clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Partially dropped database breaks table dependencies
- Does Refreshable Materialized Views with the Append clause use transient values ?
- 03100_lwu_40_cleanup_race is flaky
- groupArray on Hive-partitioned S3 parquet fails with type conversion error in 25.3 (fixed since 25.8)
- `CREATE MATERIALIZED VIEW mv.tb ON CLUSTER TO db.table` command checking for db and table existence on the current node
- test_backup_restore_on_cluster/test_concurrency.py is flaky
- Support Kafka engine ALTER ADD COLUMN
- ATTACH for MergeTree on `s3_plain` is broken
- DeltaLake functions missing from macOS installation
- 00159_parallel_formatting_csv_and_friends timed out
- Docs
- C++ not yet supported