Github user zuyu commented on the issue:
https://github.com/apache/incubator-quickstep/pull/300
We need to fix the performance bugs before merging.
| **TPC-H** | **master** | **this PR** |
| ------ | ------: | ------: |
| 01 | 5,421 | 5,039 |
| 02 | 402 | 3,968 |
| 03 | 1,229 | 3,506 |
| 04 | 2,472 | 1,242 |
| 05 | 2,807 | 3,731 |
| 06 | 399 | 394 |
| 07 | 1,754 | 3,432 |
| 08 | 906 | 9,961 |
| 09 | 6,766 | TO |---
