XuPengfei-1020 opened a new pull request, #36326:
URL: https://github.com/apache/doris/pull/36326
## Proposed changes
Original extractor(TryEliminateUninterestedPredicates.java) caused some
errors while try to derive the expressions which can be used for pruning
partitions.
I tried to write a new extractor(and with unit tests) for pruning
partitions, it is more simple and reliable (I think).
The theory of extractor is pretty simple:
A:Sort the expression in two kinds:
1. evaluable-expression (let's mark it as E).
Expressions that can be evaluated in the partition pruning stage.
In the other word: not contains non-partition slots or deterministic
expression.
2. un-evaluable-expression (let's mark it as UE).
Expressions that can NOT be evaluated in the partition pruning stage.
In the other word: contains non-partition slots or deterministic
expression.
B: Travel the predicate, only point on AND and OR operator, following the
rule:
(E and UE) -> (E and TRUE) -> E
(UE and UE) -> TRUE
(E and E) -> (E and E)
(E or UE) -> TRUE
(UE or UE) -> TRUE
(E or E) -> (E or E)
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