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 supported67 Subscribers
Add a CodeTriage badge to clickhouse
Help out
- Issues
- CTE inside an ALTER TABLE ... DELETE/UPDATE subquery fails with UNKNOWN_TABLE: the CTE name is qualified with the database
- Propagate the OpenTelemetry trace context to stateless workers and add a span per distributed plan task
- Highlight JSON syntax in Pretty and Vertical output formats
- ObjectStorageQueue: parallel_inserts is declared in the table metadata and never written, so the setting has no effect
- Fix `BAD_ARGUMENTS` for `S3` arguments combining `headers(...)` with a key-value argument
- Float32 expanded-distance score misassigns vectors with a large common offset
- Parquet spatial-pruning schema walk loops on unvalidated num_children
- `grouping()` over a two-shard `Distributed` table throws 10 `NOT_FOUND_COLUMN_IN_BLOCK` with `optimize_skip_unused_shards = 1`: `__groupingOrdinary(..., _CAST([0], 'Array(UInt64)'), 1)` vs `[0]` header mismatch (regression since 26.9)
- `additional_table_filters` / `additional_result_filter` with a column matcher (`*`, `COLUMNS('.*')`, `t.*`) throws 1 `Unqualified matcher * cannot be resolved. There are no table sources`; the same predicate works in `WHERE` and under the old analyzer
- Remote/RemoteSecure still runs the host allowlist check during metadata replay
- Docs
- C++ not yet supported