An Aggregate Is a Function, Not a Sum
Four ways to keep report aggregates over a stream of receipts in ClickHouse, why three of them failed, and the one that survived: cells that are recomputed from their documents instead of added up.
Four ways to keep report aggregates over a stream of receipts in ClickHouse, why three of them failed, and the one that survived: cells that are recomputed from their documents instead of added up.