clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- [CI crash] Double deletion of MergeTreeDataPartCompact in multi_index
- Fix `merge` function failing with columns not present in all merged tables
- Add direct include for getenv usages
- Support `UNIQUE` predicate that tests for no duplicate rows in a subquery
- Add new metric - jemalloc fragmentation
- Fix abort in DataTypeTuple::createColumn when serialization is SerializationDetached
- Optimize `json.path[N].nested.path` to `json.path[].nested.path[N]`
- improvement: use INCORRECT_DATA instead of LOGICAL_ERROR for data-reachable deserialization checks
- [CI crash] Double deletion of MergeTreeDataPartCompact
- Fix parsing of shell-style quotes in arguments for the executable table function
- Docs
- C++ not yet supported