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Article0 replies4,225 followingPosted 20 Feb 2026, 08:21 UTC60.9K views4,126 votes

ClickHouse ReplacingMergeTree for Late-Arriving Event Deduplication

Keep only the latest version of duplicate ClickHouse event rows using ReplacingMergeTree and FINAL, without row-level UPDATE or DELETE.

Started20 Feb 2026, 08:21 UTC

Level 38Owner34,775 rep points