clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Metrics for tracking insertions via materialized view
- external-authenticators http add support for role mapping
- Add test: New `BAD_ARGUMENTS` error path for simultaneous `X-ClickHouse-Quota` header and `quota_key` URL parameter is untested
- Preallocate multipart_tags deque to reduce dynamic memory allocation …
- Add test: `UUIDv7ToDateTime` non-v7 fallback returning epoch is untested
- Add test: `Path::hasGlobsIgnorePlaceholders` early-return branch (no placeholder, raw globs) untested
- Fix CHECK TABLE re-fetch loop on parts with unknown-projection orphan checksum entries
- Improve canceling queries with url() function
- `isNumber(removeNullable(type))` in `PrettyBlockOutputFormat` does not strip `LowCardinality`, so `LowCardinality(numeric)` columns skip digit-group highlighting while plain or `Nullable` numeric columns are highlighted
- `trivial_limit = 1 + max_rows` triggers `TOO_MANY_ROWS` for boundary case `LIMIT N` with `max_rows_to_read = N`
- Docs
- C++ not yet supported