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ClickHouse® Engines Cheat Sheet

TL;DR

Quick reference for choosing ClickHouse engines. 90% of production tables use MergeTree. Use ReplacingMergeTree for deduplication, SummingMergeTree for simple sums, and AggregatingMergeTree for complex aggregations.

Quick Decision Tree

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PreviousEngine Settings
Next2. Ingestion

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ClickHouse® Engines Cheat Sheet | ClickHouse for Developers