clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Memory/Merge/View return stale Polygon array sizes after MultiPolygon promotion
- Unrewritten parts serve old `.sizeN`/`length` after `MODIFY COLUMN` to `Multi*`
- Parameterized alias `AS {a:Identifier}` lost after view/handler re-parse
- Row policy with DateTime64/Time64 query parameter re-parses to wrong value
- Parquet: read columns with the legacy null converted type 24
- A table created `AS postgresql(...)` or `AS mysql(...)` takes its connection pool settings from the context that loads it, so they change after a restart
- Async insert deduplication fails with `NOT_IMPLEMENTED` for materialized views whose output exceeds `min_insert_block_size_rows`, even if the view reduces rows
- Fix TOO_MANY_QUERY_PLAN_OPTIMIZATIONS when ORDER BY reads the argument of length, empty or notEmpty
- Add function hasTokenStartingWith with text index support
- Dictionary does not pick up ALTER NAMED COLLECTION until SYSTEM RELOAD DICTIONARY
- Docs
- C++ not yet supported