XieJiann opened a new pull request, #22265:
URL: https://github.com/apache/doris/pull/22265
## Proposed changes
When there are constant aliases involved in the join operator above this
project operator, we have the flexibility to connect this constant slot to any
node below it. For example:
```
Left Outer Join time1 = t.time2
/ \
project now() as time. t
|
Join
/ ... \
t1 ... tn
```
we can put the slot to any node between t1 to tn
## 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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