clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
Triage Issues!
When you volunteer to triage issues, you'll receive an email each day with a link to an open issue that needs help in this project. You'll also receive instructions on how to triage issues.
Triage Docs!
Receive a documented method or class from your favorite GitHub repos in your inbox every day. If you're really pro, receive undocumented methods or classes and supercharge your commit history.
C++ not yet supported66 Subscribers
Add a CodeTriage badge to clickhouse
Help out
- Issues
- Index analysis of `toUnixTimestamp64Nano(key)` over a `DateTime64` key throws `DECIMAL_OVERFLOW` for post-2262 values, failing queries whose other conjuncts never read those rows
- `materialize` Nothing guard checks top type only; nested Nothing still throws
- [Iceberg spec fix part 5] Iceberg sort order fix on create query
- FINAL misses dedup for Nullable key with mask-piercing partition expression
- Arrow union children are decoded without the requested type, so a Variant does not round-trip
- `toDate` of a `Date32`/`DateTime64` key: index analysis drops matching granules
- GROUP BY on a JSON column with a nested array of objects splits equal values into duplicate groups: the nested JSON aggregation key is serialized in hash-map path order, which differs between filtered and unfiltered blocks
- `prefer_global_in_and_join = 1` does not rewrite `x IN local_table` / `NOT IN local_table` (nor `IN (subquery)` outside WHERE) to GLOBAL IN: the shard fails with 47/60 or silently reads its own copy of the table
- Wrong results: ARRAY JOIN + CROSS JOIN duplicates rows per replica with
- Detached broken-backup part name truncated when partition id contains a dash
- Docs
- C++ not yet supported