While rare in OLAP use cases, the need to modify data is sometimes unavoidable. ClickHouse performs best on immutable data, and any design pattern which requires data to be updated post-insert should be reviewed carefully. That said, ClickHouse provides two mechanisms for modifying data in place:
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Equal (3): Everything in this space must be equal to 3. The answer is 3-1, placed vertically; 4-3, placed vertically; 0-3, placed vertically; 3-3, placed vertically.
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