Vectorized query execution

A database execution model that pushes batches of column values through cache-friendly, SIMD-amenable operators instead of processing one row at a time, raising throughput on analytical SQL workloads.

grounded in: HN front-page theme 'Databases and data-plane performance: squeezing correctness and throughput out of SQL infrastructure', plus the system's existing SQL concepts (typed-sql, text-to-sql, generated-s