Clickhouse used to refer to it as "Clustered Key"... in reality though when you load your data it makes sense to take on primary key definition and handle it as

Clickhouse used to refer to it as "Clustered Key"... in reality though when you load your data it makes sense to take on primary key definition and handle it as primary key in many workloads. Yet I wish Clickhouse would allow the mode to ensure Uniqueness of Primary key, so people can see it consts so much in Performance, you better to ensure uniqueness is checked elsewhere :)