clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix `NOT_FOUND_COLUMN_IN_BLOCK` in `ConvertOrLikeChainPass` for a `LIKE` chain over an alias that contains another chain
- Join-order optimization creates a 19.27 million-row intermediate result for a 3,873-row query
- Fix JSONExtract(..., 'JSON') ignoring json_type_escape_dots_in_keys
- Hide the second argument of a `Backup` database S3 locator that has `headers(...)` in logs
- Fix JSONExtract losing a leading empty key for native JSON
- Cherry pick #128685 to 26.3: Keep the window state layout of `contingency`, `cramersV` and `theilsU` out of `-State` results
- Cherry pick #128685 to 26.8: Keep the window state layout of `contingency`, `cramersV` and `theilsU` out of `-State` results
- Cherry pick #128685 to 26.9: Keep the window state layout of `contingency`, `cramersV` and `theilsU` out of `-State` results
- PREWHERE sizing of JSON and bucketed Map subcolumns reads part prefixes from object storage one by one during planning, bypassing the filesystem cache
- Cherry pick #127880 to 26.10: Do not exhaust the coroutine stack when sending or receiving a deeply nested Dynamic value
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