clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Shared-ptr copy (not clone) of IN first argument at line 616 causes `NOT_FOUND_COLUMN_IN_BLOCK` for multi-column tuple IN inside IF
- simhash family of functions uses only 32 bits off the 64 bits space
- `isNotDistinctFrom` returns inconsistent results for NaN depending on `Nullable` wrapping
- `createExpressionsAnalyzer` fails with `UNKNOWN_IDENTIFIER` for default expressions referencing dotted column names without backticks
- GRANT wildcard issue in different ClickHouse versions
- *hash joins with hashtable use only subset of join keys
- PARTITION BY key IF condition
- Document SSL options for MySQL database/table engines and table function
- allow serialization of all sorting types
- Prototype: Remote Reading Manager for MergeTree S3 prefetch
- Docs
- C++ not yet supported