diff --git a/docs/cloud/reference/01_changelog/02_release_notes/24_02.md b/docs/cloud/reference/01_changelog/02_release_notes/24_02.md
index e237a79b22e..759ec40dec9 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/24_02.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/24_02.md
@@ -4,7 +4,7 @@ title: 'v24.2 changelog for Cloud'
 description: 'Fast release changelog for v24.2'
 keywords: ['changelog']
 sidebar_label: '24.2'
-sidebar_position: 12
+sidebar_position: 13
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/24_05.md b/docs/cloud/reference/01_changelog/02_release_notes/24_05.md
index 01f8bf5fd8d..d1d5f99b9dc 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/24_05.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/24_05.md
@@ -4,7 +4,7 @@ title: 'v24.5 changelog for Cloud'
 description: 'Fast release changelog for v24.5'
 keywords: ['changelog', 'cloud']
 sidebar_label: '24.5'
-sidebar_position: 11
+sidebar_position: 12
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/24_06.md b/docs/cloud/reference/01_changelog/02_release_notes/24_06.md
index 32d8ebaf0d8..82a3932eecf 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/24_06.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/24_06.md
@@ -4,7 +4,7 @@ title: 'v24.6 changelog for Cloud'
 description: 'Fast release changelog for v24.6'
 keywords: ['changelog', 'cloud']
 sidebar_label: '24.6'
-sidebar_position: 10
+sidebar_position: 11
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/24_08.md b/docs/cloud/reference/01_changelog/02_release_notes/24_08.md
index f81d2720d5e..fdabb363a64 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/24_08.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/24_08.md
@@ -4,7 +4,7 @@ title: 'v24.8 changelog for Cloud'
 description: 'Fast release changelog for v24.8'
 keywords: ['changelog', 'cloud']
 sidebar_label: '24.8'
-sidebar_position: 9
+sidebar_position: 10
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/24_10.md b/docs/cloud/reference/01_changelog/02_release_notes/24_10.md
index 54381334469..5741fbda4db 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/24_10.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/24_10.md
@@ -4,7 +4,7 @@ title: 'v24.10 changelog for Cloud'
 description: 'Fast release changelog for v24.10'
 keywords: ['changelog', 'cloud']
 sidebar_label: '24.10'
-sidebar_position: 8
+sidebar_position: 9
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/24_12.md b/docs/cloud/reference/01_changelog/02_release_notes/24_12.md
index b9c3c6d7321..c0ec6dbbaa2 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/24_12.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/24_12.md
@@ -4,7 +4,7 @@ title: 'v24.12 changelog for Cloud'
 description: 'Fast release changelog for v24.12'
 keywords: ['changelog', 'cloud']
 sidebar_label: '24.12'
-sidebar_position: 7
+sidebar_position: 8
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/25_04.md b/docs/cloud/reference/01_changelog/02_release_notes/25_04.md
index 59f2d8afd9b..262f2240595 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/25_04.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/25_04.md
@@ -4,7 +4,7 @@ title: 'v25.4 changelog for Cloud'
 description: 'Fast release changelog for v25.4'
 keywords: ['changelog', 'cloud']
 sidebar_label: '25.4'
-sidebar_position: 6
+sidebar_position: 7
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/25_06.md b/docs/cloud/reference/01_changelog/02_release_notes/25_06.md
index b14214b1a5c..ec35d6ffee6 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/25_06.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/25_06.md
@@ -4,7 +4,7 @@ title: 'v25.6 changelog for Cloud'
 description: 'Fast release changelog for v25.6'
 keywords: ['changelog', 'cloud']
 sidebar_label: '25.6'
-sidebar_position: 5
+sidebar_position: 6
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/25_08.md b/docs/cloud/reference/01_changelog/02_release_notes/25_08.md
index 56158de17c4..a1968aa1141 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/25_08.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/25_08.md
@@ -4,7 +4,7 @@ title: 'v25.8 changelog for Cloud'
 description: 'Fast release changelog for v25.8'
 keywords: ['changelog', 'cloud']
 sidebar_label: '25.8'
-sidebar_position: 4
+sidebar_position: 5
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/25_10.md b/docs/cloud/reference/01_changelog/02_release_notes/25_10.md
index 32cf1d18691..8d3af5978e8 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/25_10.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/25_10.md
@@ -4,7 +4,7 @@ title: 'v25.10 changelog for Cloud'
 description: 'Changelog for v25.10'
 keywords: ['changelog', 'cloud']
 sidebar_label: '25.10'
-sidebar_position: 3
+sidebar_position: 4
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/25_12.md b/docs/cloud/reference/01_changelog/02_release_notes/25_12.md
index b96ba16190f..1d07e04a0a1 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/25_12.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/25_12.md
@@ -4,7 +4,7 @@ title: 'v25.12 changelog for Cloud'
 description: 'Changelog for v25.12'
 keywords: ['changelog', 'cloud']
 sidebar_label: '25.12'
-sidebar_position: 2
+sidebar_position: 3
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/26_2.md b/docs/cloud/reference/01_changelog/02_release_notes/26_2.md
index 05f1d3724d2..c2e341adba3 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/26_2.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/26_2.md
@@ -4,7 +4,7 @@ title: 'v26.2 changelog for Cloud'
 description: 'Changelog for v26.2'
 keywords: ['changelog', 'cloud']
 sidebar_label: '26.2'
-sidebar_position: 1
+sidebar_position: 2
 doc_type: 'changelog'
 ---
 
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/26_4.md b/docs/cloud/reference/01_changelog/02_release_notes/26_4.md
new file mode 100644
index 00000000000..2f3526b3cc6
--- /dev/null
+++ b/docs/cloud/reference/01_changelog/02_release_notes/26_4.md
@@ -0,0 +1,802 @@
+---
+slug: /changelogs/26.4
+title: 'v26.4 changelog for Cloud'
+description: 'Changelog for v26.4'
+keywords: ['changelog', 'cloud']
+sidebar_label: '26.4'
+sidebar_position: 1
+doc_type: 'changelog'
+---
+
+## Backward Incompatible Changes {#backward-incompatible-changes}
+
+### Query and syntax changes {#query-and-syntax-changes}
+
+* The `IN` operator now uses exact value semantics for the `Bool` type: only `0` and `1` in the set match `Bool` values. Previously, numeric values greater than `255` in the `IN` set were incorrectly clamped to true, so `SELECT CAST(1, 'Bool') IN (256)` returned `1`. It now correctly returns `0`. [#93115](https://github.com/ClickHouse/ClickHouse/pull/93115) ([Ashrith Bandla](https://github.com/ashrithb)).
+* Fixed `NOT` operator precedence to match the SQL standard: `NOT` now binds looser than `IS NULL`, `BETWEEN`, `LIKE`, and arithmetic operators. For example, `NOT (x) IS NULL` is now parsed as `NOT (x IS NULL)` instead of `(NOT x) IS NULL`. This may change the result of queries that relied on the previous (non-standard) behavior. [#97680](https://github.com/ClickHouse/ClickHouse/pull/97680) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* `SELECT` is no longer allowed as a bareword identifier in a `WITH` expression list element. [#101059](https://github.com/ClickHouse/ClickHouse/pull/101059) ([Aruj Bansal](https://github.com/arujbansal)).
+* The `IN` operator now rejects lossy `Decimal` conversions inside composite types (`Tuple`, `Array`, `Map`), making its behavior consistent with top-level scalar comparisons. Previously, precision checks were enforced only for top-level scalar values: for example, `CAST('33.3', 'Decimal64(1)') IN (33.33)` correctly returned `0`, but `CAST(['33.3'], 'Array(Decimal64(1))') IN ([33.33])` incorrectly returned `1`. Both cases now correctly return `0`. [#101812](https://github.com/ClickHouse/ClickHouse/pull/101812) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+
+### Data type changes {#data-type-changes}
+
+* Data type serialization versions are now propagated to nested data types. For example, the String serialization version `with_size_stream` was previously applied only to top-level String columns and Tuple elements; it is now applied to any String type inside any nested type such as Array, Map, Variant, or JSON. This is controlled by the MergeTree setting `propagate_types_serialization_versions_to_nested_types`, which is now enabled by default. After this change, newly created data parts cannot be read by older versions, but old parts can be read on the new version. Upgrades are safe, but downgrades are not. [#94859](https://github.com/ClickHouse/ClickHouse/pull/94859) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed endianness of `QBit` binary serialization to use little-endian format. [#101378](https://github.com/ClickHouse/ClickHouse/pull/101378) ([Raufs Dunamalijevs](https://github.com/rienath)).
+
+### Storage and index changes {#storage-and-index-changes}
+
+* Corrected the metadata of normal projections so that projections with multi-column sorting keys are properly recognized. [#91352](https://github.com/ClickHouse/ClickHouse/pull/91352) ([Amos Bird](https://github.com/amosbird)).
+* Fixed skip index files not respecting the `replace_long_file_name_to_hash` setting, which caused "File name too long" errors and broken index reads for indices with long names. Skip index filenames are now hashed when they exceed `max_file_name_length`, similar to column files. This is backward compatible (new servers read old parts), but downgrading (or old servers during a rolling upgrade) may cause long-named indices to be ignored. [#97128](https://github.com/ClickHouse/ClickHouse/pull/97128) ([Raúl Marín](https://github.com/Algunenano)).
+
+### Removed features {#removed-features}
+
+* Removed the `hypothesis` skip index type. It was an obscure, experimental feature with limited practical use. Creating tables with `INDEX ... TYPE hypothesis` now produces an error. [#96874](https://github.com/ClickHouse/ClickHouse/pull/96874) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Removed the experimental `detectProgrammingLanguage` function. [#99567](https://github.com/ClickHouse/ClickHouse/pull/99567) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+
+### Settings and configuration changes {#settings-and-configuration-changes}
+
+* Changed the default value of `mysql_datatypes_support_level` from empty to `decimal,datetime64,date2Date32`, enabling proper mapping of MySQL `DATE` to `Date32`, `DECIMAL`/`NUMERIC` to `Decimal`, and `DATETIME`/`TIMESTAMP` with precision to `DateTime64` by default. Previously, MySQL `DATE` columns were mapped to `Date`, which cannot represent dates before 1970-01-01, causing data corruption. [#97716](https://github.com/ClickHouse/ClickHouse/pull/97716) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+
+### Insert and deduplication changes {#insert-and-deduplication-changes}
+
+* Async insert is now enabled by default — ClickHouse batches all small inserts by default. This is governed by the `compatibility` setting: setting `compatibility` to a version lower than 26.2 restores the previous default of `false`. Async inserts can be turned on or off at several levels: in the config users profiles, for the session, for the query, or for the MergeTree table. [#97590](https://github.com/ClickHouse/ClickHouse/pull/97590) ([Sema Checherinda](https://github.com/CheSema)).
+
+### System table changes {#system-table-changes}
+
+* Reverted the `skip_indexes` column in `system.query_log`. [#101018](https://github.com/ClickHouse/ClickHouse/pull/101018) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+
+### Other breaking changes {#other-breaking-changes}
+
+* `mergeTreeAnalyzeIndexes{,UUID}` now accepts an array of part names instead of a regexp, since regexps are slow (experimental feature). [#98474](https://github.com/ClickHouse/ClickHouse/pull/98474) ([Azat Khuzhin](https://github.com/azat)).
+* The H3 library has been updated to v4, which improves the precision of length, area, and other metric calculations. This change is backward incompatible because the new results differ from previous ones. [#100348](https://github.com/ClickHouse/ClickHouse/pull/100348) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Changed how the `Merge` table handles virtual columns. If the underlying table contains `_table` or `_database`, these columns are read from storage; otherwise they are filled after the read step using the expression step. [#101742](https://github.com/ClickHouse/ClickHouse/pull/101742) ([Mikhail Artemenko](https://github.com/Michicosun)).
+
+## New Features {#new-features}
+
+### Functions {#functions}
+
+* Added the `naturalSortKey(s)` function for natural sort keys. [#90322](https://github.com/ClickHouse/ClickHouse/pull/90322) ([Nazarii Piontko](https://github.com/nazarii-piontko)).
+* Added the `arrayAutocorrelation(arr [, max_lag])` function, which computes the normalized autocorrelation of a numeric array for each lag. Supports integer, float, and decimal array types. [#94776](https://github.com/ClickHouse/ClickHouse/pull/94776) ([Wenyu Chen](https://github.com/wenyuchen96)).
+* The `has()` function is now supported for the JSON type to check path existence, similar to `Map`. [#96927](https://github.com/ClickHouse/ClickHouse/pull/96927) ([DQ](https://github.com/il9ue)).
+* Added the `mergeTreeTextIndex(database, table, index)` table function, which reads data directly from a text index. It can be used for introspection or for performing aggregations on top of text index data. [#97003](https://github.com/ClickHouse/ClickHouse/pull/97003) ([Anton Popov](https://github.com/CurtizJ)).
+* Added the `obfuscateQuery` SQL function. [#98305](https://github.com/ClickHouse/ClickHouse/pull/98305) ([Xuewei Wang](https://github.com/Sallery-X)).
+* Added the `caseFoldUTF8` and `removeDiacriticsUTF8` functions for Unicode case folding and diacritical mark removal. [#98973](https://github.com/ClickHouse/ClickHouse/pull/98973) ([George Larionov](https://github.com/george-larionov)).
+* The `printf` function now supports non-constant format strings, allowing a different format pattern per row based on column values. [#98991](https://github.com/ClickHouse/ClickHouse/pull/98991) ([Yash](https://github.com/Onyx2406)).
+* Added the `highlight()` function, which wraps occurrences of search terms in a text string with HTML tags (default `<em>`/`</em>`). Supports ASCII case-insensitive matching, automatic merging of overlapping matches, and custom open/close tags. [#99131](https://github.com/ClickHouse/ClickHouse/pull/99131) ([Peng](https://github.com/fastio)).
+* Added the `normalizeUTF8NFKCCasefold` string function for NFKC_Casefold Unicode normalization, which combines NFKC normalization with case folding. [#99276](https://github.com/ClickHouse/ClickHouse/pull/99276) ([George Larionov](https://github.com/george-larionov)).
+* Added the `unicode_word` tokenizer for full-text indexes and the `tokens` function. It splits text using Unicode word boundary rules: ASCII words are formed with connector characters (underscore, colon, dot, single quote), while non-ASCII Unicode characters become single-character tokens. Configurable stop words default to common CJK punctuation. [#99357](https://github.com/ClickHouse/ClickHouse/pull/99357) ([Amos Bird](https://github.com/amosbird)).
+* Added the `arrayTranspose` function, which takes a two-dimensional array (matrix) and transposes it. [#101214](https://github.com/ClickHouse/ClickHouse/pull/101214) ([Vitaly Baranov](https://github.com/vitlibar)).
+* Added the `hasPhrase` function (alias `matchPhrase`) for phrase search (continuous sequences of tokens). Search is brute-force and not yet supported by the text index. [#101997](https://github.com/ClickHouse/ClickHouse/pull/101997) ([Elmi Ahmadov](https://github.com/ahmadov)).
+* Added `dotProduct` as a supported distance function for vector similarity indexes. Sort direction is now validated for all distance functions to prevent silently incorrect results. [#102254](https://github.com/ClickHouse/ClickHouse/pull/102254) ([Renzo](https://github.com/RenzoMXD)).
+* The `stem` function can now stem all words/tokens in `String`, `FixedString`, `Array([Fixed]String)`, `Nullable`, `LowCardinality`, and `Const` columns. [#99137](https://github.com/ClickHouse/ClickHouse/pull/99137) ([Jimmy Aguilar Mena](https://github.com/Ergus)).
+* The `stem` function is now non-experimental (previously, `allow_experimental_nlp_functions` had to be enabled). [#102399](https://github.com/ClickHouse/ClickHouse/pull/102399) ([Jimmy Aguilar Mena](https://github.com/Ergus)).
+* Added the `JSONAllValues` function, which returns all values from a `JSON` column as `Array(String)`, with values serialized in text representation and ordered by their path names. Added text index support for the `JSONAllValues` expression on `JSON` columns: when a text index is created on `JSONAllValues(json_column)`, it is automatically used to filter queries on `JSON` subcolumns (e.g. `json_column.key1 = 'value'`). [#100730](https://github.com/ClickHouse/ClickHouse/pull/100730) ([Anton Popov](https://github.com/CurtizJ)).
+* Added PostgreSQL-compatible units to the `EXTRACT` operator: `EPOCH`, `DOW`, `DOY`, `ISODOW`, `ISOYEAR`, `WEEK`, `CENTURY`, `DECADE`, and `MILLENNIUM`. Also fixed `EXTRACT(WEEK FROM date)`, which previously threw an error. [#100274](https://github.com/ClickHouse/ClickHouse/pull/100274) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Added the `toDaysInMonth()` function support via parser sugar for the SQL standard `OVERLAY` function syntax. The `overlay` function already exists; this adds support for the keyword-based form using `PLACING`, `FROM`, and `FOR` as separators. [#101681](https://github.com/ClickHouse/ClickHouse/pull/101681) ([Desel72](https://github.com/Desel72)).
+* `Date` and `Date32` values can now be added to `Time` and `Time64` values using the `+` operator, producing a `DateTime` or `DateTime64` result. For example, `SELECT toDate('2024-01-15') + toTime('14:30:25')` returns `2024-01-15 14:30:25`. The result is computed in the session timezone, and out-of-range results are handled according to the `date_time_overflow_behavior` setting. [#102421](https://github.com/ClickHouse/ClickHouse/pull/102421) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+
+### SQL and query features {#sql-and-query-features}
+
+* When a parameter has a `Nullable` type and is not specified, its value is now assumed to be `NULL`. [#93869](https://github.com/ClickHouse/ClickHouse/pull/93869) ([Vikash Kumar](https://github.com/vikashkumar2020)).
+* ClickHouse can now prune entire data parts in `SELECT` queries based on min/max statistics. [#94140](https://github.com/ClickHouse/ClickHouse/pull/94140) ([zoomxi](https://github.com/zoomxi)).
+* Added support for Materialized CTEs, which evaluate CTEs only once during query execution and store their results in temporary tables. [#94849](https://github.com/ClickHouse/ClickHouse/pull/94849) ([Dmitry Novik](https://github.com/novikd)).
+* Certain functions can now be used without parentheses in SQL. [#95949](https://github.com/ClickHouse/ClickHouse/pull/95949) ([Aly Kafoury](https://github.com/AlyHKafoury)).
+* Added the combined subcolumn syntax `json.@path` for the `JSON` type. It returns the literal value as `Dynamic` if the path holds a scalar, the sub-object as `Dynamic` if the path holds a nested object, or `NULL` if the path is absent. [#98788](https://github.com/ClickHouse/ClickHouse/pull/98788) ([Pavel Kruglov](https://github.com/Avogar)).
+* Added the `SOME` keyword for subquery expressions. It behaves identically to `ANY`. [#99842](https://github.com/ClickHouse/ClickHouse/pull/99842) ([Artem Kytkin](https://github.com/Vinceent)).
+* Added support for `SET TIME ZONE 'tz'` as an alias for `SET session_timezone`. [#99883](https://github.com/ClickHouse/ClickHouse/pull/99883) ([phulv94](https://github.com/phulv94)).
+* Added support for the SQL standard `VALUES` clause as a table expression in `FROM`, e.g. `SELECT * FROM (VALUES (1, 'a'), (2, 'b')) AS t(id, val)`. [#100143](https://github.com/ClickHouse/ClickHouse/pull/100143) ([Desel72](https://github.com/Desel72)).
+* Added support for SQL-standard compound interval literals with `TO` range qualifiers, e.g. `INTERVAL '1:30' HOUR TO MINUTE`, internally decomposed into sums of intervals. [#100453](https://github.com/ClickHouse/ClickHouse/pull/100453) ([Desel72](https://github.com/Desel72)).
+* Added the `SYSTEM FLUSH OBJECT STORAGE QUEUE db.table PATH 'x'` command for ordered and unordered modes. [#100709](https://github.com/ClickHouse/ClickHouse/pull/100709) ([Bharat Nallan](https://github.com/bharatnc)).
+
+### Table engines and storage {#table-engines-and-storage}
+
+* Added incremental read support for the `Paimon` table engine with Keeper-backed snapshot progress tracking, including targeted snapshot delta reads via `paimon_target_snapshot_id`. [#93655](https://github.com/ClickHouse/ClickHouse/pull/93655) ([XiaoBinMu](https://github.com/Binnn-MX)).
+* Added support for auxiliary ZooKeeper in `DatabaseReplicated`. [#95590](https://github.com/ClickHouse/ClickHouse/pull/95590) ([RinChanNOW](https://github.com/RinChanNOWWW)).
+* Added support for reading Iceberg v3 nanosecond timestamp types (`timestamp_ns` and `timestamptz_ns`), mapped to `DateTime64(9)` and `DateTime64(9, 'UTC')`. This enables ClickHouse to read Iceberg data with these types in the schema; it does not constitute full Iceberg v3 support, nor writing Iceberg v3 with these types. [#97132](https://github.com/ClickHouse/ClickHouse/pull/97132) ([Dmitry Kovalev](https://github.com/dk-github)).
+* Added `ALTER TABLE ... EXECUTE expire_snapshots('<timestamp>')` for Iceberg tables. [#97904](https://github.com/ClickHouse/ClickHouse/pull/97904) ([murphy-4o](https://github.com/murphy-4o)).
+* Added a new SLRU cache for Parquet metadata to improve read performance by removing the need to re-download files just to read metadata. [#98140](https://github.com/ClickHouse/ClickHouse/pull/98140) ([Grant Holly](https://github.com/grantholly-clickhouse)).
+* Added MergeTree skip index support for JSON columns using `JSONAllPaths` with `bloom_filter`, `tokenbf_v1`, `ngrambf_v1`, and `text` (inverted) index types, enabling granule skipping based on the set of JSON paths present in each granule. [#98886](https://github.com/ClickHouse/ClickHouse/pull/98886) ([Pavel Kruglov](https://github.com/Avogar)).
+* Added the `commit_order` projection index, which reorganizes data in insertion order. [#99004](https://github.com/ClickHouse/ClickHouse/pull/99004) ([Mikhail Artemenko](https://github.com/Michicosun)).
+* Added bucketed serialization for `Map` columns in MergeTree (`map_serialization_version = 'with_buckets'`). Keys are split into hash-based buckets so that reading a single key (`m['key']`) only reads one bucket instead of the entire column, providing a 2–49x speedup for single-key lookups depending on map size. The number of buckets and the bucketing strategy can be controlled by the new MergeTree settings `map_serialization_version`, `max_buckets_in_map`, `map_buckets_strategy`, `map_buckets_coefficient`, and `map_buckets_min_avg_size`. The setting `map_serialization_version_for_zero_level_parts` keeps basic serialization for inserts to avoid write overhead while merged parts use buckets. Skip indexes on `mapKeys`/`mapValues` are supported with bucketed serialization, and `optimize_functions_to_subcolumns` rewrites `m['key']` to a per-key subcolumn read when buckets are available. [#99200](https://github.com/ClickHouse/ClickHouse/pull/99200) ([Pavel Kruglov](https://github.com/Avogar)).
+
+### Insert and deduplication {#insert-and-deduplication}
+
+* Implemented new behavior of `max_insert_block_size_rows`, `max_insert_block_size_bytes`, `min_insert_block_size_rows`, and `min_insert_block_size_bytes` in squashing, governed by the compatibility setting `use_strict_insert_block_limits`. [#94207](https://github.com/ClickHouse/ClickHouse/pull/94207) ([Kirill Kopnev](https://github.com/Fgrtue)).
+
+### Settings and configuration {#settings-and-configuration}
+
+* Added the `table_readonly` MergeTree setting to mark tables as read-only, preventing inserts and modifications. [#97652](https://github.com/ClickHouse/ClickHouse/pull/97652) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Added the `use_partition_pruning` setting (alias `use_partition_key`). Set it to `false` to disable partition pruning based on the partition key. [#97888](https://github.com/ClickHouse/ClickHouse/pull/97888) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Each `type=http` entry in `<protocols>` can now specify a custom `<handlers>` key pointing to a separate `<http_handlers_*>` config section, enabling different HTTP routing rules per port. [#98414](https://github.com/ClickHouse/ClickHouse/pull/98414) ([Amos Bird](https://github.com/amosbird)).
+* Added two MergeTree settings — `replicated_fetches_min_part_level` and `replicated_fetches_min_part_level_timeout_seconds` — that allow replicas to skip fetching freshly-inserted (unmerged) parts from peers, reducing replication overhead during heavy ingestion. [#98625](https://github.com/ClickHouse/ClickHouse/pull/98625) ([tanner-bruce](https://github.com/tanner-bruce)).
+* Added the `restore_access_entities_with_current_grants` server setting. When enabled, restored users/roles have their grants limited to what the restoring user is allowed to grant (same semantics as `GRANT CURRENT GRANTS`), instead of failing with `ACCESS_DENIED`. [#98795](https://github.com/ClickHouse/ClickHouse/pull/98795) ([pufit](https://github.com/pufit)).
+* Added the `max_skip_unavailable_shards_num` and `max_skip_unavailable_shards_ratio` settings to limit how many shards can be silently skipped when `skip_unavailable_shards` is enabled. If the number or ratio of unavailable shards exceeds the configured threshold, an exception is thrown instead of returning silently incomplete results. [#99369](https://github.com/ClickHouse/ClickHouse/pull/99369) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Implemented quotas by normalized query hash to protect public ClickHouse services from abuse. `NORMALIZED_QUERY_HASH` is supported as a quota key type — a separate quota bucket per unique normalized query, so `CREATE QUOTA q KEYED BY normalized_query_hash` tracks each distinct query independently. `QUERIES_PER_NORMALIZED_HASH` is supported as a quota resource type — limiting the maximum executions of any single normalized query within an interval, so `MAX queries_per_normalized_hash = 100` prevents any one query pattern from running more than 100 times. [#99586](https://github.com/ClickHouse/ClickHouse/pull/99586) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* The `auto_statistics_types` MergeTree setting now defaults to `minmax, uniq`, so minmax and uniq statistics are created automatically for all suitable columns in new tables. `materialize_statistics_on_insert` now defaults to `false`, so statistics are built during merges rather than at insert time, reducing insert overhead. Set `materialize_statistics_on_insert = 1` to restore the old behavior. [#101275](https://github.com/ClickHouse/ClickHouse/pull/101275) ([Han Fei](https://github.com/hanfei1991)).
+* Added the `prefer_dependency_replica` refresh setting for materialized view dependency chains to reduce missing data from cross-replica replication lag. [#101591](https://github.com/ClickHouse/ClickHouse/pull/101591) ([Seva Potapov](https://github.com/seva-potapov)).
+
+### Authentication {#authentication}
+
+* Added the per-server LDAP config option `<follow_referrals>` (default `false`) to control whether the LDAP client follows referrals. Disabling referral chasing avoids timeouts and hangs when searching from an Active Directory domain-root base DN, and produces less log noise. [#96765](https://github.com/ClickHouse/ClickHouse/pull/96765) ([paf91](https://github.com/paf91)).
+
+### System tables {#system-tables}
+
+* Added `system.histogram_metric_log`, a new system table that periodically snapshots all histogram metrics (e.g. S3/Azure latencies, Keeper request processing stage durations). The `value` column of `system.histogram_metrics` is now `Float64` for greater flexibility and compatibility with the Prometheus data model. [#103046](https://github.com/ClickHouse/ClickHouse/pull/103046) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+
+## Experimental Features {#experimental-features}
+
+* Added the ALP floating-point compression codec (without ALP_rd fallback for non-compressible doubles). [#91362](https://github.com/ClickHouse/ClickHouse/pull/91362) ([Nazarii Piontko](https://github.com/nazarii-piontko)).
+* Added experimental lazy type hints for JSON columns. When enabled via `allow_experimental_json_lazy_type_hints`, `ALTER TABLE ... MODIFY COLUMN json JSON(path TypeName)` that only adds or modifies type hints completes instantly as a metadata-only operation, without rewriting historical data. Type hints are applied at query time for old parts and materialized during INSERTs and background merges. [#97412](https://github.com/ClickHouse/ClickHouse/pull/97412) ([tanner-bruce](https://github.com/tanner-bruce)).
+* Added support for external SQL dialects using the `polyglot` library. [#99496](https://github.com/ClickHouse/ClickHouse/pull/99496) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Added the `query_plan_optimize_join_order_randomize` setting, which randomizes statistics used for join reordering, useful for testing. [#100643](https://github.com/ClickHouse/ClickHouse/pull/100643) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Added AI function support to ClickHouse, allowing users to call OpenAI and Anthropic endpoints using SQL. `aiGenerate` is included as the first such function. [#100831](https://github.com/ClickHouse/ClickHouse/pull/100831) ([George Larionov](https://github.com/george-larionov)).
+* Added the AI functions `aiClassify`, `aiExtract`, and `aiTranslate` for utilizing LLM APIs in ClickHouse. [#100832](https://github.com/ClickHouse/ClickHouse/pull/100832) ([George Larionov](https://github.com/george-larionov)).
+* Added support for data lakes on top of Azure with Delta Kernel. [#102202](https://github.com/ClickHouse/ClickHouse/pull/102202) ([Smita Kulkarni](https://github.com/SmitaRKulkarni)).
+
+## Performance Improvements {#performance-improvements}
+
+### JOIN performance {#join-performance}
+
+* A small set of improvements in `HashJoin` and `ConcurrentHashJoin`. [#96663](https://github.com/ClickHouse/ClickHouse/pull/96663) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Added support for swapping the sides of `ANTI`, `SEMI`, and `FULL` joins based on optimizer statistics. [#97498](https://github.com/ClickHouse/ClickHouse/pull/97498) ([Hechem Selmi](https://github.com/m-selmi)).
+* Reduced cache contention in `RIGHT` and `FULL` joins by checking whether `JoinUsedFlags` is set before writing. [#99274](https://github.com/ClickHouse/ClickHouse/pull/99274) ([Hechem Selmi](https://github.com/m-selmi)).
+* Sped up hash joins on `Int32` and `Int64` keys with a small range by using a direct-index hash table. [#99275](https://github.com/ClickHouse/ClickHouse/pull/99275) ([Hechem Selmi](https://github.com/m-selmi)).
+
+### Query optimization {#query-optimization}
+
+* Optimized granule skipping for `pointInPolygon` for large polygons and fixed `pointInPolygon` index analysis throwing during primary key pruning. [#91633](https://github.com/ClickHouse/ClickHouse/pull/91633) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* `optimize_read_in_order` is now respected when reading projections. [#95885](https://github.com/ClickHouse/ClickHouse/pull/95885) ([Andrey Zvonov](https://github.com/zvonand)).
+* Slightly optimized reading from the text index dictionary, improving the overall performance of text index analysis. [#97519](https://github.com/ClickHouse/ClickHouse/pull/97519) ([Anton Popov](https://github.com/CurtizJ)).
+* Improved performance of text index analysis for queries with combined conditions involving both indexed and non-indexed columns. Previously, early-exit optimization during index analysis was incorrectly disabled in such cases. [#98096](https://github.com/ClickHouse/ClickHouse/pull/98096) ([Anton Popov](https://github.com/CurtizJ)).
+* Improved the performance of queries with constant expressions that generate very long arrays or maps. [#98287](https://github.com/ClickHouse/ClickHouse/pull/98287) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed key condition analysis for `DateTime64` primary keys compared with integer constants, which previously resulted in no granule pruning. [#98410](https://github.com/ClickHouse/ClickHouse/pull/98410) ([Amos Bird](https://github.com/amosbird)).
+* The setting `optimize_syntax_fuse_functions` is now enabled by default. [#98424](https://github.com/ClickHouse/ClickHouse/pull/98424) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Partition pruning is now allowed when the predicate contains any comparison operator (`=`, `<`, `>`, `!=`) and the partition key is wrapped in a deterministic function chain (e.g. with `PARTITION BY x`, predicates like `cityHash64(x) % 5 > 2`, `toYYYYMM(x) < 2026`, `toYYYYMM(x) = 2026`, or `toYYYYMM(x) != 2026` will all use the partition key for pruning). [#98432](https://github.com/ClickHouse/ClickHouse/pull/98432) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Read-in-order optimization and primary-key pruning are now allowed when the `CAST` target type is `Nullable` and the conversion is monotonic; for example, with `PRIMARY KEY x`, ClickHouse can use read-in-order optimization for `ORDER BY x::Nullable(UInt64)` and primary-key pruning for predicates such as `WHERE x::Nullable(UInt64) > 500000`. [#98482](https://github.com/ClickHouse/ClickHouse/pull/98482) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Index pruning and filter pushdown are now allowed when an integral column is compared with a float literal; for example, predicates like `WHERE x < 10.5` can now use the primary key for pruning, and filters such as `prime < 1e9` or `number < 1e5` are now pushed down for the `primes()` and `numbers()` table functions instead of causing unbounded execution. [#98516](https://github.com/ClickHouse/ClickHouse/pull/98516) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Queries filtering on MergeTree primary key columns with regex alternations over literal strings, such as `^(abc-1|abc-2)`, can now use primary key pruning when the alternatives share a common prefix. [#98988](https://github.com/ClickHouse/ClickHouse/pull/98988) ([Yash](https://github.com/Onyx2406)).
+* Optimized `INTERSECT ALL` and `EXCEPT ALL`. [#99097](https://github.com/ClickHouse/ClickHouse/pull/99097) ([Raufs Dunamalijevs](https://github.com/rienath)).
+* Added support for the `read_in_order_use_virtual_row` optimization for reverse-order reads. [#99198](https://github.com/ClickHouse/ClickHouse/pull/99198) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Faster discontinuous queries for `LowCardinality` columns with a single dictionary. [#99285](https://github.com/ClickHouse/ClickHouse/pull/99285) ([Ivan Babrou](https://github.com/bobrik)).
+* Fixed negative scaling for short queries with aggregation on machines with many cores. When a query reads few marks, the pipeline no longer expands to `max_threads` after aggregation, avoiding overhead from mostly-empty streams. [#99493](https://github.com/ClickHouse/ClickHouse/pull/99493) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Improved the performance of queries with parallel replicas by correctly selecting the reading task size. [#99801](https://github.com/ClickHouse/ClickHouse/pull/99801) ([Nikita Taranov](https://github.com/nickitat)).
+* Removed redundant trailing `ORDER BY` elements once all `GROUP BY` keys are covered in the `ORDER BY` prefix. [#100157](https://github.com/ClickHouse/ClickHouse/pull/100157) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Optimized queries by pushing the `LIMIT` clause down into `UNION ALL`. [#100364](https://github.com/ClickHouse/ClickHouse/pull/100364) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Added JIT compilation support for `String` and `FixedString` column comparisons in `ORDER BY`, improving merge-phase sort performance by 6–17% for string-heavy sort keys. [#100577](https://github.com/ClickHouse/ClickHouse/pull/100577) ([Raúl Marín](https://github.com/Algunenano)).
+* When `read_in_order_use_virtual_row` is enabled together with the new `read_in_order_use_virtual_row_per_block` setting, virtual row boundary information is now emitted after each block read from MergeTree, allowing the merge to reprioritize sources mid-stream for parts whose data is fully filtered out by `WHERE`/`PREWHERE`/`JOIN`. [#100603](https://github.com/ClickHouse/ClickHouse/pull/100603) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Better parallelization of queries with simple views (over an underlying MergeTree table) executed with parallel replicas. [#100815](https://github.com/ClickHouse/ClickHouse/pull/100815) ([Igor Nikonov](https://github.com/devcrafter)).
+* Added support for parallel replicas over simple views (including eligible `UNION ALL` views over `MergeTree` tables) when `parallel_replicas_allow_view_over_mergetree=1`. This parallelizes the view's outer query instead of the inner one, increasing query parallelization across nodes. [#100958](https://github.com/ClickHouse/ClickHouse/pull/100958) ([Igor Nikonov](https://github.com/devcrafter)).
+* Optimized reading in order of the primary key for `full_sorting_merge` when filters with `IN` are present in the query plan. [#101261](https://github.com/ClickHouse/ClickHouse/pull/101261) ([Nikita Taranov](https://github.com/nickitat)).
+* Improved performance of `INSERT VALUES` for `Map`, `Array`, and `Tuple` columns when values are passed as escaped strings (e.g. `'{\'key\':1}'`), avoiding unnecessary fallback to the SQL expression parser. [#102119](https://github.com/ClickHouse/ClickHouse/pull/102119) ([Joanna Hulboj](https://github.com/jh0x)).
+
+### Function and aggregation performance {#function-and-aggregation-performance}
+
+* Improved performance of the `levenshteinDistance` function. [#94543](https://github.com/ClickHouse/ClickHouse/pull/94543) ([Joanna Hulboj](https://github.com/jh0x)).
+* Optimized batch decimal type conversions by avoiding per-element function calls. [#95923](https://github.com/ClickHouse/ClickHouse/pull/95923) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Improved performance of `LIKE` queries. [#98149](https://github.com/ClickHouse/ClickHouse/pull/98149) ([Elmi Ahmadov](https://github.com/ahmadov)).
+* Optimized the `avgWeighted` aggregate function by using local accumulators instead of per-row store-forwarding through aggregate state, improving performance by up to 27% for `Nullable` inputs. [#98793](https://github.com/ClickHouse/ClickHouse/pull/98793) ([Antonio Andelic](https://github.com/antonio2368)).
+* Sped up `var*Stable` and `stddev*Stable` functions for `Float64` columns by devirtualizing the inner loop. This enables compiler optimizations (FMA/registers) that alter floating-point results at the ULP level. [#99460](https://github.com/ClickHouse/ClickHouse/pull/99460) ([Riyane El Qoqui](https://github.com/riyaneel)).
+* Use the optimized Firedancer base58 encode for inputs of 32/64 bytes (automatic for `base58Encode`), and allow using the optimized base58 decode if the decoded result is 32/64 bytes (explicit with `base58Decode('...', 32)`). [#99461](https://github.com/ClickHouse/ClickHouse/pull/99461) ([Joanna Hulboj](https://github.com/jh0x)).
+* Optimized the `cutURLParameter` function by eliminating unnecessary memory shifts. [#100218](https://github.com/ClickHouse/ClickHouse/pull/100218) ([Nikita Semenov](https://github.com/leftmain)).
+* Faster float-to-string conversion for large integer values by extending the `itoa` fast path with dragonbox-compatible rounding. [#100649](https://github.com/ClickHouse/ClickHouse/pull/100649) ([Raúl Marín](https://github.com/Algunenano)).
+* Replaced dragonbox with zmij for 1.5x–3x faster float-to-string conversion. [#100650](https://github.com/ClickHouse/ClickHouse/pull/100650) ([Raúl Marín](https://github.com/Algunenano)).
+* Faster `Int128`/`UInt128` to string conversion by replacing software division with Barrett reduction and unrolling the conversion loop. [#100671](https://github.com/ClickHouse/ClickHouse/pull/100671) ([Raúl Marín](https://github.com/Algunenano)).
+* Avoided spawning redundant threads in `UniqExactSet` parallel merge. [#100686](https://github.com/ClickHouse/ClickHouse/pull/100686) ([Jiebin Sun](https://github.com/jiebinn)).
+* Added batch parallel merge for `UniqExactSet`. [#100687](https://github.com/ClickHouse/ClickHouse/pull/100687) ([Jiebin Sun](https://github.com/jiebinn)).
+
+### Storage and I/O performance {#storage-and-io-performance}
+
+* Reduced lock contention during read-only operations on ReplicatedMergeTree tables with finished mutations. [#95771](https://github.com/ClickHouse/ClickHouse/pull/95771) ([Eduard Karacharov](https://github.com/korowa)).
+* Iceberg can now asynchronously pre-populate metadata into the cache, enabled by setting `iceberg_metadata_async_prefetch_period_ms` at table creation. `SELECT` queries from Iceberg tables can now specify the `iceberg_metadata_staleness_ms` parameter, which allows ClickHouse to rely on the cached version of the metadata if it is fresher than the specified staleness; otherwise the remote Iceberg catalog is queried for the latest metadata. This can eliminate calls to the Iceberg catalog during request processing, bringing a visible performance gain. [#96191](https://github.com/ClickHouse/ClickHouse/pull/96191) ([Arsen Muk](https://github.com/arsenmuk)).
+* S3Queue ordered mode now uses S3 `ListObjectsV2` `StartAfter` to avoid re-listing the full prefix history, reducing `ListObjects` calls. [#96370](https://github.com/ClickHouse/ClickHouse/pull/96370) ([Venkata Vineel](https://github.com/vyalamar)).
+* Enabled parallel reads from the YTsaurus table engine. [#97343](https://github.com/ClickHouse/ClickHouse/pull/97343) ([MikhailBurdukov](https://github.com/MikhailBurdukov)).
+* Improved the performance of data lakes. In previous versions, reading from object storage did not resize the pipeline to the number of processing threads. [#99548](https://github.com/ClickHouse/ClickHouse/pull/99548) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Allowed prefetching when reading a remote file through the userspace page cache. [#99919](https://github.com/ClickHouse/ClickHouse/pull/99919) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a significant INSERT performance regression when `deduplicate_insert=enable` (default since 26.2) by deferring data hash computation from squashing to the sink and using batch column hashing via `updateHashWithValueRange`, reducing overhead from ~2.5s to ~0.5s for 5M rows with 22 columns. [#101494](https://github.com/ClickHouse/ClickHouse/pull/101494) ([Sema Checherinda](https://github.com/CheSema)).
+
+### Memory optimization {#memory-optimization}
+
+* For sync inserts, the original block (needed for deduplication) can now be omitted to save memory. [#96661](https://github.com/ClickHouse/ClickHouse/pull/96661) ([Sema Checherinda](https://github.com/CheSema)).
+* Improved performance and reduced memory usage for parallel window functions in certain scenarios, and for `arrayFold` workloads with large arrays. This can also reduce page-fault pressure and improve stability under tight memory limits for affected queries. [#98892](https://github.com/ClickHouse/ClickHouse/pull/98892) ([filimonov](https://github.com/filimonov)).
+
+## Improvements {#improvements}
+
+### Query and SQL {#query-and-sql-improvements}
+
+* Aggregate projections are now correctly supported in views. [#88798](https://github.com/ClickHouse/ClickHouse/pull/88798) ([Amos Bird](https://github.com/amosbird)).
+* `optimize_aggregators_of_group_by_keys` now correctly optimizes aggregate functions in `GROUPING SETS` queries. [#93935](https://github.com/ClickHouse/ClickHouse/pull/93935) ([Xiaozhe Yu](https://github.com/wudidapaopao)).
+* Added support for converting `OUTER` to `INNER` join optimization with `join_use_nulls`. [#95968](https://github.com/ClickHouse/ClickHouse/pull/95968) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Extended `cast_keep_nullable` to work with `Dynamic`/`JSON` types. When set, casting `NULL` from types that can be `Nullable` returns `NULL`; otherwise `NULL` throws a `CANNOT_INSERT_NULL_IN_ORDINARY_COLUMN` error. [#96504](https://github.com/ClickHouse/ClickHouse/pull/96504) ([Seva Potapov](https://github.com/seva-potapov)).
+* Added the `ROLE` clause to `CREATE USER`. [#97074](https://github.com/ClickHouse/ClickHouse/pull/97074) ([Vitaly Baranov](https://github.com/vitlibar)).
+* Added information about deferred filters as a separate item in `EXPLAIN` query output (when using row policies/PREWHERE with FINAL). [#97374](https://github.com/ClickHouse/ClickHouse/pull/97374) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Added support for parenthesized table join expressions in the `FROM` clause, e.g. `SELECT * FROM (t1 CROSS JOIN t2)`. [#97650](https://github.com/ClickHouse/ClickHouse/pull/97650) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Apply data skipping indexes during distributed index analysis. [#97767](https://github.com/ClickHouse/ClickHouse/pull/97767) ([Azat Khuzhin](https://github.com/azat)).
+* The sorting key of a table can now be an expression like `toDate(time)`, and decisions about not deferring such expressions are made when they are part of filters. [#98237](https://github.com/ClickHouse/ClickHouse/pull/98237) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* The join order optimizer now infers transitive equi-join predicates from existing join conditions. For example, given `A.x = B.x AND B.x = C.x`, the equivalence `A.x = C.x` is recognized, allowing the optimizer to consider direct joins between transitively-connected tables. This can improve plan quality for star and snowflake schemas. The feature is controlled by the new `enable_join_transitive_predicates` setting (off by default). [#98479](https://github.com/ClickHouse/ClickHouse/pull/98479) ([Alexander Gololobov](https://github.com/davenger)).
+* When `apply_row_policy_after_final` or `apply_prewhere_after_final` is enabled, compound `AND` conditions in row policies and `PREWHERE` are now decomposed to extract sorting-key atoms for primary key index analysis. Previously, if a deferred filter contained a mix of sorting-key and non-sorting-key predicates (e.g. `x > 1 AND y != 'foo'`), the entire expression was excluded from index analysis. [#98513](https://github.com/ClickHouse/ClickHouse/pull/98513) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Only "alive" (connectable) replicas now participate in distributed index analysis. [#98521](https://github.com/ClickHouse/ClickHouse/pull/98521) ([Azat Khuzhin](https://github.com/azat)).
+* Capped the number of nodes used in the automatic parallel replicas heuristic to the actual number of nodes in the cluster (instead of only the `max_parallel_replicas` setting). [#98668](https://github.com/ClickHouse/ClickHouse/pull/98668) ([Nikita Taranov](https://github.com/nickitat)).
+* Implemented hedged requests and asynchronous reading for distributed index analysis. [#98724](https://github.com/ClickHouse/ClickHouse/pull/98724) ([Azat Khuzhin](https://github.com/azat)).
+* Added support for the `SAMPLE` clause in distributed index analysis. [#98931](https://github.com/ClickHouse/ClickHouse/pull/98931) ([Azat Khuzhin](https://github.com/azat)).
+* Added monotonicity support for multiply, enabling primary key pruning for `key * constant` expressions. [#98983](https://github.com/ClickHouse/ClickHouse/pull/98983) ([Amos Bird](https://github.com/amosbird)).
+* Analyzer error messages no longer dump all columns of a table (which could produce 150KB+ exceptions). Column lists are now capped at 10 entries. [#99002](https://github.com/ClickHouse/ClickHouse/pull/99002) ([Yash](https://github.com/Onyx2406)).
+* Column statistics from sub-queries with joins are now properly returned so the parent query can use them for join reordering. [#99096](https://github.com/ClickHouse/ClickHouse/pull/99096) ([Alexander Gololobov](https://github.com/davenger)).
+* `ALTER TABLE MODIFY COLUMN x TTL ...` is now allowed without specifying the column type. [#99208](https://github.com/ClickHouse/ClickHouse/pull/99208) ([Nikolay Degterinsky](https://github.com/evillique)).
+* Improved `EXPLAIN PLAN pretty=1` output: print top-level query output columns, show join relation labels/symbols with estimated result rows and locality, and include per-step output columns for join/source steps. [#99462](https://github.com/ClickHouse/ClickHouse/pull/99462) ([Kirill Kopnev](https://github.com/Fgrtue)).
+* Fixed `merge()` table function failing with an `UNKNOWN_IDENTIFIER` error when querying columns not present in all underlying distributed/remote tables. [#99833](https://github.com/ClickHouse/ClickHouse/pull/99833) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* `ConditionSelectivityEstimator` is no longer used in the optimizer when the condition is not in CNF (for example `where a = 0`, which is a single condition where statistics cannot help). [#100110](https://github.com/ClickHouse/ClickHouse/pull/100110) ([Han Fei](https://github.com/hanfei1991)).
+* Applied `distributed_index_analysis_min_indexes_bytes_to_activate` after partition pruning. [#100477](https://github.com/ClickHouse/ClickHouse/pull/100477) ([Azat Khuzhin](https://github.com/azat)).
+* `EXPLAIN PIPELINE` now supports the `distributed=1` setting to include remote pipeline fragments. [#100513](https://github.com/ClickHouse/ClickHouse/pull/100513) ([Nikita Taranov](https://github.com/nickitat)).
+* `use_partition_pruning = 0` now also disables `MinMax` index pruning and count optimization on partition key columns, in addition to disabling pruning based on partition keys. [#100904](https://github.com/ClickHouse/ClickHouse/pull/100904) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* `EXPLAIN [PLAN] pretty=1` now prints expressions in a human-readable format. [#100927](https://github.com/ClickHouse/ClickHouse/pull/100927) ([Kirill Kopnev](https://github.com/Fgrtue)).
+* `accurateCastOrNull` and `accurateCastOrDefault` now support `Tuple` target types, including nested `Tuples` with `Nullable` elements. Previously these functions rejected `Tuple` targets because `Tuple` could not be inside `Nullable`. [#100942](https://github.com/ClickHouse/ClickHouse/pull/100942) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* You can now use a trailing comma in the `WITH` clause before a `SELECT` query. [#101093](https://github.com/ClickHouse/ClickHouse/pull/101093) ([Aruj Bansal](https://github.com/arujbansal)).
+* Implemented lazy column materialization for ReplacingMergeTree with FINAL when the predicate is selective enough. [#101647](https://github.com/ClickHouse/ClickHouse/pull/101647) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
+* Improved default selectivity estimates for conditions without statistics to match industry-standard heuristics: 0.1 for `LIKE` condition selectivity, 0.33 for unknown condition selectivity. [#101653](https://github.com/ClickHouse/ClickHouse/pull/101653) ([Alexander Gololobov](https://github.com/davenger)).
+* Inline the VIEW subquery in the query tree to allow more optimizations to be applied to the VIEW. [#100830](https://github.com/ClickHouse/ClickHouse/pull/100830) ([Dmitry Novik](https://github.com/novikd)).
+
+### Functions {#functions-improvements}
+
+* You can now use native JSON/Object input for `JSONExtract` functions. [#96711](https://github.com/ClickHouse/ClickHouse/pull/96711) ([Fisnik Kastrati](https://github.com/fkastrati)).
+* Introduced the `tokensForLikePattern` SQL function, which tokenizes `LIKE` patterns while respecting wildcard semantics: `%` and `_` are treated as wildcards, escaped wildcards (`\%`, `\_`) are treated as literals, and tokens adjacent to unescaped wildcards are discarded. [#97872](https://github.com/ClickHouse/ClickHouse/pull/97872) ([Amos Bird](https://github.com/amosbird)).
+* Implemented the `toDaysInMonth()` function, which returns the number of days in the month of the specified date. [#99227](https://github.com/ClickHouse/ClickHouse/pull/99227) ([Vitaly Baranov](https://github.com/vitlibar)).
+* Renamed the `unicodeWord` tokenizer to `asciiCJK`. [#100956](https://github.com/ClickHouse/ClickHouse/pull/100956) ([George Larionov](https://github.com/george-larionov)).
+* Added parser-level syntactic sugar for the SQL standard `OVERLAY` function syntax. The `overlay` function already exists; this adds support for the keyword-based form using `PLACING`, `FROM`, and `FOR` as separators. [#101681](https://github.com/ClickHouse/ClickHouse/pull/101681) ([Desel72](https://github.com/Desel72)).
+* The `ngrams` function now rejects invalid ngram lengths. For example, `SELECT ngrams('abc', 0)` now returns an error. [#101922](https://github.com/ClickHouse/ClickHouse/pull/101922) ([Robert Schulze](https://github.com/rschu1ze)).
+* Added support for the `array` tokenizer in the `LIKE` optimization. [#102880](https://github.com/ClickHouse/ClickHouse/pull/102880) ([Elmi Ahmadov](https://github.com/ahmadov)).
+
+### Table engines and storage {#table-engines-and-storage-improvements}
+
+* Added a dedicated cleanup thread for MergeTree to prevent cleanup delays under heavy merge load. [#91574](https://github.com/ClickHouse/ClickHouse/pull/91574) ([Amos Bird](https://github.com/amosbird)).
+* Tables with `DELETE TTL` rules can now use the vertical merge algorithm. [#97332](https://github.com/ClickHouse/ClickHouse/pull/97332) ([murphy-4o](https://github.com/murphy-4o)).
+* Marks of secondary indexes are now prewarmed when the `prewarm_mark_cache` setting is enabled (loaded into the index mark cache during data part fetches and table startup). [#97772](https://github.com/ClickHouse/ClickHouse/pull/97772) ([Anton Popov](https://github.com/CurtizJ)).
+* Text indexes can now be built on `Nullable([Fixed]String)` and `Array(Nullable([Fixed]String))` columns. [#98118](https://github.com/ClickHouse/ClickHouse/pull/98118) ([Jimmy Aguilar Mena](https://github.com/Ergus)).
+* Cancel background merges early in `DROP DATABASE` for ordinary shared merge tree. [#98161](https://github.com/ClickHouse/ClickHouse/pull/98161) ([Shaohua Wang](https://github.com/tiandiwonder)).
+* Added the `finalize_projection_parts_synchronously` setting to allow synchronous finalization of projection parts during INSERT, reducing peak memory usage for tables with many projections while preserving the existing async behavior by default. [#98228](https://github.com/ClickHouse/ClickHouse/pull/98228) ([Amos Bird](https://github.com/amosbird)).
+* Added the `share_nested_offsets` MergeTree setting (default `true`). When set to `false`, Array columns with dotted names (e.g. `n.a`, `n.b`) are treated as independent columns instead of sharing offset files and validating equal array sizes as part of legacy Nested semantics. [#98416](https://github.com/ClickHouse/ClickHouse/pull/98416) ([Amos Bird](https://github.com/amosbird)).
+* Optimized `TRUNCATE DATABASE TABLES LIKE` by pre-cancelling merges in parallel. [#98597](https://github.com/ClickHouse/ClickHouse/pull/98597) ([Shaohua Wang](https://github.com/tiandiwonder)).
+* Reduced lock contention in `MergeTreeBackgroundExecutor` by releasing task resources without acquiring the lock. [#98604](https://github.com/ClickHouse/ClickHouse/pull/98604) ([Dmitry Novik](https://github.com/novikd)).
+* `TRUNCATE DATABASE` now responds to query cancellation. [#98828](https://github.com/ClickHouse/ClickHouse/pull/98828) ([Shaohua Wang](https://github.com/tiandiwonder)).
+* Restart the statistics cache after changing a merge tree setting. [#98520](https://github.com/ClickHouse/ClickHouse/pull/98520) ([Han Fei](https://github.com/hanfei1991)).
+* Added the `compress_per_column_in_compact_parts` MergeTree setting to control how compressed blocks are organized within Compact parts. When `true` (default, preserving current behavior), each column starts a new compressed block, allowing selective decompression. When `false`, all columns within a granule are packed into the same compressed block, improving compression ratio and read performance for workloads that always read all columns. [#101114](https://github.com/ClickHouse/ClickHouse/pull/101114) ([Amos Bird](https://github.com/amosbird)).
+* The text index is now GA and stays enabled regardless of the `compatibility` setting, preventing unexpected disabling during backup restores or when running in compatibility mode. [#101518](https://github.com/ClickHouse/ClickHouse/pull/101518) ([Nikita Fomichev](https://github.com/fm4v)).
+* Added support for the text index built on `mapValues(map)` with the `IN` operator. [#99286](https://github.com/ClickHouse/ClickHouse/pull/99286) ([Anton Popov](https://github.com/CurtizJ)).
+* Improved analysis of multiple text indexes used simultaneously in the same query. The `use_skip_indexes_on_data_read` setting is no longer required for the direct read optimization of text indexes. [#102255](https://github.com/ClickHouse/ClickHouse/pull/102255) ([Anton Popov](https://github.com/CurtizJ)).
+* Added text index analysis support for the `hasPhrase` function via the `HINT` mode. [#102438](https://github.com/ClickHouse/ClickHouse/pull/102438) ([Elmi Ahmadov](https://github.com/ahmadov)).
+* MinMax column statistics now store the minimum and maximum values as `Field` (typed) instead of `Float64`. The serialized format includes the column type name alongside the values. The statistics file version is bumped to V2; files written by older versions require re-materialization (`ALTER TABLE ... MATERIALIZE STATISTICS ALL`). [#100605](https://github.com/ClickHouse/ClickHouse/pull/100605) ([Han Fei](https://github.com/hanfei1991)).
+
+### Data lakes {#data-lakes-improvements}
+
+* Added a new query to check the health of `DataLakeCatalog`. [#94690](https://github.com/ClickHouse/ClickHouse/pull/94690) ([Smita Kulkarni](https://github.com/SmitaRKulkarni)).
+* Improved Iceberg writes for the Unity catalog. [#98162](https://github.com/ClickHouse/ClickHouse/pull/98162) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+* Rebuilt entities in `IcebergManifestFile` to make code maintenance less error-prone (also fixes some manifest file caching issues). [#98231](https://github.com/ClickHouse/ClickHouse/pull/98231) ([Daniil Ivanik](https://github.com/divanik)).
+* Enhanced Iceberg `ALTER TABLE ... EXECUTE expire_snapshots(...)` with richer argument support. [#99130](https://github.com/ClickHouse/ClickHouse/pull/99130) ([murphy-4o](https://github.com/murphy-4o)).
+* Changed the interface for Iceberg inserts with the catalog. Deprecated the `storage_catalog_type`, `storage_aws_access_key_id`, and similar settings. [#100334](https://github.com/ClickHouse/ClickHouse/pull/100334) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+* Fixed inconsistent path handling in Iceberg caused by mixed usage of storage paths and metadata paths; enforced that Iceberg tables write a table location that is either a URL or an absolute path; added a fallback for counting file sizes in Azure; handled `version-hint.txt` in a manner compatible with Spark; introduced type-level abstractions to make path types harder to confuse; and fixed usage of position deletes. [#100420](https://github.com/ClickHouse/ClickHouse/pull/100420) ([Daniil Ivanik](https://github.com/divanik)).
+* Avoid scanning the whole remote data lake catalog for "Maybe you meant ..." table hints when `show_data_lake_catalogs_in_system_tables` is disabled. [#100452](https://github.com/ClickHouse/ClickHouse/pull/100452) ([Alsu Giliazova](https://github.com/alsugiliazova)).
+* Object information used for parsing Iceberg data files now contains the number of file rows and the file size in bytes parsed from the manifest file. [#100645](https://github.com/ClickHouse/ClickHouse/pull/100645) ([Daniil Ivanik](https://github.com/divanik)).
+* Added a Delta Lake pruner with virtual columns. [#101634](https://github.com/ClickHouse/ClickHouse/pull/101634) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+
+### S3 and object storage {#s3-and-object-storage-improvements}
+
+* Added a `{_schema_hash}` placeholder for the S3 table engine that inserts a hash of the table's column definitions into the S3 path. [#98265](https://github.com/ClickHouse/ClickHouse/pull/98265) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+* Added a new option to force virtual/path style for S3 endpoints. [#102378](https://github.com/ClickHouse/ClickHouse/pull/102378) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+
+### Settings and configuration {#settings-and-configuration-improvements}
+
+* Users can now specify multiple authentication methods in `users_xml` configuration. [#91998](https://github.com/ClickHouse/ClickHouse/pull/91998) ([Flip-Liquid](https://github.com/Flip-Liquid)).
+* You can now set `internal_replication` settings for a cluster created by the Replicated database. [#97228](https://github.com/ClickHouse/ClickHouse/pull/97228) ([Pervakov Grigorii](https://github.com/GrigoryPervakov)).
+* Added the `allow_nullable_tuple_in_extracted_subcolumns` setting, which controls whether extracted `Tuple(...)` subcolumns from `Tuple`, `Variant`, `Dynamic`, and `JSON` are returned as `Nullable(Tuple(...))` (`NULL` for missing rows) or as `Tuple(...)` (default tuple values for missing rows). Disabled by default; can only be changed by restarting the server. [#97299](https://github.com/ClickHouse/ClickHouse/pull/97299) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* `type_json_allow_duplicated_key_with_literal_and_nested_object` is now enabled by default, avoiding errors about duplicated keys when parsing JSON like `{"a" : 42, "a" : {"b" : 42}}` that ClickHouse may produce from original data `{"a" : 42, "a.b" : 42}`. [#97423](https://github.com/ClickHouse/ClickHouse/pull/97423) ([Pavel Kruglov](https://github.com/Avogar)).
+* Column statistics are now GA. The setting `allow_experimental_statistics` (default `false`) is obsoleted in favor of `allow_statistics` (default `true`); `allow_statistics_optimize` is promoted from beta to GA; ClickHouse creates `minmax` and `uniq` statistics for new columns (MergeTree setting `auto_statistics_types`); and to avoid slower INSERTs, `materialize_statistics_on_insert` is now disabled by default. [#97487](https://github.com/ClickHouse/ClickHouse/pull/97487) ([Han Fei](https://github.com/hanfei1991)).
+* Clarified the relationship between `enable_parallel_replicas` and `automatic_parallel_replicas_mode`: a query can use parallel replicas only if `enable_parallel_replicas > 0`. With `automatic_parallel_replicas_mode=1`, the decision is made during planning based on collected statistics; with `automatic_parallel_replicas_mode=0`, parallel replicas are used for all supported queries regardless of statistics. Distributed insert-select with parallel replicas always behaves as if `automatic_parallel_replicas_mode=0`. [#97517](https://github.com/ClickHouse/ClickHouse/pull/97517) ([Nikita Taranov](https://github.com/nickitat)).
+* Enabled the impersonate feature ([EXECUTE AS target_user](https://clickhouse.com/docs/sql-reference/statements/execute_as)) by default. [#97870](https://github.com/ClickHouse/ClickHouse/pull/97870) ([Vitaly Baranov](https://github.com/vitlibar)).
+* Added the `access_control_improvements.disallow_config_defined_profiles_for_sql_defined_users` setting (allowed by default) that disallows using config-defined settings profiles (except for the `default` profile) for SQL-defined users. [#98662](https://github.com/ClickHouse/ClickHouse/pull/98662) ([Alexander Tokmakov](https://github.com/tavplubix)).
+* Added a setting to control type mismatch behavior for `Variant` and `Dynamic` (throw or return null). [#99085](https://github.com/ClickHouse/ClickHouse/pull/99085) ([Bharat Nallan](https://github.com/bharatnc)).
+* Changed the default `stderr_reaction` from `throw` to `log_last` for executable UDFs. UDFs that write warnings to stderr no longer fail when the exit code is 0, and exit code exceptions now include stderr content. [#99232](https://github.com/ClickHouse/ClickHouse/pull/99232) ([Xu Jia](https://github.com/XuJia0210)).
+* Added the `input_format_column_name_matching_mode` setting, which allows different case sensitivities for input formats. [#99346](https://github.com/ClickHouse/ClickHouse/pull/99346) ([manerone](https://github.com/Manerone)).
+* Auto statistics are no longer enabled for system tables, as they rarely benefit from them. [#102862](https://github.com/ClickHouse/ClickHouse/pull/102862) ([Han Fei](https://github.com/hanfei1991)).
+
+### System tables and monitoring {#system-tables-and-monitoring-improvements}
+
+* Data skipping indices used during query execution are now tracked in `system.query_log` in a new `skip_indices` column. [#99793](https://github.com/ClickHouse/ClickHouse/pull/99793) ([Grant Holly](https://github.com/grantholly-clickhouse)).
+* Added the `projections_duration_ms` column to `system.part_log`, which records per-projection merge/rebuild duration in milliseconds. [#98292](https://github.com/ClickHouse/ClickHouse/pull/98292) ([Amos Bird](https://github.com/amosbird)).
+* Added the column alias `INDEX_LENGTH` to `information_schema.tables`. [#101705](https://github.com/ClickHouse/ClickHouse/pull/101705) ([Robert Schulze](https://github.com/rschu1ze)).
+* `information_schema.tables` now ignores inactive table parts, making the shown table size values more realistic. [#101706](https://github.com/ClickHouse/ClickHouse/pull/101706) ([Robert Schulze](https://github.com/rschu1ze)).
+
+### ClickHouse Keeper {#clickhouse-keeper-improvements}
+
+* `find_super_nodes` no longer gets stuck traversing the children of the first super node, making it possible to find more than one. [#97819](https://github.com/ClickHouse/ClickHouse/pull/97819) ([pufit](https://github.com/pufit)).
+* Mark a ZooKeeper session as expired immediately when finalization starts, instead of waiting for the send thread to exit. This allows other threads to establish a new session without delay. [#99102](https://github.com/ClickHouse/ClickHouse/pull/99102) ([Raúl Marín](https://github.com/Algunenano)).
+* Skip stale Keeper requests for sessions that have already disconnected, avoiding unnecessary Raft round-trips. The number of tracked finished sessions is capped by the `max_finished_sessions_cache_size` coordination setting. [#99246](https://github.com/ClickHouse/ClickHouse/pull/99246) ([Antonio Andelic](https://github.com/antonio2368)).
+* Prevent the Keeper `mntr` command from getting stuck due to lock contention. [#99472](https://github.com/ClickHouse/ClickHouse/pull/99472) ([Antonio Andelic](https://github.com/antonio2368)).
+* Reduced lock contention in the Keeper dispatcher by invoking callbacks and dispatching read requests outside the mutex scope, and added profiled lock guards for observability. [#99751](https://github.com/ClickHouse/ClickHouse/pull/99751) ([Antonio Andelic](https://github.com/antonio2368)).
+
+### Memory management {#memory-management-improvements}
+
+* Added the `use_separate_cache_arena` configuration parameter to control separation of the cache arena. [#100664](https://github.com/ClickHouse/ClickHouse/pull/100664) ([Seva Potapov](https://github.com/seva-potapov)).
+
+### Data formats {#data-formats-improvements}
+
+* Added the `output_format_trim_fixed_string` setting to strip trailing null bytes from `FixedString` values in text output formats. [#97558](https://github.com/ClickHouse/ClickHouse/pull/97558) ([NeedmeFordev](https://github.com/spider-yamet)).
+* Made it possible to parse GeoParquet files that contain different Geo types in the same column. [#97851](https://github.com/ClickHouse/ClickHouse/pull/97851) ([Mark Needham](https://github.com/mneedham)).
+* Deserialization of binary `AggregateFunction` states now requires consuming the full input. If extra redundant trailing bytes are present, ClickHouse throws an exception instead of accepting malformed state data. [#98786](https://github.com/ClickHouse/ClickHouse/pull/98786) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Users can now write ClickHouse interval data types to the Arrow format. [#99519](https://github.com/ClickHouse/ClickHouse/pull/99519) ([Peter Nguyen](https://github.com/petern48)).
+* Added native support for importing and exporting UUID data types in Arrow and Parquet formats, with automatic logical inference for top-level UUIDs and support for explicit schema hints for nested UUIDs. [#99521](https://github.com/ClickHouse/ClickHouse/pull/99521) ([Ivan](https://github.com/ivanmantova)).
+* Tolerate missing padding at the end of the last block of Parquet files. [#99857](https://github.com/ClickHouse/ClickHouse/pull/99857) ([Seva Potapov](https://github.com/seva-potapov)).
+* Exporting UUIDs to Parquet via the Arrow encoder now includes the correct UUID type annotation, eliminating the need to manually cast `FixedString(16)` data when reading the files back. [#100150](https://github.com/ClickHouse/ClickHouse/pull/100150) ([Ivan](https://github.com/ivanmantova)).
+* Added native support for importing Apache Arrow `StringView` and `BinaryView` data types into ClickHouse `String` columns, improving compatibility for Arrow-based ingestion. [#100762](https://github.com/ClickHouse/ClickHouse/pull/100762) ([Ivan](https://github.com/ivanmantova)).
+* Added support for `Nullable(Tuple)` in the `Arrow`, `ArrowStream`, `ORC`, and legacy `Parquet` formats. [#101272](https://github.com/ClickHouse/ClickHouse/pull/101272) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+
+### Named collections and dictionaries {#named-collections-and-dictionaries}
+
+* Added `sslmode` to the allowed keys for PostgreSQL dictionary sources, making it possible to configure SSL mode for PostgreSQL dictionary connections (e.g. for AWS RDS, which enforces SSL by default). [#98014](https://github.com/ClickHouse/ClickHouse/pull/98014) ([mcalfin](https://github.com/mcalfin)).
+* Avoid dropping named collections that are dependencies of dictionary sources. [#98127](https://github.com/ClickHouse/ClickHouse/pull/98127) ([Pablo Marcos](https://github.com/pamarcos)).
+* Added support for `Map` and `JSON`/`Object` types as dictionary attributes. Dictionaries can now store and retrieve complex types including `Map(String, String)`, `Map(String, Array(String))`, `JSON`, and `Nullable(JSON)` in both FLAT and HASHED layouts. [#98627](https://github.com/ClickHouse/ClickHouse/pull/98627) ([yanglongwei](https://github.com/ylw510)).
+* `SYSTEM RELOAD DICTIONARIES` now reloads dictionaries in topological order so that dictionaries sourcing from other dictionaries see fresh data after reload. [#98356](https://github.com/ClickHouse/ClickHouse/pull/98356) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Cache dictionaries no longer take an exclusive lock in `hasKeys`, reducing lock contention by using a shared lock for cache reads. [#100796](https://github.com/ClickHouse/ClickHouse/pull/100796) ([liuguangliang](https://github.com/sourcelliu)).
+
+### Other improvements {#other-improvements}
+
+* `ACCESS_DENIED` hints no longer reveal column names unless the user can show all required columns; database/table names remain visible in the hint. [#91067](https://github.com/ClickHouse/ClickHouse/pull/91067) ([filimonov](https://github.com/filimonov)).
+* Reload the cluster config if the IPs of the local server's hostname change, instead of the IPs of any host. [#93726](https://github.com/ClickHouse/ClickHouse/pull/93726) ([Zhigao Hong](https://github.com/zghong)).
+* Flush async logging buffers in case of a crash. [#97836](https://github.com/ClickHouse/ClickHouse/pull/97836) ([Azat Khuzhin](https://github.com/azat)).
+* Reduced locking during access control. [#97894](https://github.com/ClickHouse/ClickHouse/pull/97894) ([Nikita Taranov](https://github.com/nickitat)).
+* Updated ClickStack to version 2.20.0. [#98252](https://github.com/ClickHouse/ClickHouse/pull/98252) ([Aaron Knudtson](https://github.com/knudtty)).
+* Disable AI SQL generation (`??` command) in the embedded client (SSH and WebSocket protocols) to prevent access to the server's environment variables. [#100290](https://github.com/ClickHouse/ClickHouse/pull/100290) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* NACK broken messages when using RabbitMQ storage. [#102157](https://github.com/ClickHouse/ClickHouse/pull/102157) ([Seva Potapov](https://github.com/seva-potapov)).
+
+## Bug Fixes {#bug-fixes}
+
+<details>
+<summary>All bug fixes (click to expand)</summary>
+
+### JOIN fixes {#join-fixes}
+
+* Fixed a missing column when a non-standard identifier alias was used in a JOIN with the old analyzer. [#95679](https://github.com/ClickHouse/ClickHouse/pull/95679) ([Zhigao Hong](https://github.com/zghong)).
+* Fixed an incorrect result when the `grace_hash` algorithm was used with non-equi joins and the left block could not be processed completely because of size constraints on the join result. [#97866](https://github.com/ClickHouse/ClickHouse/pull/97866) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
+* Fixed a logical error with `analyzer_compatibility_join_using_top_level_identifier` and `ARRAY JOIN`. [#98179](https://github.com/ClickHouse/ClickHouse/pull/98179) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Fixed a `LOGICAL_ERROR` exception when a `RIGHT JOIN` wrapped in a `CROSS JOIN` was swapped by the `query_plan_join_swap_table` optimization in the legacy join step code path. [#98279](https://github.com/ClickHouse/ClickHouse/pull/98279) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a "Pipeline stuck" exception in `full_sorting_merge` joins caused by a deadlock in `PingPongProcessor` when the `FilterBySetOnTheFly` optimization created a circular dependency with `MergeJoinTransform`. [#98454](https://github.com/ClickHouse/ClickHouse/pull/98454) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a logical error exception when `CROSS JOIN` was used together with `INNER JOIN USING`. [#98459](https://github.com/ClickHouse/ClickHouse/pull/98459) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` exception when `arrayJoin` was used in a filter expression with `OUTER JOIN` and `join_use_nulls` enabled. [#98464](https://github.com/ClickHouse/ClickHouse/pull/98464) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `BAD_GET` exception and incorrect query results when a non-boolean expression (e.g. `sin(col)`) was used in both `WHERE` and `SELECT` with a JOIN, due to filter push-down optimization corrupting shared DAG nodes. [#98681](https://github.com/ClickHouse/ClickHouse/pull/98681) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` "Replica decided to read in Default mode, not in WithOrder" when using `read_in_order_through_join` with parallel replicas. [#98685](https://github.com/ClickHouse/ClickHouse/pull/98685) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* `LEFT ANTI JOIN` with multiple join key columns returned wrong results when `enable_join_runtime_filters=1` (the default). [#98871](https://github.com/ClickHouse/ClickHouse/pull/98871) ([Alexander Gololobov](https://github.com/davenger)).
+* Fixed a bug in the `query_plan_convert_any_join_to_semi_or_anti_join` optimization that returned an incorrect result for unmatched rows. [#99112](https://github.com/ClickHouse/ClickHouse/pull/99112) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed an exception in functions operating on `ColumnReplicated` with unreferenced rows produced by JOIN. [#99564](https://github.com/ClickHouse/ClickHouse/pull/99564) ([Hechem Selmi](https://github.com/m-selmi)).
+* Fixed a rare case where a join with reordering could produce a wrong result. [#100790](https://github.com/ClickHouse/ClickHouse/pull/100790) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed wrong results when a JOIN with shard-by-PK optimization used the query condition cache and some parts were filtered out by cached conditions. [#100926](https://github.com/ClickHouse/ClickHouse/pull/100926) ([Groene AI](https://github.com/groeneai)).
+* Fixed a `NOT_FOUND_COLUMN_IN_BLOCK` exception when using `ARRAY JOIN` with `JOIN USING` and `analyzer_compatibility_join_using_top_level_identifier` enabled. [#101507](https://github.com/ClickHouse/ClickHouse/pull/101507) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Fixed incorrect row ordering in queries that use `ORDER BY` with the `grace_hash` join algorithm, which could produce silently incorrect output. [#102036](https://github.com/ClickHouse/ClickHouse/pull/102036) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
+* Fixed a `LOGICAL_ERROR` (Unexpected size of index type) that could occur in `RIGHT JOIN` and `FULL JOIN` queries when `max_bytes_in_join` was configured. [#102042](https://github.com/ClickHouse/ClickHouse/pull/102042) ([Jimmy Aguilar Mena](https://github.com/Ergus)).
+
+### Query and analyzer fixes {#query-and-analyzer-fixes}
+
+* Fixed how an Alias table target is saved as a DDL dependency when not fully qualified: it is now saved with the Alias table database instead of the session database. [#95175](https://github.com/ClickHouse/ClickHouse/pull/95175) ([Enric Calabuig](https://github.com/eclbg)).
+* Fixed a `Block structure mismatch in stream` error caused by unnecessary columns returned from Lazy materialization. [#96682](https://github.com/ClickHouse/ClickHouse/pull/96682) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
+* Fixed an exception in tuple comparison involving `Nothing` type elements (e.g. comparing with `NULL` tuple elements) when used with `GROUPING SETS` and `ORDER BY`. [#97509](https://github.com/ClickHouse/ClickHouse/pull/97509) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a "Context has expired" exception for correlated subqueries containing table functions like `url()`. [#97544](https://github.com/ClickHouse/ClickHouse/pull/97544) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed exceptions and incorrect behavior in `optimize_syntax_fuse_functions` with aggregate projections, Date types, and column name preservation. [#97545](https://github.com/ClickHouse/ClickHouse/pull/97545) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Removed an incorrect `replaceRegexpOne`-to-`extract` query rewrite that produced wrong results when the regexp did not match; also fixed an exception when `replaceRegexpOne` was used with `GROUP BY ... WITH CUBE` and `group_by_use_nulls=1`. [#97546](https://github.com/ClickHouse/ClickHouse/pull/97546) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `LOGICAL_ERROR` exceptions caused by `LowCardinality` inside compound types (`Variant`, `Dynamic`, `Tuple`) in `concatWithSeparator`, `format`, `IN` subqueries, `GLOBAL IN`, and joins with runtime filters. [#97831](https://github.com/ClickHouse/ClickHouse/pull/97831) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed a `LOGICAL_ERROR` exception "Chunk info was not set for chunk in MergingAggregatedTransform" when using `ARRAY JOIN` with the `merge()` table function over multiple Distributed tables combined with `GROUP BY`. [#97838](https://github.com/ClickHouse/ClickHouse/pull/97838) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed a bug where it was not possible to use CTEs with distributed insert-selects. [#97889](https://github.com/ClickHouse/ClickHouse/pull/97889) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed a column mismatch. [#97921](https://github.com/ClickHouse/ClickHouse/pull/97921) ([Kai Zhu](https://github.com/nauu)).
+* Fixed a segfault in query plan optimization when converting an outer join to an inner join with `arrayJoin` in a filter expression. [#98147](https://github.com/ClickHouse/ClickHouse/pull/98147) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` "Trying to execute PLACEHOLDER action" when correlated columns from outer queries were referenced inside lambda functions such as `arrayMap`. [#98285](https://github.com/ClickHouse/ClickHouse/pull/98285) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a logical error exception in `caseWithExpression` when the `CASE` expression involved `materialize(NULL)` or other `Nullable(Nothing)` arguments. [#98290](https://github.com/ClickHouse/ClickHouse/pull/98290) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a bad cast exception when filtering the `_table` virtual column in the `merge` table function. [#98291](https://github.com/ClickHouse/ClickHouse/pull/98291) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception when `ORDER BY ... WITH FILL` was used together with `LIMIT BY`. [#98361](https://github.com/ClickHouse/ClickHouse/pull/98361) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception "Column ... query tree node does not have valid source node" when joining a `Merge` table (wrapping a `Distributed` table) with another table. [#98376](https://github.com/ClickHouse/ClickHouse/pull/98376) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception "Column identifier is already registered" when `count_distinct_optimization` was used with a `QUALIFY` clause. [#98433](https://github.com/ClickHouse/ClickHouse/pull/98433) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception "cannot be inside Nullable type" when using `IN`/`NOT IN` with `LowCardinality` column arguments (e.g. `a NOT IN (b)` where `a` is `LowCardinality(String)`). [#98443](https://github.com/ClickHouse/ClickHouse/pull/98443) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` exception "Projection cannot increase the number of rows in a block" when merging parts with a TTL that deletes all rows and an aggregate projection with a constant `GROUP BY` key. [#98458](https://github.com/ClickHouse/ClickHouse/pull/98458) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception in `DISTINCT` queries when using aggregate projections and `materialize` caused `LowCardinality` type differences between the query and the projection. [#98462](https://github.com/ClickHouse/ClickHouse/pull/98462) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a logical error exception "Replica decided to read in WithOrder mode, not in ReverseOrder" when using parallel replicas with `optimize_aggregation_in_order`. [#98467](https://github.com/ClickHouse/ClickHouse/pull/98467) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an unexpected result with `read_in_order_use_virtual_row` and monotonic functions. [#98514](https://github.com/ClickHouse/ClickHouse/pull/98514) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Fixed a `LOGICAL_ERROR: Not-ready Set is passed as the second argument for function 'in'` when using `PREWHERE` with an `IN` subquery on MergeTree tables. [#98522](https://github.com/ClickHouse/ClickHouse/pull/98522) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception "Sorting column wasn't found in the ActionsDAG's outputs" when `query_plan_convert_join_to_in` was enabled with `query_plan_merge_expressions = 0`. [#98526](https://github.com/ClickHouse/ClickHouse/pull/98526) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` when an `Identifier` was empty after parameter substitution. [#98530](https://github.com/ClickHouse/ClickHouse/pull/98530) ([Pervakov Grigorii](https://github.com/GrigoryPervakov)).
+* Fixed distributed index analysis with expressions (not just columns) in the primary key, which led to zero filtering of redundant granules on remote replicas. [#98561](https://github.com/ClickHouse/ClickHouse/pull/98561) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed a logical error "TABLE_FUNCTION is not allowed in expression context" when a table function with an alias appeared multiple times in the same query scope (e.g. in both `PREWHERE` and `QUALIFY` clauses). [#98557](https://github.com/ClickHouse/ClickHouse/pull/98557) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception "Bad cast from type `DB::TableFunctionNode` to `DB::QueryNode`" when using the `input` table function as an argument of `remote`. [#98694](https://github.com/ClickHouse/ClickHouse/pull/98694) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception in `LogicalExpressionOptimizerPass` when a boolean function in an `equals` comparison returned a `Variant` type. [#98712](https://github.com/ClickHouse/ClickHouse/pull/98712) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `UNKNOWN_IDENTIFIER` exception when querying the `merge()` table function or `Merge` engine over tables with JSON columns that have different parameters and ALIAS columns referencing JSON sub-paths, with the new analyzer enabled. [#98753](https://github.com/ClickHouse/ClickHouse/pull/98753) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed `optimize_skip_unused_shards` optimization with the analyzer when a `Distributed` storage was used in a `View`. [#98754](https://github.com/ClickHouse/ClickHouse/pull/98754) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
+* Fixed a `LOGICAL_ERROR` exception (Block structure mismatch in `removeUnusedColumns`) that could occur with `FINAL` + `PREWHERE` + a constant `WHERE` expression + column-independent aggregates like `count()`. [#98778](https://github.com/ClickHouse/ClickHouse/pull/98778) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception "Inconsistent table names" when using the `view()` table function containing JOINs inside another JOIN (only with the old analyzer). [#98809](https://github.com/ClickHouse/ClickHouse/pull/98809) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception when composing `loop` with cluster table functions. [#98860](https://github.com/ClickHouse/ClickHouse/pull/98860) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Fixed a "RPNBuilderFunctionTreeNode has A arguments, attempted to get argument at index B" `LOGICAL_ERROR`. [#98900](https://github.com/ClickHouse/ClickHouse/pull/98900) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed an exception "Scalar doesn't exist" when querying a remote shard with `optimize_const_name_size` set and `enable_scalar_subquery_optimization = 0`. [#98979](https://github.com/ClickHouse/ClickHouse/pull/98979) ([andriibeee](https://github.com/andriibeee)).
+* Fixed `NOT_FOUND_COLUMN_IN_BLOCK` for some queries with `GROUP BY` and expressions that include inverse dictionary lookup, `Date`/`DateTime` conversion comparisons, and tuple comparisons. [#98980](https://github.com/ClickHouse/ClickHouse/pull/98980) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed a bug where `EXISTS` would ignore `LIMIT` and `OFFSET` clauses in subqueries, causing incorrect results when the subquery returned no rows due to an offset or a zero limit. [#99005](https://github.com/ClickHouse/ClickHouse/pull/99005) ([andriibeee](https://github.com/andriibeee)).
+* Fixed a "Block structure mismatch" exception when filter push-down optimization encountered an `AND` expression that short-circuited to a constant with `GROUPING SETS`. [#99010](https://github.com/ClickHouse/ClickHouse/pull/99010) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` when querying a table that has both a ROW POLICY and an ALIAS column using `dictGet`, caused by premature access to the table expression during ALIAS column resolution in the new analyzer. [#99065](https://github.com/ClickHouse/ClickHouse/pull/99065) ([Peng](https://github.com/fastio)).
+* Fixed a segfault in a recursive CTE with `remote()` + `view()`. [#99081](https://github.com/ClickHouse/ClickHouse/pull/99081) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Skip unnecessary extra index analysis when read-in-order optimization is applied. [#99084](https://github.com/ClickHouse/ClickHouse/pull/99084) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Fixed access checks during `InverseDictionaryLookupPass` by checking access only once before running the optimization pass. [#99210](https://github.com/ClickHouse/ClickHouse/pull/99210) ([Mikhail Artemenko](https://github.com/Michicosun)).
+* Fixed `optimize_skip_unused_shards` with the new analyzer when a `Distributed` table was used inside an `IN` subquery. [#99436](https://github.com/ClickHouse/ClickHouse/pull/99436) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
+* Fixed a heap-use-after-free in `INTERSECT`/`EXCEPT` when the query produced duplicate column names. [#99471](https://github.com/ClickHouse/ClickHouse/pull/99471) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a logical error in `ALTER TABLE ... DROP PART` when a typed query parameter was used for the part name. [#99489](https://github.com/ClickHouse/ClickHouse/pull/99489) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `std::length_error` exception when querying empty system tables with Pretty format via the HTTP interface. [#99541](https://github.com/ClickHouse/ClickHouse/pull/99541) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed performance degradation in the analyzer by pruning unused columns from `ARRAY JOIN`. [#99587](https://github.com/ClickHouse/ClickHouse/pull/99587) ([Dmitry Novik](https://github.com/novikd)).
+* Fixed an exception (`Bad get: has Tuple, actual type String`) in `ConditionSelectivityEstimator` when a query used `IN` with a single scalar query parameter (e.g. `WHERE col IN ({p:String})`) on a table that has column statistics and `use_statistics` enabled. [#99614](https://github.com/ClickHouse/ClickHouse/pull/99614) ([Ilya Yatsishin](https://github.com/qoega)).
+* Fixed a "Block structure mismatch" exception in queries with a `HAVING` clause where the filter expression contained both an aggregate wrapped in a NULL-producing function and `materialize(0)`. [#99915](https://github.com/ClickHouse/ClickHouse/pull/99915) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a logical error with a correlated subquery within an `untuple` argument. [#99917](https://github.com/ClickHouse/ClickHouse/pull/99917) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Fixed an "Inconsistent AST formatting" exception for `ALTER TABLE ... MODIFY QUERY` with nested subqueries containing `SETTINGS` when the `ALTER` itself also had `SETTINGS`. [#99938](https://github.com/ClickHouse/ClickHouse/pull/99938) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
+* Fixed a `LOGICAL_ERROR` exception "Not-ready Set" in the `IN` function during query plan optimization with `convertAnyJoinToSemiOrAntiJoin`. [#99939](https://github.com/ClickHouse/ClickHouse/pull/99939) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` exception "Unexpected node type for table expression ... Actual IDENTIFIER" when a scalar subquery was used inside an unresolved table function argument. [#100014](https://github.com/ClickHouse/ClickHouse/pull/100014) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed the quadratic number of run queries when `distributed_index_analysis` was used with predicates containing `IN` subqueries. [#100287](https://github.com/ClickHouse/ClickHouse/pull/100287) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a "Block structure mismatch" exception when using `GROUP BY ... WITH TOTALS HAVING` combined with `UNION DISTINCT` and nullable expressions. [#100293](https://github.com/ClickHouse/ClickHouse/pull/100293) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an "Inconsistent AST formatting" exception in debug builds when using `GROUP BY CUBE(...) WITH ROLLUP` or similar combinations. [#100376](https://github.com/ClickHouse/ClickHouse/pull/100376) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception when creating a view with column aliases and `SELECT *` or `EXCEPT`/`INTERSECT` queries. [#100386](https://github.com/ClickHouse/ClickHouse/pull/100386) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `TOO_MANY_ROWS` exception for `SELECT count()` queries with `max_rows_to_read` / `force_primary_key` when data was split across multiple parts with non-aligned granule boundaries. [#100408](https://github.com/ClickHouse/ClickHouse/pull/100408) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `NOT_FOUND_COLUMN_IN_BLOCK` cases where the projection `SELECT` part had columns that did not exist in the original `SELECT` part of the query. [#100623](https://github.com/ClickHouse/ClickHouse/pull/100623) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Allow passing a sharding key to the `cluster()` and `clusterAllReplicas()` table functions when using a table function as the source (e.g. `cluster('name', view(...), sharding_key)`). [#100665](https://github.com/ClickHouse/ClickHouse/pull/100665) ([Sergey Veletskiy](https://github.com/velom)).
+* Fixed incorrect `AggregateFunction` argument types in optimized trivial count, which caused a `NUMBER_OF_ARGUMENTS_DOESNT_MATCH` exception when querying expressions like `count(v0 + v1)` on distributed tables. [#100794](https://github.com/ClickHouse/ClickHouse/pull/100794) ([YjyJeff](https://github.com/YjyJeff)).
+* Fixed a logical error "Invalid action query tree node" when using `INTERSECT ALL` / `UNION ALL` with constant-folded expressions. [#100977](https://github.com/ClickHouse/ClickHouse/pull/100977) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an incorrect `UNKNOWN_IDENTIFIER` error when the same alias was used for multiple expressions in `SELECT`; the correct `MULTIPLE_EXPRESSIONS_FOR_ALIAS` error is now reported. [#101040](https://github.com/ClickHouse/ClickHouse/pull/101040) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception in `DirectJoinMergeTreeEntity` when pipeline blocks contained `ColumnConst` columns merged with regular columns. [#101046](https://github.com/ClickHouse/ClickHouse/pull/101046) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a spurious space in CTE column alias formatting (`WITH t (a, b)` → `WITH t(a, b)`). [#101049](https://github.com/ClickHouse/ClickHouse/pull/101049) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `remote`/`cluster` table functions failing with nested table functions like `merge` when the analyzer was enabled. [#101055](https://github.com/ClickHouse/ClickHouse/pull/101055) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `OFFSET` being applied twice in distributed queries when `prefer_localhost_replica=1`, producing fewer rows than expected. [#101071](https://github.com/ClickHouse/ClickHouse/pull/101071) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed an "Illegal type Decimal64 of start parameter" error for timeseries aggregate functions when using `serialize_query_plan=1` with parallel replicas. [#101083](https://github.com/ClickHouse/ClickHouse/pull/101083) ([Groene AI](https://github.com/groeneai)).
+* Fixed wrong query results when a large integer constant (e.g. 256, 2147483648) was used as a boolean predicate in a `WHERE` clause with `AND` on MergeTree tables. [#101287](https://github.com/ClickHouse/ClickHouse/pull/101287) ([Groene AI](https://github.com/groeneai)).
+* Fixed a crash with "Logical error: Reading from materialized CTE before materialization" when a scalar subquery referenced a chain of dependent materialized CTEs. [#101305](https://github.com/ClickHouse/ClickHouse/pull/101305) ([Groene AI](https://github.com/groeneai)).
+* Fixed an exception when casting a string with trailing data to the empty `Tuple()` type. [#102011](https://github.com/ClickHouse/ClickHouse/pull/102011) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a logical error when parsing an incorrect empty tuple string. [#102289](https://github.com/ClickHouse/ClickHouse/pull/102289) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed incorrect aggregation results (duplicate rows) when using `optimize_aggregation_in_order=1` with `GROUP BY` columns ordered differently from the table's sorting key. [#102299](https://github.com/ClickHouse/ClickHouse/pull/102299) ([Groene AI](https://github.com/groeneai)).
+* Fixed an exception in `getStructureOfRemoteTable` when the local shard returned empty columns due to concurrent DDL. [#102604](https://github.com/ClickHouse/ClickHouse/pull/102604) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Optimized row policy OR-chains to `IN` in the new analyzer. [#102915](https://github.com/ClickHouse/ClickHouse/pull/102915) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed wrong results returned by `WHERE x AND toNullable(N)` on `MergeTree` tables when `N` is an integer wider than `UInt8` (e.g. `256`, `65535`, `2147483648`, or any negative integer). [#103077](https://github.com/ClickHouse/ClickHouse/pull/103077) ([Groene AI](https://github.com/groeneai)).
+
+### MergeTree and storage fixes {#mergetree-and-storage-fixes}
+
+* Fixed a logical error when attaching a part in MergeTree if there were several chained renames between detaching and attaching. [#96351](https://github.com/ClickHouse/ClickHouse/pull/96351) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed non-deterministic `uncompressed_hash` computation for Compact MergeTree parts when multiple compression codecs are used, which could cause incorrect deduplication behavior. [#97522](https://github.com/ClickHouse/ClickHouse/pull/97522) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `MEMORY_LIMIT_EXCEEDED` exceptions being incorrectly reported as `CORRUPTED_DATA` during SummingMergeTree and CoalescingMergeTree merges. [#97537](https://github.com/ClickHouse/ClickHouse/pull/97537) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
+* `hasPartitionId` now returns false if another partition with a higher partition ID exists in the data part set. [#97748](https://github.com/ClickHouse/ClickHouse/pull/97748) ([Mikhail Artemenko](https://github.com/Michicosun)).
+* Fixed a mutation after a lightweight update with secondary indices. [#98044](https://github.com/ClickHouse/ClickHouse/pull/98044) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed incorrect results of FINAL queries when mixing primary key and non-primary-key skip indexes. [#98097](https://github.com/ClickHouse/ClickHouse/pull/98097) ([Raúl Marín](https://github.com/Algunenano)).
+* If the partition key columns are not covered by the sorting key, partition pruning could incorrectly skip partitions containing rows that should "win" during FINAL deduplication. [#98242](https://github.com/ClickHouse/ClickHouse/pull/98242) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed a potential deadlock when two concurrent `MOVE PARTITION` operations work with the same pair of tables in opposite directions. [#98264](https://github.com/ClickHouse/ClickHouse/pull/98264) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` exception "Invalid binary search result in `MergeTreeSetIndex`" triggered by `toDate` conversion on key columns with data crossing the 65535 boundary. [#98276](https://github.com/ClickHouse/ClickHouse/pull/98276) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed sporadic deduplication failure where re-inserts were incorrectly deduplicated due to inconsistent cleanup ordering between the `blocks/` and `deduplication_hashes/` ZooKeeper directories. [#98293](https://github.com/ClickHouse/ClickHouse/pull/98293) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `MATERIALIZE INDEX` and `MATERIALIZE PROJECTION` mutations getting stuck when the index or projection is dropped before the mutation finishes. [#98369](https://github.com/ClickHouse/ClickHouse/pull/98369) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed incorrect partition pruning results after merging parts with `Nullable` partition key columns, caused by wrong min-max index bounds. [#98405](https://github.com/ClickHouse/ClickHouse/pull/98405) ([Amos Bird](https://github.com/amosbird)).
+* Fixed a `LOGICAL_ERROR` exception in `renameAndCommitEmptyParts` that could occur when `TRUNCATE TABLE` ran concurrently with `OPTIMIZE TABLE` using MergeTree transactions. [#98508](https://github.com/ClickHouse/ClickHouse/pull/98508) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a decimal overflow when partition pruning with `DateTime64`. [#98628](https://github.com/ClickHouse/ClickHouse/pull/98628) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed outdated data parts resurrection caused by incorrectly cleaning up empty covering parts. [#98698](https://github.com/ClickHouse/ClickHouse/pull/98698) ([Shaohua Wang](https://github.com/tiandiwonder)).
+* Fixed detecting set skip index usefulness with an `OR` with false (i.e. `or(x, 0)`) predicate. [#98776](https://github.com/ClickHouse/ClickHouse/pull/98776) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed skip indexes (and primary key conditions) not being applied for ALIAS columns when query plan expression merging is disabled (`query_plan_merge_expressions = 0` or `query_plan_enable_optimizations = 0`). [#98960](https://github.com/ClickHouse/ClickHouse/pull/98960) ([Peng](https://github.com/fastio)).
+* Fixed incorrect or insufficient pruning when `startsWith`, `LIKE`, or `NOT LIKE` were used with a `FixedString` column. Additionally, the `FixedString`-to-`String` cast function can now prune granules when wrapped around a key column. [#99001](https://github.com/ClickHouse/ClickHouse/pull/99001) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed an exception when reading patch parts (lightweight updates) without the `_part_offset` column in the query plan. [#99023](https://github.com/ClickHouse/ClickHouse/pull/99023) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* A query like `SELECT * FROM table WHERE pk_id = ''` where `pk_id` is a `String` primary key now correctly uses the primary key index for filtering granules. [#99027](https://github.com/ClickHouse/ClickHouse/pull/99027) ([Shankar Iyer](https://github.com/shankar-iyer)).
+* Fixed an exception when creating a table with an `EPHEMERAL` column that has the same name as a virtual column (e.g. `_part_offset`). [#99031](https://github.com/ClickHouse/ClickHouse/pull/99031) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `LOGICAL_ERROR` due to patch parts column order mismatch. [#99164](https://github.com/ClickHouse/ClickHouse/pull/99164) ([Pablo Marcos](https://github.com/pamarcos)).
+* Fixed `ALTER TABLE UPDATE`/`DELETE` failing with a `Missing columns` error when a table has a MATERIALIZED column whose expression depends on an EPHEMERAL column. [#99281](https://github.com/ClickHouse/ClickHouse/pull/99281) ([Yash](https://github.com/Onyx2406)).
+* Fixed compatibility when upgrading replicated tables with implicit minmax indices from 25.10 to newer versions. [#99392](https://github.com/ClickHouse/ClickHouse/pull/99392) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed rare incorrect marking of a data part as broken and detaching it after a `DETACH`/`ATTACH TABLE` query. [#99529](https://github.com/ClickHouse/ClickHouse/pull/99529) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a vertical merge `rows_sources` assertion failure when `SYSTEM STOP/START MERGES` toggles rapidly during a merge of a table with `Dynamic` columns. [#99532](https://github.com/ClickHouse/ClickHouse/pull/99532) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed incorrect partition pruning for `toWeek()` that caused queries with `WHERE toWeek(date, mode) = N` to return empty results for weeks 49–52 on tables partitioned by `toYYYYMM(date)`. [#99542](https://github.com/ClickHouse/ClickHouse/pull/99542) ([Takumi Hara](https://github.com/takumihara)).
+* Fixed a `LOGICAL_ERROR` when using `ALTER TABLE ADD COLUMN` to create an `EPHEMERAL` column with the same name as a virtual column (e.g. `_part_offset`). [#99549](https://github.com/ClickHouse/ClickHouse/pull/99549) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `CLEAR COLUMN` not rebuilding projections and not re-evaluating materialized columns that depend on the cleared column, which could cause exceptions or data corruption during subsequent merges. [#99565](https://github.com/ClickHouse/ClickHouse/pull/99565) ([Desel72](https://github.com/Desel72)).
+* A part with unknown projections is no longer marked as lost forever. [#99623](https://github.com/ClickHouse/ClickHouse/pull/99623) ([Sema Checherinda](https://github.com/CheSema)).
+* Fixed a dangling reference in `injectRequiredColumns` causing a crash during merge. [#99679](https://github.com/ClickHouse/ClickHouse/pull/99679) ([Tuan Pham Anh](https://github.com/tuanpach)).
+* Fixed a logical error during merge of projection parts after `CLEAR COLUMN` on a table with projections and compact parts. [#100068](https://github.com/ClickHouse/ClickHouse/pull/100068) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed a `LOGICAL_ERROR` "Stream ... not found" when inserting into a table with nested `Array(JSON)` columns in wide parts with `optimize_on_insert=0`. [#100475](https://github.com/ClickHouse/ClickHouse/pull/100475) ([Pavel Kruglov](https://github.com/Avogar)).
+* Evaluate engine arguments for `StorageAlias` before storing the definition, so that expressions like `currentDatabase()` are resolved to literals before being saved to the database. [#100902](https://github.com/ClickHouse/ClickHouse/pull/100902) ([Nikolay Degterinsky](https://github.com/evillique)).
+* Fixed `divide` and `intDiv` returning `ILLEGAL_DIVISION` when used in filter expressions during index analysis in some cases. [#100928](https://github.com/ClickHouse/ClickHouse/pull/100928) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed a `minmax_count_projection` and trivial `COUNT(*)` optimization being permanently disabled after a lightweight delete, even after all parts with a lightweight delete mask were merged away. [#101212](https://github.com/ClickHouse/ClickHouse/pull/101212) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a data race on `storage_id` in `IStorage::getDependentViewsByColumn`. [#101385](https://github.com/ClickHouse/ClickHouse/pull/101385) ([Nikolay Degterinsky](https://github.com/evillique)).
+* Fixed `materialize_skip_indexes_on_merge=false` not suppressing text (full-text) indexes during merge. Previously, only non-text skip indexes (minmax, set, bloom_filter) were suppressed. [#101932](https://github.com/ClickHouse/ClickHouse/pull/101932) ([Groene AI](https://github.com/groeneai)).
+* Vector similarity index cache entries are now removed after part removal (e.g. during a merge), fixing entries never being evicted due to mismatched cache keys. [#99575](https://github.com/ClickHouse/ClickHouse/pull/99575) ([Seva Potapov](https://github.com/seva-potapov)).
+* Fixed a false `LOGICAL_ERROR` exception during filesystem cache dynamic resize due to a race condition in SLRU sub-queue promotion. [#99850](https://github.com/ClickHouse/ClickHouse/pull/99850) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a possible logical error during reading of Map subcolumns. [#101641](https://github.com/ClickHouse/ClickHouse/pull/101641) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed exact subcolumn match priority over prefix match in `getSubcolumnData` to avoid a possible crash. [#101645](https://github.com/ClickHouse/ClickHouse/pull/101645) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed using wrong extremes in a min-max index created on a JSON column, which led to wrong query results. [#101918](https://github.com/ClickHouse/ClickHouse/pull/101918) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed an SLRU race bug in the filesystem cache (26.1+) that could lead to a space reservation logical error. [#101991](https://github.com/ClickHouse/ClickHouse/pull/101991) ([Kseniia Sumarokova](https://github.com/kssenii)).
+* Fixed a `Having zero bytes` logical error from the cache arising from a remote object being overwritten between `list` and `read`, which previously resulted in stale object metadata. [#101219](https://github.com/ClickHouse/ClickHouse/pull/101219) ([Kseniia Sumarokova](https://github.com/kssenii)).
+* Fixed a `file_offset_of_buffer_end <= getFileSize()` assertion failure when reading from `Log` or `StripeLog` tables on S3 object storage with concurrent writes. [#100763](https://github.com/ClickHouse/ClickHouse/pull/100763) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed cache size capping on config reload. [#100659](https://github.com/ClickHouse/ClickHouse/pull/100659) ([Aleksei Filatov](https://github.com/aalexfvk)).
+* Fixed a `LOGICAL_ERROR` abort during SLRU filesystem cache dynamic resize caused by shared eviction statistics across sub-queues and an incorrect recovery path for failed candidates. [#102396](https://github.com/ClickHouse/ClickHouse/pull/102396) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed a `minmax_count_projection` and trivial `COUNT(*)` optimization being permanently disabled after a lightweight delete. [#102900](https://github.com/ClickHouse/ClickHouse/pull/102900) ([Anton Popov](https://github.com/CurtizJ)).
+
+### Data type and serialization fixes {#data-type-and-serialization-fixes}
+
+* Fixed a wrong result or exception during reading of subcolumns of ALIAS columns. [#95408](https://github.com/ClickHouse/ClickHouse/pull/95408) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed the `sumCount` aggregate function being unable to read older serialized states after the introduction of `Nullable(Tuple)`. [#97502](https://github.com/ClickHouse/ClickHouse/pull/97502) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed a logical error about a missing stream during `INSERT SELECT` with JSON and buckets in shared data. [#97523](https://github.com/ClickHouse/ClickHouse/pull/97523) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed possible crashes during reading of empty granules in advanced shared data in JSON. [#97778](https://github.com/ClickHouse/ClickHouse/pull/97778) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed JIT miscompilation of the `sign` function for integer types wider than `Int8` — values outside the -128..127 range could produce an incorrect sign. [#98012](https://github.com/ClickHouse/ClickHouse/pull/98012) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed the `ProtobufList` format not working with the Kafka engine due to read state not being reset between messages. [#98151](https://github.com/ClickHouse/ClickHouse/pull/98151) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed silent data corruption when inserting a Parquet/Arrow `Date` column into an `Enum` column — the incompatible type conversion is now properly rejected instead of storing invalid enum values. [#98364](https://github.com/ClickHouse/ClickHouse/pull/98364) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception when reading an Arrow file with an `Array` column into a table with a `Nested` column. [#98365](https://github.com/ClickHouse/ClickHouse/pull/98365) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception when reading from `Nullable(Tuple(...))` where a Tuple element name collides with the Nullable `null` subcolumn. [#98372](https://github.com/ClickHouse/ClickHouse/pull/98372) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed incorrect Parquet `Bool`-to-`FixedString` conversion in the native V3 reader that produced raw bytes instead of a string representation. [#98378](https://github.com/ClickHouse/ClickHouse/pull/98378) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `tryGetColumnDescription` to filter subcolumns by parent column kind, consistent with other column lookup methods. [#98391](https://github.com/ClickHouse/ClickHouse/pull/98391) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed column rollback in the Buffer engine when handling an exception during appending a new block. The old logic could lead to corrupted in-memory column state. [#98551](https://github.com/ClickHouse/ClickHouse/pull/98551) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed an exception `Bad cast from type ColumnConst to ColumnDynamic` in null-safe comparison (`<=>` / `IS NOT DISTINCT FROM`) with const `Dynamic` or `Variant` columns and `NULL`. Also fixed `IS DISTINCT FROM` with `Dynamic`/`Variant` vs `NULL` always incorrectly returning 0. [#98553](https://github.com/ClickHouse/ClickHouse/pull/98553) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `parseDateTimeBestEffort` incorrectly parsing words starting with month/weekday prefixes. [#98742](https://github.com/ClickHouse/ClickHouse/pull/98742) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed a `reverseUTF8` exception on invalid (truncated) UTF-8 input. [#98770](https://github.com/ClickHouse/ClickHouse/pull/98770) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` exception in financial functions (`financialNetPresentValue`, `financialInternalRateOfReturn`, etc.) when `BFloat16` type arguments are passed. [#98958](https://github.com/ClickHouse/ClickHouse/pull/98958) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* SummingMergeTree no longer sums `Bool` (and other domain type) columns; `Bool` values are kept as-is instead of being arithmetically summed. [#98976](https://github.com/ClickHouse/ClickHouse/pull/98976) ([Yash](https://github.com/Onyx2406)).
+* Fixed undefined behavior (null pointer dereference) when altering a version/sign/is_deleted column to `EPHEMERAL` or `ALIAS` in MergeTree engines. Such alterations are now properly rejected. [#98985](https://github.com/ClickHouse/ClickHouse/pull/98985) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `parseDateTimeBestEffort` incorrectly parsing words starting with month prefixes in DD-month-YYYY format. [#99350](https://github.com/ClickHouse/ClickHouse/pull/99350) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed `CHECK TABLE` with sparse serialization inside a Tuple with Dynamic. [#99351](https://github.com/ClickHouse/ClickHouse/pull/99351) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed a logical error `unordered_map::at: key not found` in the Avro output format when serializing `Enum8`/`Enum16` columns with values not present in the enum definition. [#99332](https://github.com/ClickHouse/ClickHouse/pull/99332) ([Desel72](https://github.com/Desel72)).
+* Fixed a bug where comparing `Time[64]` and `DateTime[64]` types was confusing; `Time[64]` values are now promoted to `DateTime[64]` by adding `1970-01-01` as the date part. [#99267](https://github.com/ClickHouse/ClickHouse/pull/99267) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed `\N` (NULL) deserialization for the `Variant` type in Escaped/Raw text formats. [#99648](https://github.com/ClickHouse/ClickHouse/pull/99648) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed undefined behavior in the Avro format reader when reading numeric values that overflow the target column type. Queries now fail on overflows instead of silently producing incorrect values. [#99697](https://github.com/ClickHouse/ClickHouse/pull/99697) ([asyablue22](https://github.com/asyablue22)).
+* Fixed a false-positive abort in `NativeReader` when deserializing a Native format stream with a row-count mismatch: changed from `LOGICAL_ERROR` to `INCORRECT_DATA`. [#99822](https://github.com/ClickHouse/ClickHouse/pull/99822) ([Rahul Nair](https://github.com/motsc)).
+* Fixed a process abort in `Tuple` column deserialization when the serialization kind in the binary stream is `DETACHED`. [#99823](https://github.com/ClickHouse/ClickHouse/pull/99823) ([Rahul Nair](https://github.com/motsc)).
+* Fixed the `aggregate_functions_null_for_empty` setting to work with aggregate functions returning non-Nullable types such as `Array` or `Map` (e.g. `groupArray`, `sumMap`). [#99839](https://github.com/ClickHouse/ClickHouse/pull/99839) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` exception in the `midpoint` function when called with mixed signed/unsigned integer types. [#99867](https://github.com/ClickHouse/ClickHouse/pull/99867) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a `LOGICAL_ERROR` exception in queries involving `Dynamic` columns with cross joins and runtime filters, caused by `ColumnVariant::filter` sharing variant column pointers instead of cloning them in the `hasOnlyNulls` optimization path. [#100234](https://github.com/ClickHouse/ClickHouse/pull/100234) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed an array-of-variant bug that could reinterpret the data type upon calling `arrayFirst`/`arrayLast`. For example, `Array(Variant(Date, Bool))` was converted to `Bool` when the actual underlying variant type was `Date`. [#100255](https://github.com/ClickHouse/ClickHouse/pull/100255) ([timothygk](https://github.com/timothygk)).
+* Fixed `CSV` and `MsgPack` formats not being able to parse `Nullable(Tuple)` properly. [#100038](https://github.com/ClickHouse/ClickHouse/pull/100038) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed `accurateCastOrDefault` and `to*OrDefault` functions not preserving Const column type for constant inputs. [#100132](https://github.com/ClickHouse/ClickHouse/pull/100132) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Omitted query parameters with `LowCardinality(Nullable(T))` type now correctly default to `NULL`, the same as `Nullable(T)`. [#100144](https://github.com/ClickHouse/ClickHouse/pull/100144) ([Denys Melnyk](https://github.com/germiBest)).
+* Fixed signed integer overflow (undefined behavior) in `toStartOfInterval` when called with very large millisecond/microsecond interval values on high-precision `DateTime64`. [#100156](https://github.com/ClickHouse/ClickHouse/pull/100156) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed join runtime filters on top of the `Variant` data type. [#100182](https://github.com/ClickHouse/ClickHouse/pull/100182) ([Dmitry Novik](https://github.com/novikd)).
+* Fixed a `Time64`-to-`UInt64` cast that could clamp values to 24 hours. [#100025](https://github.com/ClickHouse/ClickHouse/pull/100025) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed an exception when computing the common supertype for empty and non-empty tuples with `use_variant_as_common_type` enabled. [#100699](https://github.com/ClickHouse/ClickHouse/pull/100699) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed undefined behavior in `positiveModulo` when the unsigned divisor does not fit in the signed result type. [#100705](https://github.com/ClickHouse/ClickHouse/pull/100705) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed undefined behavior (signed integer overflow) in `toStartOfInterval` when using Week, Quarter, or Year intervals with an origin argument and extreme interval values. [#100817](https://github.com/ClickHouse/ClickHouse/pull/100817) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed `If`, `Distinct`, `DistinctIf`, and `IfState` aggregate function combinators with a `Tuple` return type and one or more `Nullable` argument being unable to read older serialized states after the introduction of `Nullable(Tuple)`. [#100826](https://github.com/ClickHouse/ClickHouse/pull/100826) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* `cast_keep_nullable`, when enabled, no longer throws when casting a `Dynamic` null to a `Variant`. [#100864](https://github.com/ClickHouse/ClickHouse/pull/100864) ([Seva Potapov](https://github.com/seva-potapov)).
+* Fixed an exception in `intDiv`/`intDivOrZero` on arrays of nullable tuples. [#100895](https://github.com/ClickHouse/ClickHouse/pull/100895) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed undefined behavior (signed integer overflow) in `parseDateTimeBestEffort` when parsing datetime strings with more than 18 fractional-second digits. [#100948](https://github.com/ClickHouse/ClickHouse/pull/100948) ([Vasily Chekalkin](https://github.com/bacek)).
+* Fixed the `sumCountOrDefault` aggregate function with one or more `Nullable` argument being unable to read older serialized states after the introduction of `Nullable(Tuple)`. [#101021](https://github.com/ClickHouse/ClickHouse/pull/101021) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed ALIAS columns with `DateTime`/`DateTime64` types not applying timezone conversion when the declared timezone differed from the expression timezone. [#101043](https://github.com/ClickHouse/ClickHouse/pull/101043) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Strip `Nullable` from the result column in `arrayIntersect` and related functions to avoid a serialization/deserialization mismatch. [#101569](https://github.com/ClickHouse/ClickHouse/pull/101569) ([George Larionov](https://github.com/george-larionov)).
+* Fixed `positiveModulo(tuple, number)` incorrectly dispatching to division instead of modulo. [#101709](https://github.com/ClickHouse/ClickHouse/pull/101709) ([ClickGap AI Bot](https://github.com/clickgapai)).
+* Fixed incorrect output in `formatDateTime` with the `%W` formatter under certain non-default formatting settings. [#101847](https://github.com/ClickHouse/ClickHouse/pull/101847) ([Robert Schulze](https://github.com/rschu1ze)).
+* Fixed a type mismatch exception in `transform` when the default column is const on some blocks. [#100616](https://github.com/ClickHouse/ClickHouse/pull/100616) ([Pavel Kruglov](https://github.com/Avogar)).
+* Allow empty row groups in Parquet. [#100653](https://github.com/ClickHouse/ClickHouse/pull/100653) ([Vitaly Baranov](https://github.com/vitlibar)).
+* `min`/`max`/`argMin`/`argMax` now treat NaN consistently with `ORDER BY`: NaN is always skipped (returned only when all values are NaN). Previously, results depended on NaN position in the data due to IEEE 754 unordered comparison semantics. [#100448](https://github.com/ClickHouse/ClickHouse/pull/100448) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed wrong date data type inference in case of overflow after timezone adjustment. [#102674](https://github.com/ClickHouse/ClickHouse/pull/102674) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed `CASE` with a `Dynamic` expression returning `ELSE` for all rows. [#102684](https://github.com/ClickHouse/ClickHouse/pull/102684) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed flattened `Dynamic` type serialization with binary-encoded data types. [#102692](https://github.com/ClickHouse/ClickHouse/pull/102692) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed `cast_string_to_date_time_mode` being ignored for `CAST` to `Nullable(DateTime)`. [#103035](https://github.com/ClickHouse/ClickHouse/pull/103035) ([Pavel Kruglov](https://github.com/Avogar)).
+* Made the null representation in serialization of replicated and sparse columns respect settings (e.g. `format_tsv_null_representation`). [#102888](https://github.com/ClickHouse/ClickHouse/pull/102888) ([Hechem Selmi](https://github.com/m-selmi)).
+
+### Text index and skip index fixes {#text-index-and-skip-index-fixes}
+
+* Fixed usage of the text index with other skip indexes. Previously, logical errors such as "Trying to get non-existing mark" could be thrown when a query filter used a text index and other regular skip indexes simultaneously. [#98555](https://github.com/ClickHouse/ClickHouse/pull/98555) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed rebuild of text indexes on merges with TTL. [#99107](https://github.com/ClickHouse/ClickHouse/pull/99107) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed too strict validation of the text index preprocessor. [#99359](https://github.com/ClickHouse/ClickHouse/pull/99359) ([Anton Popov](https://github.com/CurtizJ)).
+* Removed support for negated functions (`notEquals`, `notLike`, `notIn`) in text index analysis. These functions could never skip any granules, so analyzing the index for them only added overhead. [#99393](https://github.com/ClickHouse/ClickHouse/pull/99393) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a `NOT_FOUND_COLUMN_IN_BLOCK` exception when a text index predicate (e.g. `hasAllTokens`) was referenced in both `SELECT` and `WHERE` clauses via an alias. [#99504](https://github.com/ClickHouse/ClickHouse/pull/99504) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed incorrect results when using `hasAllTokens` with `OR` across columns that have separate text indexes. [#99505](https://github.com/ClickHouse/ClickHouse/pull/99505) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed reading of the text index in a table with existing lightweight deletes and row policies. [#99661](https://github.com/ClickHouse/ClickHouse/pull/99661) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed analysis of predicates with the `IN` function by the text index with the preprocessor, and fixed a collision of searched tokens that could lead to incorrect results. [#99755](https://github.com/ClickHouse/ClickHouse/pull/99755) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed incorrect usage of the text index with `startsWith` and `endsWith` functions for tokenizers that do not support substring matching (`array`, `splitByString`). Previously, these tokenizers could silently produce wrong results. [#100151](https://github.com/ClickHouse/ClickHouse/pull/100151) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a rare crash when a "Memory Limit" exception was thrown while building the text index. [#100213](https://github.com/ClickHouse/ClickHouse/pull/100213) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed "Not-ready Set is passed as the second argument" errors during analysis of a text index built on top of `mapValues` for predicates containing an `IN` clause. [#100224](https://github.com/ClickHouse/ClickHouse/pull/100224) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a crash when using a text search index with an `IN` clause containing a tuple subquery, e.g. `WHERE (id, str) IN (SELECT (id, str) FROM ...)`, or when the number of columns in the subquery did not match the tuple on the left side of `IN`. [#100959](https://github.com/ClickHouse/ClickHouse/pull/100959) ([Anton Popov](https://github.com/CurtizJ)).
+* The `splitByString` tokenizer now rejects empty separator strings. [#101928](https://github.com/ClickHouse/ClickHouse/pull/101928) ([Robert Schulze](https://github.com/rschu1ze)).
+* The `sparseGrams` tokenizer generated longer tokens than the provided max length (due to a hard-coded `+2` in the implementation). [#101934](https://github.com/ClickHouse/ClickHouse/pull/101934) ([Elmi Ahmadov](https://github.com/ahmadov)).
+* Fixed an exception when querying `Merge` or `Distributed` tables with a full-text index and combined filter conditions that mix `has*Tokens` with `LIKE`, while `query_plan_direct_read_from_text_index` is enabled. [#101939](https://github.com/ClickHouse/ClickHouse/pull/101939) ([Jimmy Aguilar Mena](https://github.com/Ergus)).
+* Fixed `hasToken`/`hasTokenOrNull` with separator-only needles (e.g. `'()'`, `'!!!'`) on columns with a text index: previously the index silently skipped all granules instead of throwing `BAD_ARGUMENTS` (for `hasToken`) or returning `NULL` (for `hasTokenOrNull`). [#102544](https://github.com/ClickHouse/ClickHouse/pull/102544) ([Jimmy Aguilar Mena](https://github.com/Ergus)).
+* Full text index settings (`enable_full_text_index`, `allow_experimental_full_text_index`, `use_skip_indexes_on_data_read`) are no longer disabled when the `compatibility` setting points to a version older than 26.1. [#102422](https://github.com/ClickHouse/ClickHouse/pull/102422) ([Nikita Fomichev](https://github.com/fm4v)).
+* Added support for `ALIAS` columns in the text index direct read optimization. [#103037](https://github.com/ClickHouse/ClickHouse/pull/103037) ([Anton Popov](https://github.com/CurtizJ)).
+
+### Data lake fixes {#data-lake-fixes}
+
+* Fixed a logical race on snapshot version change in the `DeltaLake` table engine, and removed redundant heavy snapshot reloads. [#96226](https://github.com/ClickHouse/ClickHouse/pull/96226) ([Kseniia Sumarokova](https://github.com/kssenii)).
+* Fixed a `DUPLICATE_COLUMN` exception and silent NULLs when reading Delta Lake tables that use column mapping "name" mode with struct fields whose names contain dots. [#98013](https://github.com/ClickHouse/ClickHouse/pull/98013) ([Caio Ishizaka Costa](https://github.com/ch-caioishizaka)).
+* Fixed a bug when using the Unity catalog on top of GCS. [#98456](https://github.com/ClickHouse/ClickHouse/pull/98456) ([Melvyn Peignon](https://github.com/melvynator)).
+* `DataLakeCatalog` now respects the server's `http_forbid_headers` configuration when validating the `auth_header` setting. [#98827](https://github.com/ClickHouse/ClickHouse/pull/98827) ([Michael Anastasakis](https://github.com/michael-anastasakis)).
+* Creating, attaching to, and updating local data lake tables outside user paths is now forbidden, checked when creating and updating `IDataLakeMetadata`. [#98936](https://github.com/ClickHouse/ClickHouse/pull/98936) ([Daniil Ivanik](https://github.com/divanik)).
+* Fixed Iceberg BigLake reads: ADC credentials are now forwarded to the GCS S3 client (fixing 403 errors), OAuth2 credentials are URL-encoded before sending, and namespace traversal no longer aborts on BigLake HTTP 400 responses. [#98998](https://github.com/ClickHouse/ClickHouse/pull/98998) ([Nikita Fomichev](https://github.com/fm4v)).
+* Fixed an out-of-bounds error when querying only virtual columns from an Iceberg table with Avro data. [#99080](https://github.com/ClickHouse/ClickHouse/pull/99080) ([alesapin](https://github.com/alesapin)).
+* Fixed a crash in `ALTER TABLE ... REMOVE SETTINGS` for the Iceberg table engine. [#99108](https://github.com/ClickHouse/ClickHouse/pull/99108) ([alesapin](https://github.com/alesapin)).
+* Fixed a very rare crash when an Iceberg table contains files of mixed format (ORC and Parquet). [#99168](https://github.com/ClickHouse/ClickHouse/pull/99168) ([alesapin](https://github.com/alesapin)).
+* Fixed a crash (null pointer dereference) when executing `ALTER TABLE ... MODIFY COLUMN ... COMMENT` on Iceberg tables. [#99838](https://github.com/ClickHouse/ClickHouse/pull/99838) ([Desel72](https://github.com/Desel72)).
+* ClickHouse now properly handles Spark-style tables (with a full absolute path for each file or a relative path to the common table path). [#99935](https://github.com/ClickHouse/ClickHouse/pull/99935) ([alesapin](https://github.com/alesapin)).
+* Fixed an exception when an Iceberg metadata file path setting contains a null byte. [#100283](https://github.com/ClickHouse/ClickHouse/pull/100283) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a copy-paste bug where `delta_lake_snapshot_end_version` set without `delta_lake_snapshot_start_version` was silently ignored instead of producing a `BAD_ARGUMENTS` error. [#100454](https://github.com/ClickHouse/ClickHouse/pull/100454) ([Mohammad Lareb Zafar](https://github.com/zlareb1)).
+* Fixed a logical error in sorted Iceberg tables during mutations. [#100499](https://github.com/ClickHouse/ClickHouse/pull/100499) ([alesapin](https://github.com/alesapin)).
+* Fixed the Polaris catalog with Azure, where since 25.12 the catalog added the bucket at the beginning of the path. [#100583](https://github.com/ClickHouse/ClickHouse/pull/100583) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+* Fixed a `Logical error: 'partitions_count > 0'` exception when performing consecutive `ALTER TABLE UPDATE` on a partitioned Iceberg table. [#101278](https://github.com/ClickHouse/ClickHouse/pull/101278) ([Desel72](https://github.com/Desel72)).
+* Fixed insert-select from a Delta Lake cluster with ReplicatedMergeTree. [#101299](https://github.com/ClickHouse/ClickHouse/pull/101299) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+* Throw an error when `delta_lake_snapshot_version` or CDF version settings are used without DeltaKernel enabled, instead of silently returning wrong data. [#101489](https://github.com/ClickHouse/ClickHouse/pull/101489) ([Desel72](https://github.com/Desel72)).
+* Fixed an Iceberg INSERT retry loop failing when the table was created with `iceberg_metadata_file_path` and the target metadata version already existed. [#101548](https://github.com/ClickHouse/ClickHouse/pull/101548) ([Groene AI](https://github.com/groeneai)).
+* Fixed a server crash (`LOGICAL_ERROR`) when selecting from a materialized view backed by an IcebergLocal table engine. [#101577](https://github.com/ClickHouse/ClickHouse/pull/101577) ([Groene AI](https://github.com/groeneai)).
+* Fixed a crash in IcebergLocal `ALTER TABLE ... UPDATE` when using Avro format, caused by `LowCardinality`/`Nullable` wrapper types not being unwrapped before serialization. [#102337](https://github.com/ClickHouse/ClickHouse/pull/102337) ([Desel72](https://github.com/Desel72)).
+* Added the missing `hostname` column to `system.delta_lake_metadata_log` and `system.iceberg_metadata_log`. [#102162](https://github.com/ClickHouse/ClickHouse/pull/102162) ([Michael Russell](https://github.com/Crazybus)).
+* A CoalescingMergeTree fix for the array type. [#102384](https://github.com/ClickHouse/ClickHouse/pull/102384) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+
+### S3/Azure/object storage fixes {#s3-azure-object-storage-fixes}
+
+* Fixed an exception from `CachedOnDiskReadBufferFromFile::readBigAt`. [#97890](https://github.com/ClickHouse/ClickHouse/pull/97890) ([Kseniia Sumarokova](https://github.com/kssenii)).
+* Fixed a crash where querying files with a glob pattern (e.g. `file('dir/**', 'LineAsString')`) would throw an unhandled filesystem exception if the directory contained a dangling symlink. Dangling symlinks are now silently skipped. [#98143](https://github.com/ClickHouse/ClickHouse/pull/98143) ([Mark Andreev](https://github.com/mrk-andreev)).
+* Fixed excessive memory usage (~514 MiB) during format auto-detection when reading non-Arrow data (e.g. JSON from `url()` or `file()` without an explicit format), caused by the ArrowStream reader misinterpreting the first bytes as a huge metadata length. [#98893](https://github.com/ClickHouse/ClickHouse/pull/98893) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Fixed a race condition that could cause a "ReadBuffer is canceled" exception in queries using `urlCluster` or similar cluster table functions. [#98955](https://github.com/ClickHouse/ClickHouse/pull/98955) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a misleading "inflate failed: buffer error" when reading non-existent compressed files via the `url()` table function with glob patterns. [#99034](https://github.com/ClickHouse/ClickHouse/pull/99034) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed N+1 `HeadObject` calls for S3 brace-expansion globs. [#99219](https://github.com/ClickHouse/ClickHouse/pull/99219) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Fixed cases where numbers with leading zeros in a hive partitioning path caused errors. [#99458](https://github.com/ClickHouse/ClickHouse/pull/99458) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed incorrect seek in `AsynchronousReadBufferFromFileDescriptor` with `O_DIRECT`. [#99678](https://github.com/ClickHouse/ClickHouse/pull/99678) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed a bug where ClickHouse could skip files if the `Content-Length` header was missing in their HEAD request response (for example, because of decompressive transcoding in GCS). [#99971](https://github.com/ClickHouse/ClickHouse/pull/99971) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* The server no longer fails to start when an Azure blob storage disk is configured but the endpoint is temporarily unreachable (e.g. DNS failure). [#100701](https://github.com/ClickHouse/ClickHouse/pull/100701) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed a segfault in `s3Cluster` and distributed queries due to connection pool use-after-free. [#100837](https://github.com/ClickHouse/ClickHouse/pull/100837) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Fixed an exception escaping from the S3 `Client::~Client` destructor causing server termination. [#101798](https://github.com/ClickHouse/ClickHouse/pull/101798) ([Gagan Dhakrey](https://github.com/gagandhakrey)).
+* Fixed the host and port not being logged correctly during reconnection. [#102280](https://github.com/ClickHouse/ClickHouse/pull/102280) ([Grant Holly](https://github.com/grantholly-clickhouse)).
+* Fixed a server exception in ClusterDiscovery when a static cluster (defined in config) temporarily had no live nodes. [#102661](https://github.com/ClickHouse/ClickHouse/pull/102661) ([Kseniia Sumarokova](https://github.com/kssenii)).
+
+### S3Queue fixes {#s3queue-fixes}
+
+* S3Queue: fixed a failed assert after a ZooKeeper connection loss but successful commit. [#100210](https://github.com/ClickHouse/ClickHouse/pull/100210) ([Kseniia Sumarokova](https://github.com/kssenii)).
+* Fixed the inverted description text for the `alterable` column in `system.s3_queue_settings` and `system.azure_queue_settings` — swapped the `0` and `1` meanings to match the actual code behavior. [#101703](https://github.com/ClickHouse/ClickHouse/pull/101703) ([ClickGap AI Bot](https://github.com/clickgapai)).
+
+### Security and access control fixes {#security-and-access-control-fixes}
+
+* The `loop` table function called `inner_storage->read()` directly, bypassing the interpreter layer where row policies, column-level grants, and other security checks are applied. This allowed a user restricted by row policies to read all rows via `loop(table)`. [#97682](https://github.com/ClickHouse/ClickHouse/pull/97682) ([pufit](https://github.com/pufit)).
+* Enforce `READ ON FILE` checks for scalar `file()` and `DESCRIBE TABLE file()`. [#98115](https://github.com/ClickHouse/ClickHouse/pull/98115) ([Nikolay Degterinsky](https://github.com/evillique)).
+* Accept base64 credentials without padding in HTTP Basic Auth. Some HTTP clients omit trailing `=` padding in the `Authorization: Basic` header, which previously caused authentication failures. [#98392](https://github.com/ClickHouse/ClickHouse/pull/98392) ([Amos Bird](https://github.com/amosbird)).
+* Fixed an RBAC bypass that allowed users to `DESCRIBE` any table via `remote()`, `remoteSecure()`, `cluster()`, or `clusterAllReplicas()` pointed at localhost, without requiring `SHOW_COLUMNS` privilege. [#98669](https://github.com/ClickHouse/ClickHouse/pull/98669) ([pufit](https://github.com/pufit)).
+* Fixed an issue where `system.grants` omitted the regular expression parameters for `URL` and `S3` grants in the `access_object` column. [#98987](https://github.com/ClickHouse/ClickHouse/pull/98987) ([DQ](https://github.com/il9ue)).
+* Fixed an RBAC bypass that allowed users to obtain table structure via `DESCRIBE TABLE` or `CREATE TABLE AS` on table functions (`mysql()`, `postgresql()`, `sqlite()`, `arrowFlight()`, `jdbc()`, `odbc()`, etc.) without the required source access privileges. For functions that infer schema from remote servers, this also allowed triggering outbound connections (SSRF) without authorization. [#99122](https://github.com/ClickHouse/ClickHouse/pull/99122) ([pufit](https://github.com/pufit)).
+* Clamp settings constraints in the DDL worker for distributed DDL queries. [#99317](https://github.com/ClickHouse/ClickHouse/pull/99317) ([Pablo Marcos](https://github.com/pamarcos)).
+* Fixed minor issues with TOTP authentication: the `--one-time-password` CLI option with an empty password, and validation of `<digits>` and `<period>` configuration values. [#99322](https://github.com/ClickHouse/ClickHouse/pull/99322) ([Vladimir Cherkasov](https://github.com/vdimir)).
+* Credentials in JDBC, ODBC, and NATS connection strings are now masked in query logs and `SHOW CREATE` output. For URI-style connection strings, only the password portion is masked. The `nats_token` setting is now also masked. [#99344](https://github.com/ClickHouse/ClickHouse/pull/99344) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
+* Forbid reading Google credentials from a local file, which was insecure because it allowed reading other credentials if the file path was known. [#99584](https://github.com/ClickHouse/ClickHouse/pull/99584) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+* Fixed the MySQL dictionary source bypassing `RemoteHostFilter` for inline DDL params. [#99720](https://github.com/ClickHouse/ClickHouse/pull/99720) ([Shaohua Wang](https://github.com/tiandiwonder)).
+* Fixed `system.completions` to correctly filter databases, tables, and columns by access rights in all grant combinations: per-table, per-db, and per-column revoke. [#100432](https://github.com/ClickHouse/ClickHouse/pull/100432) ([Shaohua Wang](https://github.com/tiandiwonder)).
+* Sanitize `query_id` in the HTTP handler to prevent CRLF injection into response headers via the `X-ClickHouse-Query-Id` header. [#100500](https://github.com/ClickHouse/ClickHouse/pull/100500) ([Pablo Marcos](https://github.com/pamarcos)).
+* Some catalogs could show secrets in the `SETTINGS` section of `SELECT * FROM system.databases`. This is now prevented. [#100800](https://github.com/ClickHouse/ClickHouse/pull/100800) ([Konstantin Vedernikov](https://github.com/scanhex12)).
+* Row policies were not propagated from sub-planners to the parent planner for logging, so they were missing from `query_log` for views, subqueries, and insert-selects. They are now kept inside `QueryAccessInfo` for logging. [#101044](https://github.com/ClickHouse/ClickHouse/pull/101044) ([Narasimha Pakeer](https://github.com/npakeer)).
+
+### Backup and restore fixes {#backup-and-restore-fixes}
+
+* Fixed `max_execution_time` not being applied for backup/restore. [#99205](https://github.com/ClickHouse/ClickHouse/pull/99205) ([Kseniia Sumarokova](https://github.com/kssenii)).
+* Fixed a `ReadBuffer is canceled. Can't read from it.` exception in backup/restore operations using zip archives. [#100400](https://github.com/ClickHouse/ClickHouse/pull/100400) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Validate file entry paths in backup metadata to reject path traversal, absolute paths, and empty names during `RESTORE`. [#100483](https://github.com/ClickHouse/ClickHouse/pull/100483) ([Pablo Marcos](https://github.com/pamarcos)).
+* Fixed `BACKUP FROM SNAPSHOT` AST formatting and cloning. [#101405](https://github.com/ClickHouse/ClickHouse/pull/101405) ([Pablo Marcos](https://github.com/pamarcos)).
+
+### ClickHouse Keeper fixes {#clickhouse-keeper-fixes}
+
+* Fixed a data race in the ZooKeeper client between the send thread and receive thread. [#97887](https://github.com/ClickHouse/ClickHouse/pull/97887) ([Pablo Marcos](https://github.com/pamarcos)).
+* Fixed Keeper data loss after restart when using Azure Blob Storage with `s3_plain` metadata for log storage. [#97987](https://github.com/ClickHouse/ClickHouse/pull/97987) ([Antonio Andelic](https://github.com/antonio2368)).
+* Set the `Watch` component for watch responses in `aggregated_zookeeper_log` instead of leaving it empty. [#98202](https://github.com/ClickHouse/ClickHouse/pull/98202) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed ClickHouse Keeper disconnecting Java ZooKeeper clients after an `addWatch` request. The Java client expects a 4-byte `ErrorResponse` body, but Keeper sent an empty body, causing `EOFException` and session disconnect. [#98499](https://github.com/ClickHouse/ClickHouse/pull/98499) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed `zk_followers` and `zk_synced_followers` Keeper metrics not decreasing when a follower goes down. Added new `zk_learners` and `zk_synced_non_voting_followers` metrics to the `mntr` command. [#98504](https://github.com/ClickHouse/ClickHouse/pull/98504) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed Keeper's secure raft port ignoring `cipherList` and `dhParamsFile` from the `openSSL` configuration. [#98509](https://github.com/ClickHouse/ClickHouse/pull/98509) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed misleading Keeper log messages like "Receiving request for session X took 9963 ms" where the reported time was actually spent waiting idle in `poll()` between heartbeats. [#98510](https://github.com/ClickHouse/ClickHouse/pull/98510) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed Keeper TCP connections preventing graceful server shutdown by not responding to the shutdown signal. [#98525](https://github.com/ClickHouse/ClickHouse/pull/98525) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a debug assertion in `DDLWorker` caused by a stale `first_failed_task_name` after a ZooKeeper entry was deleted during reinitialization recovery. [#99099](https://github.com/ClickHouse/ClickHouse/pull/99099) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed a Keeper crash case. [#99133](https://github.com/ClickHouse/ClickHouse/pull/99133) ([JIaQi Tang](https://github.com/JiaQiTang98)).
+* Fixed a bug in Keeper where a read request could get stuck (causing a session timeout) if a different unrelated session on the same server was closed at just the wrong moment. [#99484](https://github.com/ClickHouse/ClickHouse/pull/99484) ([Michael Kolupaev](https://github.com/al13n321)).
+* Fixed a SEGFAULT in NuRaft due to a race condition. [#100444](https://github.com/ClickHouse/ClickHouse/pull/100444) ([Pablo Marcos](https://github.com/pamarcos)).
+* Fixed `KeeperMap` `CREATE TABLE` failing with "Cannot create metadata for table" when leftover ZooKeeper nodes from a pre-25.1 partial drop were missing the `drop_lock_version` node. [#101623](https://github.com/ClickHouse/ClickHouse/pull/101623) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed UDF registry loss when a ZooKeeper session expires during periodic refresh — all user-defined functions could become unavailable until a full refresh succeeds. [#101891](https://github.com/ClickHouse/ClickHouse/pull/101891) ([Nikita Fomichev](https://github.com/fm4v)).
+* Fixed a crash in UDF refresh caused by `ZooKeeperRetriesControl` retrying on a stale (expired) ZooKeeper session without renewing it. [#102059](https://github.com/ClickHouse/ClickHouse/pull/102059) ([Nikita Fomichev](https://github.com/fm4v)).
+
+### Crash and stability fixes {#crash-and-stability-fixes}
+
+* Fixed a crash in Kusto dialect functions `bin()`, `bin_at()`, `extract()`, and `indexof()` when empty arguments are provided. [#95736](https://github.com/ClickHouse/ClickHouse/pull/95736) ([NeedmeFordev](https://github.com/spider-yamet)).
+* Fixed a server crash/assert in `mapContainsKey`/`mapContainsKeyLike` with a `tokenbf_v1` skip index. [#97826](https://github.com/ClickHouse/ClickHouse/pull/97826) ([Shankar Iyer](https://github.com/shankar-iyer)).
+* Fixed a server crash (`std::terminate`) caused by an uncaught exception in the HTTP connection pool destructor when the connection group hard limit is reached under high concurrency. [#97850](https://github.com/ClickHouse/ClickHouse/pull/97850) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed out-of-bounds access in `ColumnConst::getExtremes` that could cause a crash when `extremes = 1` is enabled. [#98263](https://github.com/ClickHouse/ClickHouse/pull/98263) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Validate corrupted data during `DDSketch` deserialization to prevent segfaults, exceptions, infinite loops, and OOM when reading corrupted `quantilesDD` aggregate function states. [#98284](https://github.com/ClickHouse/ClickHouse/pull/98284) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a rare exception in the pipeline executor, which could manifest as `Received signal 6` (in debug builds), when pipeline expansion races with query cancellation. [#98428](https://github.com/ClickHouse/ClickHouse/pull/98428) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a null pointer dereference in `dictGetOrDefault` when the key argument is `Nullable`. [#98460](https://github.com/ClickHouse/ClickHouse/pull/98460) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a pipeline deadlock when using `sort_overflow_mode = 'break'` together with window functions. [#98543](https://github.com/ClickHouse/ClickHouse/pull/98543) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a crash from dereferencing a null pointer in system tables created between snapshotting the tables in `IDatabaseTablesIterator::table()` and the tables changing in another thread during later iteration. [#98792](https://github.com/ClickHouse/ClickHouse/pull/98792) ([Grant Holly](https://github.com/grantholly-clickhouse)).
+* Fixed memory tracking drift caused by failed allocations not being rolled back, `nallocx(0)` undefined behavior, and an off-by-one in global peak tracking. Extended tracking to cover `io_uring` ring buffers. [#98915](https://github.com/ClickHouse/ClickHouse/pull/98915) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed a server crash (`std::terminate`) when executing `ALTER TABLE ... DROP PART` on a patch part after a schema change (e.g. ADD COLUMN). [#99036](https://github.com/ClickHouse/ClickHouse/pull/99036) ([Peng](https://github.com/fastio)).
+* Fixed a server crash that could occur if a memory limit exceeded exception was thrown during a cached disk read. [#99042](https://github.com/ClickHouse/ClickHouse/pull/99042) ([Shankar Iyer](https://github.com/shankar-iyer)).
+* Fixed a crash triggered by a memory limit exception thrown during patch part application. [#99086](https://github.com/ClickHouse/ClickHouse/pull/99086) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a crash on use of a Buffer table with `SAMPLE` when the destination does not support it. [#99141](https://github.com/ClickHouse/ClickHouse/pull/99141) ([Kseniia Sumarokova](https://github.com/kssenii)).
+* Fixed a heap-use-after-free when a table is dropped concurrently with a running read query. [#99483](https://github.com/ClickHouse/ClickHouse/pull/99483) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a heap-buffer-overflow in `CompressionCodecT64` and a process abort in `CompressionCodecMultiple` when decompressing malformed compressed data. The codecs now throw an exception instead of crashing. [#99680](https://github.com/ClickHouse/ClickHouse/pull/99680) ([Rahul Nair](https://github.com/motsc)).
+* Fixed an infinite loop when reading `Npy` format files with negative shape dimensions. [#99812](https://github.com/ClickHouse/ClickHouse/pull/99812) ([Desel72](https://github.com/Desel72)).
+* Fixed a global-buffer-overflow in the `CRC32` function on `FixedString` arguments when evaluated with zero rows during query plan header computation. [#99835](https://github.com/ClickHouse/ClickHouse/pull/99835) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an assertion failure in `sipHash128Keyed` (and similar keyed hash functions) when the data argument is a Map with array keys or other nested array types. [#99921](https://github.com/ClickHouse/ClickHouse/pull/99921) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an assertion failure when multiplying `NumericIndexedVector` aggregate states by an even integer constant, caused by self-XOR on aliased Roaring bitmaps in `pointwiseAddInplace`. [#99976](https://github.com/ClickHouse/ClickHouse/pull/99976) ([Desel72](https://github.com/Desel72)).
+* Fixed a nullptr dereference in the Parquet reader when the filter-in-decoder path encounters filtered-out pages. [#99677](https://github.com/ClickHouse/ClickHouse/pull/99677) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a local server crash when `CREATE DICTIONARY` has a definition with a list value containing a non-existing function. [#100036](https://github.com/ClickHouse/ClickHouse/pull/100036) ([Yakov Olkhovskiy](https://github.com/yakov-olkhovskiy)).
+* Fixed a SIGSEGV when reading patch parts after `ALTER MODIFY COLUMN`. [#100107](https://github.com/ClickHouse/ClickHouse/pull/100107) ([Nikolay Degterinsky](https://github.com/evillique)).
+* Fixed use-of-uninitialized-value in `StringSearcher.h`. [#100225](https://github.com/ClickHouse/ClickHouse/pull/100225) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Fixed a server crash (assertion failure) when using parametric aggregate functions with the Array combinator and NULL arguments, such as `quantileIfArrayArray(0.5)([[NULL]], [[1]])`. [#100679](https://github.com/ClickHouse/ClickHouse/pull/100679) ([nerve-bot](https://github.com/nerve-bot)).
+* Fixed a heap-buffer-overflow in usearch `sorted_buffer_gt::insert()` that could crash or silently corrupt memory during vector similarity search. [#100537](https://github.com/ClickHouse/ClickHouse/pull/100537) ([Dustin Healy](https://github.com/dustinhealy)).
+* Fixed a server crash (logical error "Unexpected return type from __topKFilter") when `use_top_k_dynamic_filtering` is enabled and the `ORDER BY` column has `Dynamic` or `Variant` type. [#100742](https://github.com/ClickHouse/ClickHouse/pull/100742) ([Groene AI](https://github.com/groeneai)).
+* Fixed a server crash when using the `has()` function with PREWHERE/WHERE on a Tuple key containing LowCardinality elements. [#100760](https://github.com/ClickHouse/ClickHouse/pull/100760) ([Groene AI](https://github.com/groeneai)).
+* Fixed a null pointer dereference segfault when loading dictionaries during server shutdown. [#100839](https://github.com/ClickHouse/ClickHouse/pull/100839) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+* Fixed a buffer overflow in `ULIDStringToDateTime` when the input contains non-ASCII bytes. [#100843](https://github.com/ClickHouse/ClickHouse/pull/100843) ([Konstantin Bogdanov](https://github.com/thevar1able)).
+* Fixed a crash (`LOGICAL_ERROR`) when querying a `Merge` table (or `merge()` table function) that wraps multiple tables including a `Distributed` table, with `distributed_group_by_no_merge=1` enabled. [#100859](https://github.com/ClickHouse/ClickHouse/pull/100859) ([Groene AI](https://github.com/groeneai)).
+* Fixed a crash when building a polygon dictionary from a `MergeTree` table that uses sparse columns serialization. [#100964](https://github.com/ClickHouse/ClickHouse/pull/100964) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed a crash (`Logical error: isConst/isSparse/isReplicated assertTypeEquality`) in merge algorithms when lazy column replication (`enable_lazy_columns_replication`) produces `ColumnReplicated` columns that flow into merge-sort pipelines with late-arriving inputs. [#101036](https://github.com/ClickHouse/ClickHouse/pull/101036) ([Groene AI](https://github.com/groeneai)).
+* Fixed a server crash (`SIGABRT`) when using aggregate functions with the internal-only `Null` combinator (e.g. `sumNull`, `avgNull`) and `aggregate_functions_null_for_empty = 1`. [#101147](https://github.com/ClickHouse/ClickHouse/pull/101147) ([Groene AI](https://github.com/groeneai)).
+* Fixed a use-after-free in the filesystem cache write path that could cause reads from freed memory when logging completed file segments. [#101161](https://github.com/ClickHouse/ClickHouse/pull/101161) ([Groene AI](https://github.com/groeneai)).
+* Fixed a server crash with "Trying to attach external table to a ready set without explicit elements" when distributed index analysis encounters a `GLOBAL IN` predicate whose set was built without explicit elements. [#101178](https://github.com/ClickHouse/ClickHouse/pull/101178) ([Groene AI](https://github.com/groeneai)).
+* Fixed `MAX`/`MIN` aggregate functions on `Decimal` columns returning incorrect results when JIT compilation is enabled. [#101203](https://github.com/ClickHouse/ClickHouse/pull/101203) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed a server crash (`LOGICAL_ERROR`: Bad cast from `ColumnVector` to `ColumnLowCardinality`) when querying a MergeTree table with `ORDER BY CAST(lc_column, 'Type')` where `lc_column` has a LowCardinality type. [#101220](https://github.com/ClickHouse/ClickHouse/pull/101220) ([Groene AI](https://github.com/groeneai)).
+* Fixed UB in `mergeTreeAnalyzeIndexes()` in case of an invalid optimizations argument. [#101253](https://github.com/ClickHouse/ClickHouse/pull/101253) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed a server crash (Logical error: "Variant ... is empty") when a query reads both a Tuple column containing a Dynamic Map type and its subcolumn simultaneously. [#101448](https://github.com/ClickHouse/ClickHouse/pull/101448) ([Groene AI](https://github.com/groeneai)).
+* Fixed a `LOGICAL_ERROR` crash "Current component is empty" when querying `system.part_moves_between_shards` with `enforce_keeper_component_tracking` enabled. [#101462](https://github.com/ClickHouse/ClickHouse/pull/101462) ([Groene AI](https://github.com/groeneai)).
+* Fixed a segmentation fault in `DataTypeDynamic::create()` when the fuzzer generates a malformed Dynamic type AST. [#101464](https://github.com/ClickHouse/ClickHouse/pull/101464) ([Groene AI](https://github.com/groeneai)).
+* Fixed a crash (`LOGICAL_ERROR`: "ColumnUnique can't contain null values") when comparing a `LowCardinality` column with a `Variant` NULL constant while `use_variant_default_implementation_for_comparisons` is disabled. [#101690](https://github.com/ClickHouse/ClickHouse/pull/101690) ([Groene AI](https://github.com/groeneai)).
+* Added an empty-stream guard to `Bzip2ReadBuffer` so it returns EOF instead of throwing `UNEXPECTED_END_OF_FILE` when the inner stream is empty. [#101691](https://github.com/ClickHouse/ClickHouse/pull/101691) ([ClickGap AI Bot](https://github.com/clickgapai)).
+* Fixed a use-after-free crash in the CPU lease scheduler when the wait timer outlives the worker thread whose `ProfileEvents::Counters` it references. [#101761](https://github.com/ClickHouse/ClickHouse/pull/101761) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed a use-after-scope in parallel deserialization of `Object` type dynamic paths, which could cause crashes when reading tables with many dynamic paths. [#101823](https://github.com/ClickHouse/ClickHouse/pull/101823) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed a SIGSEGV in `MergeTreeDataPartWriterWide::cancel` when a stream constructor throws during `addStreams`, leaving a null entry in `column_streams`. [#101936](https://github.com/ClickHouse/ClickHouse/pull/101936) ([Antonio Andelic](https://github.com/antonio2368)).
+* Fixed a segmentation fault in mutations on materialized columns without an expression. [#102342](https://github.com/ClickHouse/ClickHouse/pull/102342) ([zoomxi](https://github.com/zoomxi)).
+* Fixed a segfault (or `LOGICAL_ERROR` in debug builds) when reading Parquet files with bloom filter push-down enabled and `WHERE` clause equality/inequality conditions, caused by an out-of-bounds memory access in the Parquet prefetcher. [#102385](https://github.com/ClickHouse/ClickHouse/pull/102385) ([Groene AI](https://github.com/groeneai)).
+* Fixed an out-of-bounds read in string search functions (`countSubstrings`, `position`, etc.) when searching for a needle consisting entirely of null bytes. [#102401](https://github.com/ClickHouse/ClickHouse/pull/102401) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed an out-of-bounds read in `printf` with a trailing `%`. [#102472](https://github.com/ClickHouse/ClickHouse/pull/102472) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed a `LOGICAL_ERROR` crash "Unexpected number of rows in column subchunk" in the native Parquet V3 reader when reading nullable columns with a `WHERE` filter. [#102628](https://github.com/ClickHouse/ClickHouse/pull/102628) ([Groene AI](https://github.com/groeneai)).
+* Fixed a server crash (SIGSEGV) when reading Avro files with recursive schemas containing cyclic symbolic type references. Such schemas are now detected and rejected with a clear error message. [#102853](https://github.com/ClickHouse/ClickHouse/pull/102853) ([Groene AI](https://github.com/groeneai)).
+* Fixed a server crash (`LOGICAL_ERROR` assertion) when a function on a `Variant` column hits a memory limit or other non-type-conversion exception during result casting in `FunctionVariantAdaptor`. [#102855](https://github.com/ClickHouse/ClickHouse/pull/102855) ([Groene AI](https://github.com/groeneai)).
+* Fixed a server crash in debug/sanitizer builds when `std::length_error` is thrown during schema inference. [#102859](https://github.com/ClickHouse/ClickHouse/pull/102859) ([Groene AI](https://github.com/groeneai)).
+* Fixed a crash when using a view with a `WHERE` clause where the inner query produces columns with different types than the view metadata (e.g. `Nullable` from a `LEFT JOIN` with `join_use_nulls`). [#102085](https://github.com/ClickHouse/ClickHouse/pull/102085) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+
+### Other bug fixes {#other-bug-fixes}
+
+* Fixed a bug where explicit settings sent alongside `compatibility` in the same request could be silently ignored when their value matched the server default. [#97078](https://github.com/ClickHouse/ClickHouse/pull/97078) ([Raufs Dunamalijevs](https://github.com/rienath)).
+* Fixed the client reporting `NETWORK_ERROR` instead of the actual parsing error (with the correct row number) when an INSERT with parallel parsing encounters invalid data. [#97339](https://github.com/ClickHouse/ClickHouse/pull/97339) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `DROP DATABASE` with `database_atomic_wait_for_drop_and_detach_synchronously` hanging indefinitely when the query is killed. [#97586](https://github.com/ClickHouse/ClickHouse/pull/97586) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `KILL QUERY` not being able to terminate queries stuck in `WITH FILL` generation, dictionary loading via `dictGet`, or `ALTER DELETE` with `mutations_sync=1` on `ReplicatedMergeTree`. [#97589](https://github.com/ClickHouse/ClickHouse/pull/97589) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a logical error with a data masking policy query with `ON CLUSTER`. [#97594](https://github.com/ClickHouse/ClickHouse/pull/97594) ([Bharat Nallan](https://github.com/bharatnc)).
+* Fixed incorrect partition pruning when using pre-epoch `DateTime64` with the `toDate()` function. [#97746](https://github.com/ClickHouse/ClickHouse/pull/97746) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed a `Cannot schedule a file` `LOGICAL_ERROR` on `INSERT` into `Distributed` due to a race between `DROP` and `INSERT`. [#97822](https://github.com/ClickHouse/ClickHouse/pull/97822) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed a logical error "Bad cast from type DB::ColumnConst to DB::ColumnArray" in `kql_array_sort_asc`/`kql_array_sort_desc` when called with constant array arguments. [#98251](https://github.com/ClickHouse/ClickHouse/pull/98251) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* The HTTP server now returns an error message in the response body for 400 Bad Request responses caused by malformed headers, instead of an empty body. [#98268](https://github.com/ClickHouse/ClickHouse/pull/98268) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed wrong results with distributed index analysis (experimental feature) and the query condition cache. [#98269](https://github.com/ClickHouse/ClickHouse/pull/98269) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed a `MongoDB` dictionary source failing with named collections. [#98528](https://github.com/ClickHouse/ClickHouse/pull/98528) ([Pablo Marcos](https://github.com/pamarcos)).
+* Disallow dropping a column when its subcolumns are used in other columns' default/alias expressions, and use the analyzer for default expressions on `ALTER DROP COLUMN`. [#98569](https://github.com/ClickHouse/ClickHouse/pull/98569) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
+* All `DB::Exception` from `PocoHTTPClient::makeRequestInternalImpl` are now non-retryable, including `HTTP_CONNECTION_LIMIT_REACHED`. [#98598](https://github.com/ClickHouse/ClickHouse/pull/98598) ([Sema Checherinda](https://github.com/CheSema)).
+* Fixed two bugs in JIT expression compilation: a copy-paste error in `nativeCast` type checking that made integer-to-integer and float-to-float cast branches unreachable, and an incorrect `nullptr` TargetMachine passed to LLVM `PassBuilder`. [#98660](https://github.com/ClickHouse/ClickHouse/pull/98660) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an exception "Inconsistent KeyCondition behavior" in debug builds when the primary key contains NaN float values, by making `accurateLess` and `accurateEquals` handle NaN consistently with ClickHouse sort order. [#98964](https://github.com/ClickHouse/ClickHouse/pull/98964) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `windowFunnel` with `strict_deduplication` returning an incorrect level when a duplicate event was encountered. [#99003](https://github.com/ClickHouse/ClickHouse/pull/99003) ([Yash](https://github.com/Onyx2406)).
+* Make `system.trace_log` entries for ClickHouse dictionaries' auto-reloads have non-empty query IDs. [#98784](https://github.com/ClickHouse/ClickHouse/pull/98784) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+* Fixed `SYSTEM START REPLICATED VIEW` not waking up the refresh task. [#98797](https://github.com/ClickHouse/ClickHouse/pull/98797) ([Pablo Marcos](https://github.com/pamarcos)).
+* Fixed `WITH FILL STALENESS` producing extra filled rows when data is read in multiple chunks (e.g. with a small `index_granularity`). [#98895](https://github.com/ClickHouse/ClickHouse/pull/98895) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed a crash in query obfuscation for identifiers starting with an uppercase letter, such as `Ab`. [#101450](https://github.com/ClickHouse/ClickHouse/pull/101450) ([Xuewei Wang](https://github.com/Sallery-X)).
+* Fixed ignoring of `TABLE_UUID_MISMATCH` for the non-analyzer code path. [#99380](https://github.com/ClickHouse/ClickHouse/pull/99380) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed `clickhouse format --obfuscate` producing invalid SQL by obfuscating skip index types, compression codec names, database engine names, and dictionary layout/source definitions. [#99260](https://github.com/ClickHouse/ClickHouse/pull/99260) ([Raúl Marín](https://github.com/Algunenano)).
+* Validate setting changes in create queries when the engine itself also supports settings. [#99279](https://github.com/ClickHouse/ClickHouse/pull/99279) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
+* Fixed `insert_deduplication_token` being silently ignored for `INSERT SELECT` queries without `ORDER BY ALL`. Providing `insert_deduplication_token` is now sufficient to enable deduplication regardless of `ORDER BY ALL`. [#99206](https://github.com/ClickHouse/ClickHouse/pull/99206) ([Desel72](https://github.com/Desel72)).
+* Delay processing until the server has finished loading all tables. [#99700](https://github.com/ClickHouse/ClickHouse/pull/99700) ([Seva Potapov](https://github.com/seva-potapov)).
+* Fixed parsing of shell-style quotes in arguments for the `executable` table function. [#99794](https://github.com/ClickHouse/ClickHouse/pull/99794) ([Nikita Semenov](https://github.com/leftmain)).
+* Fixed async insert queries reporting zero `written_rows`, `read_rows`, and `result_rows` in `query_log` and client output. [#99879](https://github.com/ClickHouse/ClickHouse/pull/99879) ([Sema Checherinda](https://github.com/CheSema)).
+* Fixed an `INSERT` with `VALUES` failing when the data was followed by a trailing SQL comment (`--` or `/* */`) on the next line. The comment is now skipped instead of being parsed as another row. [#100016](https://github.com/ClickHouse/ClickHouse/pull/100016) ([Pratima Patel](https://github.com/pratimapatel2008)).
+* Fixed an exception in `arrayRemove` when comparing tuples with NULL components. [#100017](https://github.com/ClickHouse/ClickHouse/pull/100017) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Correctly process negative values inside `NumericIndexedVectorDataBSI`. [#100086](https://github.com/ClickHouse/ClickHouse/pull/100086) ([Daniil Ivanik](https://github.com/divanik)).
+* Fixed the `primes` table function not respecting `max_rows_to_read` properly in some cases, especially when offset and step are present. [#100199](https://github.com/ClickHouse/ClickHouse/pull/100199) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Users no longer see `NATURAL CROSS JOIN` when querying the AST of a natural join query that rewrites to a `CROSS JOIN`. [#100223](https://github.com/ClickHouse/ClickHouse/pull/100223) ([Peter Nguyen](https://github.com/petern48)).
+* A few minor function changes: h3 functions now validate boundaries better; `readWKB` checks size limits (a new setting, `max_wkb_geometry_elements`); random generator functions limit the maximum iterations. [#100270](https://github.com/ClickHouse/ClickHouse/pull/100270) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed an issue where `cutURLParameter` could incorrectly skip parameters when they appeared as substrings of other parameters. [#100280](https://github.com/ClickHouse/ClickHouse/pull/100280) ([Nikita Semenov](https://github.com/leftmain)).
+* Fixed a `LOGICAL_ERROR` exception in `estimateCompressionRatio` when the `block_size_bytes` parameter is extremely large. [#100298](https://github.com/ClickHouse/ClickHouse/pull/100298) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `DROP TABLE` hanging indefinitely on Kafka engine tables when consumers are stuck in a rebalance after a heartbeat error. [#100388](https://github.com/ClickHouse/ClickHouse/pull/100388) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Validate Npy format shape dimensions against file size and overflow limits to prevent denial of service from crafted `.npy` files. Also reject empty shapes and cap per-row memory to 2 GiB. [#100625](https://github.com/ClickHouse/ClickHouse/pull/100625) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed `session_timezone` being ignored when parsing `DateTime` values during async inserts (TCP) and all inserts over HTTP. [#100647](https://github.com/ClickHouse/ClickHouse/pull/100647) ([Sema Checherinda](https://github.com/CheSema)).
+* Made `StorageRabbitMQ::shutdown` idempotent and added defensive null checks, since it is now called twice (in `StreamingStorageRegistry` and `DatabaseCatalog`). [#100455](https://github.com/ClickHouse/ClickHouse/pull/100455) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+* Fixed a `LOGICAL_ERROR` exception when using `accurateCastOrNull` with the `QBit` target type. [#100470](https://github.com/ClickHouse/ClickHouse/pull/100470) ([Raufs Dunamalijevs](https://github.com/rienath)).
+* Fixed `LIMIT m OFFSET n WITH TIES` syntax not working (equivalent to `LIMIT n, m WITH TIES`, which already worked). [#100491](https://github.com/ClickHouse/ClickHouse/pull/100491) ([Nihal Z. Miaji](https://github.com/nihalzp)).
+* Fixed a segfault where `SerializationInfoTuple::add` did an `assert_cast` on a plain `SerializationInfo` reference while merging parts after `ALTER MODIFY COLUMN` changed a column from a non-Tuple type to a Tuple. [#100509](https://github.com/ClickHouse/ClickHouse/pull/100509) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+* Fixed an exception "No set is registered for key" when using `IN` with `Nullable(Tuple)` columns that have named fields and `LowCardinality` elements. [#100523](https://github.com/ClickHouse/ClickHouse/pull/100523) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
+* Fixed `EXECUTE AS` ignoring `FORMAT` and `INTO OUTFILE` clauses specified in the query. [#100538](https://github.com/ClickHouse/ClickHouse/pull/100538) ([pufit](https://github.com/pufit)).
+* Fixed inconsistent AST formatting for `SAMPLE` with a query-level `OFFSET`. [#100579](https://github.com/ClickHouse/ClickHouse/pull/100579) ([Pavel Kruglov](https://github.com/Avogar)).
+* Fixed "Target table doesn't exist" errors for materialized views with inner tables during async startup, caused by incorrect startup dependency ordering. [#100946](https://github.com/ClickHouse/ClickHouse/pull/100946) ([Nikolay Degterinsky](https://github.com/evillique)).
+* Fixed an exception in `optimizeLazyMaterialization` when a projection with PREWHERE is used with `ORDER BY ... LIMIT`. [#101115](https://github.com/ClickHouse/ClickHouse/pull/101115) ([Anton Popov](https://github.com/CurtizJ)).
+* Fixed an incorrect error message when calling `intExp10` with a NaN argument — it said `intExp2` instead of `intExp10`. [#101582](https://github.com/ClickHouse/ClickHouse/pull/101582) ([Krishna Chaitanya](https://github.com/Krishnachaitanyakc)).
+* Fixed `allow_statistics=0` not blocking `ALTER TABLE ADD STATISTICS` and `ALTER TABLE DROP STATISTICS`. [#101585](https://github.com/ClickHouse/ClickHouse/pull/101585) ([Krishna Chaitanya](https://github.com/Krishnachaitanyakc)).
+* Fixed `CREATE TABLE ... AS merge()` ignoring the explicit column list and instead auto-inferring columns from source tables, which caused `NOT_FOUND_COLUMN_IN_BLOCK` errors when `merge_table_max_tables_to_look_for_schema_inference` was low enough and source tables had different schemas. [#101663](https://github.com/ClickHouse/ClickHouse/pull/101663) ([Miсhael Stetsyuk](https://github.com/mstetsyuk)).
+* Fixed `RANGE_HASHED` dictionary creation silently accepting a non-existent `MAX` range attribute and using the wrong type configuration when min and max range attributes had different types. [#101732](https://github.com/ClickHouse/ClickHouse/pull/101732) ([Yakov Olkhovskiy](https://github.com/yakov-olkhovskiy)).
+* Fixed bugs in the `arrayLevenshteinDistanceWeighted` and `arraySimilarity` functions. [#101767](https://github.com/ClickHouse/ClickHouse/pull/101767) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
+* Fixed the Prometheus Query API ignoring POST form bodies. [#101794](https://github.com/ClickHouse/ClickHouse/pull/101794) ([James Cunningham](https://github.com/JTCunning)).
+* Fixed a `shouldPatchFunction` false negative in `SYSTEM INSTRUMENT ADD` when the search string first appears inside a template argument of the demangled symbol name. [#101885](https://github.com/ClickHouse/ClickHouse/pull/101885) ([Pablo Marcos](https://github.com/pamarcos)).
+* Fixed the `system.codecs` description for `AES_256_GCM_SIV` to report `AES-256` instead of `AES-128`. [#101917](https://github.com/ClickHouse/ClickHouse/pull/101917) ([Jimmy Aguilar Mena](https://github.com/Ergus)).
+* Fixed undefined behavior when parsing native protocol query packets with invalid `QueryProcessingStage` values. [#101972](https://github.com/ClickHouse/ClickHouse/pull/101972) ([Raúl Marín](https://github.com/Algunenano)).
+* Close the TCP connection when an exception occurs during initial query parsing, to prevent reading garbage from a desynchronized stream. [#101989](https://github.com/ClickHouse/ClickHouse/pull/101989) ([Raúl Marín](https://github.com/Algunenano)).
+* Fixed cases where `Time` with negative values returned a wrong result on comparison with `DateTime`. [#102056](https://github.com/ClickHouse/ClickHouse/pull/102056) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
+* Fixed missing spaces when formatting unlock snapshot. [#102063](https://github.com/ClickHouse/ClickHouse/pull/102063) ([Han Fei](https://github.com/hanfei1991)).
+* Failed to initialize on a fresh replica Alias tables without a target table in Database Replicated. [#102397](https://github.com/ClickHouse/ClickHouse/pull/102397) ([Nikolay Degterinsky](https://github.com/evillique)).
+* Plain INSERTs without materialized views no longer request excessive `ConcurrencyControl` slots and threads (`max_threads` instead of `max_insert_threads`), preventing CC slot starvation and thread count blowup on clusters with high INSERT throughput. [#102961](https://github.com/ClickHouse/ClickHouse/pull/102961) ([Sema Checherinda](https://github.com/CheSema)).
+* Reintroduced `ArrowMemoryPool` to allow throwing `MEMORY_LIMIT_EXCEEDED` to avoid kernel OOM. [#102999](https://github.com/ClickHouse/ClickHouse/pull/102999) ([Azat Khuzhin](https://github.com/azat)).
+* Fixed an incorrect argument type reported in error messages of string search functions (e.g. `locate`, `position`) when arguments are passed in swapped order (`locate(needle, haystack)` with `function_locate_has_mysql_compatible_argument_order = 1`). [#103102](https://github.com/ClickHouse/ClickHouse/pull/103102) ([Alex Kuleshov](https://github.com/0xAX)).
+* Fixed `waitForPause` hanging indefinitely when `disableFailPoint` is called with no thread paused at the failpoint. [#103119](https://github.com/ClickHouse/ClickHouse/pull/103119) ([Shaohua Wang](https://github.com/tiandiwonder)).
+
+</details>
\ No newline at end of file
diff --git a/docs/cloud/reference/01_changelog/02_release_notes/index.md b/docs/cloud/reference/01_changelog/02_release_notes/index.md
index 88e4eb2cbea..2960a384451 100644
--- a/docs/cloud/reference/01_changelog/02_release_notes/index.md
+++ b/docs/cloud/reference/01_changelog/02_release_notes/index.md
@@ -12,18 +12,19 @@ keywords: ['changelog', 'release notes', 'updates', 'new features', 'cloud chang
 -->
 
 <!--AUTOGENERATED_START-->
-| Page | Description |
-|-----|-----|
-| [v26.2 changelog for Cloud](/changelogs/26.2) | Changelog for v26.2 |
-| [v25.12 changelog for Cloud](/changelogs/25.12) | Changelog for v25.12 |
-| [v25.10 changelog for Cloud](/changelogs/25.10) | Changelog for v25.10 |
-| [v25.8 changelog for Cloud](/changelogs/25.8) | Fast release changelog for v25.8 |
-| [v25.6 changelog for Cloud](/changelogs/25.6) | Fast release changelog for v25.6 |
-| [v25.4 changelog for Cloud](/changelogs/25.4) | Fast release changelog for v25.4 |
-| [v24.12 changelog for Cloud](/changelogs/24.12) | Fast release changelog for v24.12 |
-| [v24.10 changelog for Cloud](/changelogs/24.10) | Fast release changelog for v24.10 |
-| [v24.8 changelog for Cloud](/changelogs/24.8) | Fast release changelog for v24.8 |
-| [v24.6 changelog for Cloud](/changelogs/24.6) | Fast release changelog for v24.6 |
-| [v24.5 changelog for Cloud](/changelogs/24.5) | Fast release changelog for v24.5 |
-| [v24.2 changelog for Cloud](/whats-new/changelog/24.2-fast-release) | Fast release changelog for v24.2 |
+| Page                                                                | Description                       |
+|---------------------------------------------------------------------|-----------------------------------|
+| [v26.4 changelog for Cloud](/changelogs/26.4)                       | Changelog for v26.4               |
+| [v26.2 changelog for Cloud](/changelogs/26.2)                       | Changelog for v26.2               |
+| [v25.12 changelog for Cloud](/changelogs/25.12)                     | Changelog for v25.12              |
+| [v25.10 changelog for Cloud](/changelogs/25.10)                     | Changelog for v25.10              |
+| [v25.8 changelog for Cloud](/changelogs/25.8)                       | Fast release changelog for v25.8  |
+| [v25.6 changelog for Cloud](/changelogs/25.6)                       | Fast release changelog for v25.6  |
+| [v25.4 changelog for Cloud](/changelogs/25.4)                       | Fast release changelog for v25.4  |
+| [v24.12 changelog for Cloud](/changelogs/24.12)                     | Fast release changelog for v24.12 |
+| [v24.10 changelog for Cloud](/changelogs/24.10)                     | Fast release changelog for v24.10 |
+| [v24.8 changelog for Cloud](/changelogs/24.8)                       | Fast release changelog for v24.8  |
+| [v24.6 changelog for Cloud](/changelogs/24.6)                       | Fast release changelog for v24.6  |
+| [v24.5 changelog for Cloud](/changelogs/24.5)                       | Fast release changelog for v24.5  |
+| [v24.2 changelog for Cloud](/whats-new/changelog/24.2-fast-release) | Fast release changelog for v24.2  |
 <!--AUTOGENERATED_END-->