Vectorization is a new query execution model that has matured with column databases, such as Hive, Vertica, Vectorwise, Clickhouse, and others. Vectorization is also one of the ongoing optimizations in TiDB. This post will explain the design and implementation of a vectorization engine in terms of why vectorization is performed, block execution, SIMD and late materialization.
www.slidestalk.com/s/Vectorize…