pgwhalen opened a new pull request, #21250:
URL: https://github.com/apache/datafusion/pull/21250
- `pruning_predicate_filter_pushdown.rs` demonstrates filter pushdown that
removes partitions from the scan using PruningPredicate
- `literal_guarantee_filter_pushdown.rs` demonstrates filter pushdown by
directly pulling out literals using LiteralGuarantee and looking them up in a
custom index
## Which issue does this PR close?
- Closes #21145.
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