2026 Changelog

ClickHouse release v25.3.14.14-lts (84d6b30ad52) FIXME as compared to v25.3.13.19-lts (d6202689cb5)

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

• Backported in #93844: Fix reading subcolumns from a column with dot in the name in some cases. Resolves #81261, #82058, #88169. #87205 (Pavel Kruglov).
• Backported in #94156: Fix dynamic subcolumns resolution in column aliases in analyzer. Previously dynamic subcolumn in column alias was wrapped in getSubcolumn and in some cases could be not resolved at all. Closes #91434. #92583 (Pavel Kruglov).
• Backported in #95348: Fix attaching Replicated DBs when the interserver host changed after restarting. #93779 (Tuan Pham Anh).
• Backported in #94354: Fix bad check for typed paths in JSON. Checj was introduced in https://github.com/ClickHouse/ClickHouse/pull/92842 and can lead to error during existing tables startup. #94070 (Pavel Kruglov).
• Backported in #95199: Fix function to subcolumns optimization not applied to subcolumns. #94323 (Pavel Kruglov).
• Backported in #94925: Fix a crash during ANY LEFT JOIN optimization when isNotNull is evaluated on a missing column. #94600 (Molly).
• Backported in #94829: Fix permission issues in BACKUP/RESTORE operations. #94617 (Pablo Marcos).
• Backported in #95636: Fix incorrect primary key and skip index pruning for predicates involving toWeek, toYearWeek, toStartOfWeek, toLastDayOfWeek, and toDayOfWeek, and fix exceptions in some of these functions for valid queries with LowCardinality(String). #94816 (Nihal Z. Miaji).
• Backported in #95147: The getURLHostRFC function was missing bounds checks before dereferencing pointers. When an empty string was passed to domainRFC, it would read uninitialized memory, triggering MSan errors. #94851 (Alexey Milovidov).
• Backported in #95569: The password argument of the redis table function now will be masked in the logs and system tables (e.g.: query_log). #95325 (János Benjamin Antal).

Build/Testing/Packaging Improvement

• Backported in #95188: Use curl 8.18.0. #94742 (Konstantin Bogdanov).
• Backported in #95236: Use postgres to REL_18_1. #95189 (Konstantin Bogdanov).
• Backported in #95249: Use libexpat 2.7.3. #95218 (Konstantin Bogdanov).