ClickHouse Blog

Found for this topic "CollapsingMergeTree":
How to Update Data in ClickHouse

There is no UPDATE or DELETE commands in ClickHouse at the moment. And that's not because we have some religious believes. ClickHouse is performance-oriented system; and data modifications are hard to store and process optimally in terms of performance.

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features,update,delete,CollapsingMergeTree,partitions