clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add test: `MergeTreePartInfo::tryParsePartName` LEGACY_MAX_LEVEL normalization branch untested
- Add test: `addMilliseconds`/`addMicroseconds`/`addNanoseconds` (and subtract counterparts) untested with `DateTime64` + timezone (3-arg form)
- Add test: `read_rows` after external GROUP BY is not asserted anywhere — `SourceFromNativeStream::getReadProgress` override untested
- Add test: `JSONExtractKeysAndValues` with non-constant `LowCardinality` JSON input column is untested
- Add test: `indexOf` and `countEqual` with constant non-NULL array and `Nullable` value column carrying NULLs is untested
- Add test: Concurrent `ALTER ... UPDATE` + `REPLACE PARTITION` on `ReplicatedMergeTree` exercising the new initiator-side intent + cancelInPartition guards
- Optimize row order if no order by
- Add long tag to 00446_clear_column_in_partition_concurrent_zookeeper
- Puffin file reader
- Fix abort when nested coalesce is used with skip-index disjunction tracking
- Docs
- C++ not yet supported