clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix join on nulls optimization
- Add setting enable_optimize_query_tree_logical_expression
- Try to fix flaky `test_reload_clusters_config`
- Function and SQL syntax proposals for improving the readability of nested function calls.
- Slow query with ARRAY JOIN and with Join Table with 2 joined columns
- Integration test `test_backup_restore_on_cluster/test_disallow_concurrency.py::test_concurrent_restores_on_same_node` is flaky (a bit)
- Unstable result of using stochasticLinearRegressionState
- Analyzer: issue with pushing down the condition from the view with FINAL to the distributed table
- Replicated table from PostgreSQL - "Decimal value is too big"
- Parametrized view - Is it possible to use parameter in subquery (maybe there is an issue with array)?
- Docs
- C++ not yet supported