feat: implement n_unique for DuckDB
#5584
| Job | Run time |
|---|---|
| 1m 6s | |
| 2m 18s | |
| 1m 54s | |
| 0s | |
| 5m 18s |
n_unique for DuckDB
#5584
| Job | Run time |
|---|---|
| 1m 6s | |
| 2m 18s | |
| 1m 54s | |
| 0s | |
| 5m 18s |