zenoyang opened a new pull request, #20234:
URL: https://github.com/apache/doris/pull/20234
## Proposed changes
Avoid copying column elements when join build ouput block.
`*origin_block` is a temporary object, so we can directly move it's column
to output_block, avoid calling `insert_range_from` method, and generate
unnecessary copies.
I added a timer to the `_build_output_block` method, and the time-consuming
comparison before and after optimization is as follows:
env: 1FE 1BE
sql: SSB Q3.1
before:
```
- JoinBuildOutputBlockTimer: 59.603ms
- JoinBuildOutputBlockTimer: 48.529ms
- JoinBuildOutputBlockTimer: 34.444ms
```
after:
```
- JoinBuildOutputBlockTimer: 3.956ms
- JoinBuildOutputBlockTimer: 4.833ms
- JoinBuildOutputBlockTimer: 4.152ms
```
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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