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This can be useful in case your input JSON is complex, while you need only few fields in it. This behaviour is controlled by the input_format_json_ignore_unknown_keys_in_named_tuple setting name, that is turned OFF by default. This will, almost, allow to parse gharchive dataset without jq. "almost" because of two things: - Tuple cannot be Nullable, so such keys with Tuple type in ClickHouse cannot be `null` in JSON - You cannot use dot.dot notation to extract columns for file() engine, only tupleElement() Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com> |
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