Due to the current architecture, predicate derivation at rewrite cannot satisfy all cases,
because rewrite is performed on first and then where, and when there are subqueries, all cases cannot be derived.
So keep the predicate pushdown method here.
eg.
select * from t1 left join t2 on t1 = t2 where t1 = 1;
InferFiltersRule can't infer t2 = 1, because this is out of specification.
The expression(t2 = 1) can actually be deduced to push it down to the scan node.
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