Clickhouse is very cool. But note that it does not support transactional and relational semantics and does not have real-time updates or deletes. Thus, its mean

Clickhouse is very cool. But note that it does not support transactional and relational semantics and does not have real-time updates or deletes. Thus, its meant for very different applications than TimescaleDB. I would classify Clickhouse more in the data-warehouse space...