clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add aggregation memory tracker for two-level conversion
- feat: implement parameterized CTE support
- Read empty Nullable(String) as empty string in CSV via input_format_csv_empty_string_is_not_null
- Enumerating time zones leads to accumulation of 2.9 GB of RAM.
- Add system.documentation table
- Proper parsing of decimal timestamps for DateTime64
- Fix flaky test 04007_pipeline_stuck_ping_pong_deadlock
- Fix exception 'txn' when AST fuzzer runs with an implicit transaction
- Add experimental Iguana compression codec (draft; default=Iguana for perf testing)
- Reject duplicate paths for `encrypted` disks
- Docs
- C++ not yet supported