v.21.7New Feature

Added Support for Array Type in Dictionaries

Added support for Array type in dictionaries. #25119 (Maksim Kita).
Added support for the Array data type in ClickHouse dictionaries.

Why it matters

This feature enables users to define dictionary attributes as arrays, allowing more complex data structures to be stored and queried efficiently within dictionaries. It enhances the flexibility and expressiveness of dictionaries, which are widely used for high-performance key-value lookups.

How to use it

To use this feature, define dictionary attributes with the Array data type in the dictionary configuration files or SQL definitions. The dictionary engine will then support storing and retrieving array values per key as part of the dictionary's data.