clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Restore a dictionary left unusable by a rejected DETACH ... PERMANENTLY under concurrent DDL
- count() with ARRAY JOIN silently ignores mismatched array sizes while SELECT * correctly throws SIZES_OF_ARRAYS_DOESNT_MATCH
- Fix SYSTEM RELOAD/UNLOAD DICTIONARY ON CLUSTER losing the current database
- Fix use-of-uninitialized-value in direct JOIN over a MergeTree table read with STREAM
- Fix LOGICAL_ERROR when loading an existing Compact part under a non-adaptive table policy
- Unify temporary part directory claim and reclaim, make part construction intent explicit
- Fix NOT_FOUND_COLUMN_IN_BLOCK for a correlated subquery referencing an outer column via a subcolumn function
- Fix CI crash reporter naming logical errors after query-echoed text
- Make `INSERT ... SELECT` compatible with async insert
- Skip building the check query for mutations when index analysis proves a part is untouched
- Docs
- C++ not yet supported