Support Traversable values with empty columns for batchInsert()
#512
| Job | Run time |
|---|---|
| 1m 21s | |
| 1m 20s | |
| 1m 29s | |
| 1m 30s | |
| 1m 36s | |
| 1m 32s | |
| 1m 42s | |
| 1m 33s | |
| 1m 37s | |
| 2m 10s | |
| 1m 27s | |
| 1m 43s | |
| 1m 46s | |
| 1m 28s | |
| 1m 39s | |
| 1m 26s | |
| 1m 28s | |
| 1m 31s | |
| 1m 28s | |
| 1m 40s | |
| 1m 34s | |
| 33m 0s |