clickhouse
https://github.com/clickhouse/clickhouse
C++
ClickHouse is a free analytics DBMS for big data
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- Issues
- Cherry pick #105894 to 25.8: Fix `IN Array` with negative values for distributed queries
- A MergeTree row disappears when a conjunctive filter is evaluated in one step
- Scalar-subquery equality loses the only matching row after predicate materialization
- MergeTree ORDER BY ... LIMIT 1 equality loses the only matching row after predicate materialization
- Reading ".null" subcolumn from Nullable(JSON) returns nullmap instead of JSON key value
- If it's a DDL query for a table in Replicated or Shared database, and it has ON CLUSTER db_name, treat it as usual
- INSERT into JSON column with minmax skip index crashes on mixed-type arrays
- Support SETTINGS ALL READONLY in SQL settings profiles
- Logical error: Bad cast from type A to B (STID: 3336-2f87)
- A bad cast exception occurs in Redis Dictionary when using the CACHE layout with simple storage types
- Docs
- C++ not yet supported