direct dictionary layout

A dictionary layout that queries the source directly without caching.

direct

The dictionary is not stored in memory and directly goes to the source during the processing of a request.

The dictionary key has the UInt64 type.

All types of sources, except local files, are supported.

Configuration example:

DDL

LAYOUT(DIRECT())

Configuration file

<layout>
  <direct />
</layout>

complex_key_direct

This type of storage is for use with composite keys. Similar to direct.