clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Lambda in ALIAS column fails in merge() with enable_analyzer=1 (BAD_ARGUMENTS)
- (Hyper) LogLogBeta cardinality estimator
- Filter pushdown generates redundant filters
- Flaky test: test_backup_restore_s3/test.py::test_backup_to_s3_copy_multipart_check_error_message[data_file_name_from_first_file_name]
- deltaLakeCluster does't report the compressed bytes
- URL functions that are compliant with RFC-3986
- wrong query result when querying from parquet files with WHERE, chained CTEs and LIMIT clauses (since 25.11)
- TTL on table does not work properly
- Test 01926_order_by_desc_limit failed. Reason: Timeout!
- Flaky test: 03032_dynamically_resize_filesystem_cache_2
- Docs
- C++ not yet supported