ClickHouse row-level deduplication.
Functions to count uniqs.
How to change ORDER BY.
ClickHouse. How to insert AggregateFunction data.
Insert Deduplication / Insert idempotency , insert_deduplicate setting.
How to use Tuple() and Map() with nested JSON messages in MVs
ETL vs Materialized Views vs Projections in ClickHouse.
How to create ORDER BY suitable for filtering over two different columns in two different queries