By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.
Records: 5 Duplicates: 0 Warnings: 0
| user_id | parent_id | level |
|---|---|---|
| 9 | 5 | 1 |
| 5 | 3 | 2 |
| 3 | 0 | 3 |
Records: 5 Duplicates: 0 Warnings: 0
| user_id | parent_id | level |
|---|---|---|
| 9 | 5 | 1 |
| 5 | 3 | 2 |
| 3 | 0 | 3 |