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| id_biling | disc | DESC |
|---|---|---|
| 1 | 100 | disc_A |
| 2 | 200 | disc_A |
| 2 | 300 | disc_B |
| 2 | 400 | disc_C |
| 3 | 500 | disc_A |
| 3 | 600 | disc_C |
| id_biling | disc | DESC |
|---|---|---|
| 1 | 100 | disc_A |
| 2 | 200 | disc_A |
| 2 | 300 | disc_B |
| 2 | 400 | disc_C |
| 3 | 500 | disc_A |
| 3 | 600 | disc_C |