clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix(Conversion): toInt32OrDefault for Decimal overflow
- `Style check` commit status silently dropped from PR commits
- `min` over an `Array`/`Tuple`/`Map` with `Nullable` elements depends on block layout: a NULL-bearing value never wins inside one block but wins on the state-merge path
- Commit-order projection never selected: `_partition_id` fails the column check
- `_part_offset` returns projection part offset with `prefer_optimize_projection`
- Parameterized view shadows built-in table function in DESCRIBE and INSERT
- INSERT SELECT into Distributed rejects WITH-alias source args
- Named collections classed static: `<s3>` endpoint credentials no longer reach them
- Arrow dictionary/Nested reads drop `clickhouse.opaque` tag, corrupting values
- Partitions page: "same data and number of rows" claim is contradicted by the live playground (tables hold different dataset snapshots)
- Docs
- C++ not yet supported