Filter to archetypes whose partition component equals the given value.
A partition column is const per archetype, so this is decided at
archetype granularity (O(archetypes), no row scan). Keyed to the store's
partition components only — a non-partition column is not const per
archetype, so a value filter on it is not archetype-decidable.
Filter to archetypes whose partition component equals the given value. A partition column is const per archetype, so this is decided at archetype granularity (O(archetypes), no row scan). Keyed to the store's partition components only — a non-partition column is not const per archetype, so a value filter on it is not archetype-decidable.