morrySnow opened a new pull request, #39755:
URL: https://github.com/apache/doris/pull/39755
pick from master #39640
otherwise:
push limit through union could generate plan:
limit
+-- union
|-- limit
| +-- empty relation
+-- limit
+-- project
and then eliminate union will generate plan:
+-- limit
+- project
+-- limit
+-- project
it could not be processed by tranlator correctly
## Proposed changes
Issue Number: close #xxx
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