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Choosing a partitioning key - ClickHouse Documentation

Clickhouse

A data management technique Partitioning is primarily a data management technique and not a query optimization tool, and while it can improve performance in specific workloads, it shouldn’t be the first mechanism used to accelerate queries; the partitioning key must be chosen carefully, with a clear understanding of its implications, and only applied when it aligns with data life cycle needs or well-understood acces…

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