clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Report cyclic aliases as `CYCLIC_ALIASES` error instead of `UNKNOWN_IDENTIFIER`
- Fix parseDateTimeBestEffortUS for a day followed by a month name
- Table-function anchor check skips MV/View unwrap: rows returned once per replica
- `RIGHT JOIN` gate skips table-function check: `unknown stream` `LOGICAL_ERROR`
- JSONExtract*/JSONHas drop a leading empty key for native JSON arguments
- JSONExtractString/JSONExtract leak %2E for dotted keys in native JSON objects
- JSONExtract into JSON type ignores json_type_escape_dots_in_keys
- Prometheus query API rejects role, query_id, stacktrace, quota_key params
- Add `FixedArray` data type, subscripts `arr[i, j]` and `arr[][j]`, and `einsum`
- TinyLog/StripeLog/Log unreadable after rollback to 26.8 once 26.9+ appended to them (mixed LZ4/ZSTD blocks, CANNOT_DECOMPRESS)
- Docs
- C++ not yet supported