clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix: don't wipe LDAP user roles on interserver authentication
- Add `force_data_skipping_indexes` alias for `force_data_skipping_indices`
- createLightweightDeleteCommand does not copy mutation_version from source command
- Greedy startsWith prefix matching causes literal values starting with 'from_env'/'from_zk' to be misinterpreted as substitution directives
- intDivOrNull/moduloOrNull null map only checks b==0, misses INT_MIN/-1 FPE case
- sparseGrams ignores max_ngram_length when min_cutoff_length (4th arg) is provided
- block.clear() in set index deserializeBinary destroys reused granule structure, disabling non-bulk index filtering
- UnionNode::updateTreeHashImpl ignores ignore_cte option, causing same distributed IN hash mismatch for UNION CTEs
- expandSelectorGlobImpl early-returns without expanding single-char enum when path also contains range glob
- isFloat() in read-in-order optimization doesn't unwrap LowCardinality, causing wrong ORDER BY for LowCardinality(Float64) with NaN
- Docs
- C++ not yet supported