clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- exact_rows_before_limit wrong for numbers/primes/generate_series with LIMIT
- Logical error 'Not-ready Set' when text index postprocessor uses IN (SELECT ...)
- Harden JSON AST deserialization: seven shapes found by json_ast_sql_parser_fuzzer
- clickhouse local hangs at 100% CPU on any query when interactive_delay is 0 or below a poll cycle
- Fix LOGICAL_ERROR on a lazy FINAL text index read with different PREWHERE and WHERE predicates
- Key the patch join cache by the structure of the blocks it stores
- Analyzer: keep operand order when an OR chain of equalities is rewritten to IN
- Keep null-aware set atoms out of the nullable-key exact-count safeguard
- Add promql_exact_rate setting for exact rate and counter reset mode
- Fix(PromQL): Accept signed PromQL @ timestamps
- Docs
- C++ not yet supported