Tag
predicate-pushdown
- Apr 30, 2026 Logical Plans and Rewrite Rules That Preserve Results Why the planner rewrites a bound query into relational algebra before choosing algorithms, and which transformations are safe under NULLs, outer joins, and volatile functions. databases
- Feb 19, 2025 Column Statistics and the Page-Skipping Decision How min/max bounds, null counts, and bloom filters let a reader discard data without decoding it, and why clustering, sorting, and type all change how much they prune. data engineering
- Jan 15, 2025 File Pruning from Per-File Min and Max Statistics How bounds recorded per column chunk let a scan skip whole files, why the pruning rate collapses on high-cardinality or unsorted columns, and how the statistics get into the manifest in the first place. data engineering