[fix](Nereids) infer predicates generate wrong result #23440
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we use two facilities to do predicate infer: PredicatePropagation and PullUpPredicates. When we do propagation in PredicatePropagation, we save the source predicates could be used in the upper node. However, we shoud not save any predicates from join on clause. Because these expression is not same with predicate in filter and could not prepagate to other not except the join's Immediate children. For example: ```sql select a.c1 from a left join b on a.c2 = b.c2 and a.c1 = '1' left join c on a.c2 = c.c2 and a.c1 = '2' inner join d on a.c3=d.c3 ``` the predicates `a.c1 = '1'` and `a.c1 = '2'` should not be inferred as filter to relation `a`
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fix by #23456 |
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we use two facilities to do predicate infer: PredicatePropagation and PullUpPredicates. When we do propagation in PredicatePropagation, we save the source predicates could be used in the upper node. However, we shoud not save any predicates from join on clause. Because these expression is not same with predicate in filter and could not prepagate to other not except the join's Immediate children.
For example:
the predicates
a.c1 = '1'anda.c1 = '2'should not be inferred as filter to relationa