Loading section...

Predicate Pushdown

Concepts: paPredicatePushdown

What They Want to Hear 'Predicate pushdown moves filter conditions as close to the storage layer as possible so that irrelevant data is never read. If my table is partitioned by date and I query WHERE date = '2025-03-15', the engine skips all other date partitions entirely. Within a Parquet file, row group statistics (min/max values) let the engine skip entire row groups without reading individual rows. The result: a query that would scan 1TB reads only 10GB.' That is the answer. Push filters to storage, skip irrelevant data, massive I/O savings.