clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- [WIP] Fix timestamp in Iceberg
- [RFC] Skip granules based on the OFFSET for read in order
- MaterializedView doesn't update it's dependencies on ALTER QUERY
- Query loses “merge sorted streams” optimization when querying through a VIEW over Distributed table
- Allow to modify column type if its subcolumns are used in the key expression but are not affected by this alter.
- Distinguish regular and wildcard (prefix) grants in system.grants
- For input formats with column names, search columns case-insensitively if there is no ambiguity
- system.errors reports UNKNOWN_FILE_SIZE error for url() engine even though query succeeds
- `columns_substreams.txt` doesn't participate in checksum calculation
- Logical error: 'Files metadata is empty' with fault injection
- Docs
- C++ not yet supported