-12-09 |
| 3 | 400 | PURCHASE | 4 | 2023-12-11 |
| 4 | 400 | PURCHASE | 4 | 2023-12-10 |
| 5 | 200 | PURCHASE | 1 | 2023-12-01 |
| 6 | 300 | PURCHASE | 1 | 2023-11-29 |
| 7 | 300 | PURCHASE | 1 | 2023-11-30 |
| 8 | 200 | PURCHASE | 1 | 2023-11-10 |
| 9 | 200 | PURCHASE | 2 | 2023-10-30 |
| 10 | 200 | PURCHASE | 2 | 2023-10-15 |
| 11 | 200 | PURCHASE | 2 | 2023-11-16 |
| 12 | 200 | PURCHASE | 2 | 2023-12-10 |
| 13 | 200 | PURCHASE | 2 | 2023-12-01 |
| 14 | 500 | PURCHASE | 3 | 2023-12-11 |
| 15 | 500 | PURCHASE | 3 | 2023-11-27 |
| 16 | 500 | PURCHASE | 3 | 2023-11-17 |
| 17 | 500 | PURCHASE | 3 | 2023-12-05 |
| 18 | 500 | PURCHASE | 3 | 2023-12-07 |
| 19 | 500 | PURCHASE | 3 | 2023-12-09 |
| 20 | 500 | PURCHASE | 3 | 2023-12-11 |
Los die volgende probleme vir hulle op:
Vind alle gebruikers wat transaksies vir meer as 1000 dollar gedurende die afgelope 30 dae gedoen het, en wie se balans positief gebly het na die transaksie.
