Files
doris/regression-test/data
zhengshiJ d9550c311e [feature](Nereids) implement setOperation (#15020)
The pr implements the SetOperation.

- Adapt to the EliminateUnnecessaryProject rule to ensure that the project under SetOperation is not deleted.
- Add predicate pushdown of SetOperation
- Optimization: Merge multiple SetOperations with the same type and the same qualifier
- Optimization: merge oneRowRelation and union
2022-12-20 15:14:29 +08:00
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2022-11-30 17:59:13 +08:00