2025 Changelog

ClickHouse release v25.6.12.10-stable (b08b830e00f) FIXME as compared to v25.6.11.18-stable (726d033db70)

Improvement

• Backported in #87033: Fix misleading “specified upload does not exist” error, which occurs when the original exception is lost in multipart upload because of a race condition. #86725 (Julia Kartseva).

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

• Backported in #86877: Fix GROUP BY Nullable(JSON). #86410 (Pavel Kruglov).
• Backported in #87086: Fix Backup db engine raising exception on query with zero sized part files. #86563 (Max Justus Spransy).
• Backported in #87068: Correctly cast output of PREWHERE after splitting it into multiple steps. #87040 (Antonio Andelic).