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Some of it makes sense however CH needs to solve the automatic column mapping (semi-structured data) for the logging use case
[Disclaimer, I work @ ClickHouse]

We agree - we currently have experimental support for JSON, but it is experimental and has some challenges. We're also working on a parallel track, to support semistructured columns (https://github.com/ClickHouse/ClickHouse/issues/54864). This is an alternative to the experimental JSON data type, that aims to address its drawbacks.