clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- no-fast-tests label drops CH Inc sync status marker
- Report what the listing held when Iceberg or Paimon finds no metadata file
- Enable the UBSan check for unsigned integer overflows
- Check cancellation while searching a constant array
- Let the has() to IN rewrite reach a scalar subquery array and a LowCardinality needle
- JSON type: a boolean sharing an array with exactly one other scalar type is silently rewritten into that type
- Schema inference: a quoted JSON string first seen past the inference sample is parsed as a number and silently loses its text ("007" -> 7, "" -> 0)
- Refused DROP/TRUNCATE DATABASE cancels merges forever on surviving tables
- `RIGHT JOIN` over a joined left side: parallel replicas throw LOGICAL_ERROR
- Date/DateTime `CASE` with a string literal takes ELSE: `accurateEquals` guard
- Docs
- C++ not yet supported