ClickHouse/docs/changelogs/v24.9.2.42-stable.md

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1	2024

2024 Changelog

ClickHouse release v24.9.2.42-stable (de7c791a2e) FIXME as compared to v24.9.1.3278-stable (6d058d82a8)

Improvement

• Backported in #70091: Add show_create_query_identifier_quoting_rule to define identifier quoting behavior of the show create query result. Possible values: - user_display: When the identifiers is a keyword. - when_necessary: When the identifiers is one of {"distinct", "all", "table"}, or it can cause ambiguity: column names, dictionary attribute names. - always: Always quote identifiers. #69448 (tuanpach).
• Backported in #70100: Follow-up to https://github.com/ClickHouse/ClickHouse/pull/69346 Point 4 described there will work now as well:. #69563 (Vitaly Baranov).
• Backported in #70048: Add new column readonly_duration to the system.replicas table. Needed to be able to distinguish actual readonly replicas from sentinel ones in alerts. #69871 (Miсhael Stetsyuk).

Bug Fix (user-visible misbehavior in an official stable release)

• Backported in #70193: Fix crash when executing create view t as (with recursive 42 as ttt select ttt);. #69676 (Han Fei).
• Backported in #70083: Closes #69752. #69985 (pufit).
• Backported in #70070: Fixes Block structure mismatch for queries with nested views and WHERE condition. Fixes #66209. #70054 (Nikolai Kochetov).
• Backported in #70168: Fix wrong LOGICAL_ERROR when replacing literals in ranges. #70122 (Pablo Marcos).
• Backported in #70238: Check for Nullable(Nothing) type during ALTER TABLE MODIFY COLUMN/QUERY to prevent tables with such data type. #70123 (Pavel Kruglov).
• Backported in #70205: Fix wrong result with skipping index. #70127 (Raúl Marín).
• Backported in #70185: Fix data race in ColumnObject/ColumnTuple decompress method that could lead to heap use after free. #70137 (Pavel Kruglov).
• Backported in #70253: Fix possible hung in ALTER COLUMN with Dynamic type. #70144 (Pavel Kruglov).
• Backported in #70230: Use correct max_types parameter during Dynamic type creation for JSON subcolumn. #70147 (Pavel Kruglov).
• Backported in #70217: Fix the password being displayed in system.query_log for users with bcrypt password authentication method. #70148 (Nikolay Degterinsky).
• Backported in #70267: Respect setting allow_simdjson in JSON type parser. #70218 (Pavel Kruglov).

NOT FOR CHANGELOG / INSIGNIFICANT

• Backported in #70052: Improve stateless test runner. #69864 (Alexey Katsman).
• Backported in #70284: Improve pipdeptree generator for docker images. - Update requirements.txt for the integration tests runner container - Remove some small dependencies, improve helpers/retry_decorator.py - Upgrade docker-compose from EOL version 1 to version 2. #70146 (Mikhail f. Shiryaev).
• Backported in #70261: Update test_storage_s3_queue/test.py. #70159 (Kseniia Sumarokova).