clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Provide Bloomfilter(),HyperLogLog() type scalar functions that work like get_dict()
- Logical error: Inconsistent table names
- Don't execute subqueries when trivial false predicates exist
- Allow default values for WITH FILL
- Different result depending on `enable_named_columns_in_function_tuple`
- Index not validated against type during creation
- Different Results When Running Multiple SQL Statements Together vs. Individually in ClickHouse
- Server is logging AUTHENTICATION_FAILED errors but authentication is actually working fine
- GROUP BY WITH CUBE / WITH ROLLUP works incorrectly in the presence of tuples in GROUP BY keys
- [WIP] Add feature to impersonate/proxy user sessions
- Docs
- C++ not yet supported