How to Handle Updates and Deletes in ClickHouse® (Mutations) ...
How to Handle Updates and Deletes in ClickHouse® (Mutations)
Introduction
ClickHouse® is designed for high-speed analytical queries and large-scale data ingestion. Since it is optimized for append-only workloads, updating or deleting existing records works differently than in traditional row-oriented databases.
Instead of modifying rows in place, ClickHouse® uses Mutations—background operations that rewrite entire data parts on disk.
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