clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Add regression test for distributed_product_mode='local' with default_database (#58766)
- Spawn background schedule pool threads lazily
- Properly handle table_readonly setting in DDLWorker and replicated engines
- Fix LOGICAL_ERROR for reused materialized CTE filtered by IN over another materialized CTE
- Parallelize copyFile in DiskObjectStorageTransaction
- Optimize Profile Events by using Per CPU counters for server-wide and users
- Surface real callback exceptions in ZipArchiveReader instead of "Code = -100"
- Fix countmin statistics bug when comparing float32 column with float64
- Fix heap-buffer-overflow in syntax error formatting (parseQuery)
- Support column matcher expansion for default value expressions and index expressions
- Docs
- C++ not yet supported