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ClickHouse v20.8.3.18 Release Notes

Release Date: 2020-09-18 // over 3 years ago

  • 🐛 Bug Fix

    • 🛠 Fix the issue when some invocations of extractAllGroups function may trigger "Memory limit exceeded" error. This fixes #13383. #14889 (alexey-milovidov).
    • 🛠 Fix SIGSEGV for an attempt to INSERT into StorageFile(fd). #14887 (Azat Khuzhin).
    • 🛠 Fix rare error in SELECT queries when the queried column has DEFAULT expression which depends on the other column which also has DEFAULT and not present in select query and not exists on disk. Partially fixes #14531. #14845 (alesapin).
    • 🛠 Fixed missed default database name in metadata of materialized view when executing ALTER ... MODIFY QUERY. #14664 (tavplubix).
    • 🛠 Fix bug when ALTER UPDATE mutation with Nullable column in assignment expression and constant value (like UPDATE x = 42) leads to incorrect value in column or segfault. Fixes #13634, #14045. #14646 (alesapin).
    • 🛠 Fix wrong Decimal multiplication result caused wrong decimal scale of result column. #14603 (Artem Zuikov).
    • ➕ Added the checker as neither calling lc->isNullable() nor calling ls->getDictionaryPtr()->isNullable() would return the correct result. #14591 (myrrc).
    • Cleanup data directory after Zookeeper exceptions during CreateQuery for StorageReplicatedMergeTree Engine. #14563 (Bharat Nallan).
    • 🛠 Fix rare segfaults in functions with combinator -Resample, which could appear in result of overflow with very large parameters. #14562 (Anton Popov).

    👌 Improvement