clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Support column matcher expansion for default value expressions and index expressions
- UTF-8 BOM causes silent config failure in autodetection for `.conf` and extensionless files
- `ToStartOfWeekImpl::execute(Int32, ...)` missing `std::max(res, 0)` clamp — Date32 overflow persists
- `with_aliases` scope contamination causes table references to not be qualified in sibling UNION branches
- `fuzzQuery` table function enters infinite loop when `max_query_length > 500`
- `readWKTMultiLineString` documentation example uses wrong function name `readWKTLineString`
- `DELETE ... IN PARTITION` partition clause silently ignored for `EmbeddedRocksDB` and other `supportsDelete()` engines
- CI: Add SQLancer++ check
- Perf regression: QueryConditionCache ineffective in self-joins (since #94062)
- `interval_conversions` vector has wrong values causing `CAST` from smaller to larger interval units to return incorrect results
- Docs
- C++ not yet supported