ClickHouse Primary Keys
This is a cross-post from: (https://medium.com/@f1yegor/clickhouse-primary-keys-2cf2a45d7324)
Special thanks to Alexey Milovidov, ClickHouse developer, for providing material for this article.
Recently I dived deep into ClickHouse. ClickHouse is column-store database by Yandex with great performance for analytical queries. For example check benchmark and post of Mark Litwintschik.