Module mz_transform::notice::index_key_empty

Hosts IndexKeyEmpty.

Structs

• IndexKeyEmpty
  An index with an empty key is maximally skewed (all of the data goes to a single worker), and is almost never really useful. It’s slightly useful for a cross join, because a cross join also has an empty key, so we avoid rearranging the input. However, this is still not very useful, because