clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add whole batches at once in the quantileExact family
- Require `READ` and `WRITE` on the source to create a table from a table function
- Refuse MongoDB authentication with credentials of the server process
- Write the output format prefix before totals and extremes in the client
- Docs: Fix return-type documentation for `uniqTheta` set operations
- Cassandra dictionary source fails on `uuid` columns since 24.9: `Cannot parse input: expected 'eof' before: '\0'`
- MaterializedPostgreSQL: reading a Nullable column's .null subcolumn (x IS NULL, count(x)) fails with NOT_FOUND_COLUMN_IN_BLOCK on an empty table in 26.8
- Fix Hive partition with empty partition key
- Plan-based parallel replicas: keep filter fusion into `ARRAY JOIN` for steps that are not shipped
- Add SQL-managed query masking rules: `CREATE QUERY MASKING RULE`
- Docs
- C++ not yet supported