standardise union behaviour between db implementations #1084
| Job | Run time |
|---|---|
| 58s | |
| 7m 26s | |
| 4m 57s | |
| 7m 12s | |
| 4m 16s | |
| 7m 13s | |
| 5m 53s | |
| 9m 3s | |
| 4m 6s | |
| 9m 14s | |
| 3m 42s | |
| 8m 35s | |
| 5m 45s | |
| 11m 30s | |
| 10m 39s | |
| 10m 17s | |
| 9m 35s | |
| 8m 28s | |
| 8m 41s | |
| 9m 48s | |
| 8m 30s | |
| 9m 40s | |
| 6m 11s | |
| 9m 27s | |
| 9m 15s | |
| 6m 20s | |
| 9m 28s | |
| 3h 26m 9s |