clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Prototype own CMake configuration for `llvm-project`
- Query type is ExceptionBeforeStart but memory_usage > 0 with multiple threads
- Add SVE support for ColumnVector, aggregate sum, function unary arithmetic and functions comparison
- `NOT NULL` silently ignored in Replicated database when `data_type_default_nullable=1`
- Using strings when inserting values for Map causes significant CPU consumption and slows down insertion
- ThreadSanitizer (STID: 1805-6912)
- `dictGetOrDefault` does not short-circuit evaluation of `default` argument
- [CI crash] Failure during query plan building for table expression
- ClickHouse does not close HTTP connection to jdbc-bridge on query cancellation
- Regression in parameterized views (`After parameters substitution of parameterized view ... the actual schema does not match the defined one`)
- Docs
- C++ not yet supported