clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Optimize PREWHERE by filtering text index hints before string reads
- Sync shared files changed by the private `AmberMap` PR
- Fix `uniq`, `DISTINCT` and hash `JOIN` treating different `JSON` and `Dynamic` values as equal
- Remember a plan with parallel replicas that automatic mode could not use
- Hide memory addresses in Kafka logs
- chore(docs): remove upgrade schedule section for BYOC operations docs
- After SYSTEM RESTORE REPLICA, lightweight UPDATE fails with "Found patch part ... that intersects mutation" (LOGICAL_ERROR) and can silently skip rows
- Clamp random `merge_max_block_size` in test `02371_select_projection_normal_agg`
- Share the values of a sparse column in `ColumnSparse::index` when the rows are its own non-default rows
- Allow Patch Version and Sign Columns
- Docs
- C++ not yet supported