id stringlengths 36 36 | document stringlengths 3 3k | metadata stringlengths 23 69 | embeddings listlengths 384 384 |
|---|---|---|---|
33187c74-0139-4ad7-8529-973ae72ec669 | Fixes and improvements for Iceberg storage
#55695
(
Kruglov Pavel
).
Fix data race in CreatingSetsTransform (v2)
#55786
(
Azat Khuzhin
).
Throw exception when parsing illegal string as float if precise_float_parsing is true
#55861
(
李扬
).
Disable predicate pushdown if the CTE contains stateful functions
#5... | {"source_file": "2023.md"} | [
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4c6f8d07-e979-4a7d-b536-28b0d03c64f8 | New Feature {#new-feature-3}
Improve schema inference from JSON formats: 1) Now it's possible to infer named Tuples from JSON objects without experimental JSON type under a setting
input_format_json_try_infer_named_tuples_from_objects
in JSON formats. Previously without experimental type JSON we could only infer ... | {"source_file": "2023.md"} | [
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... |
622ece07-0722-467d-bc5d-e495709cc4d6 | Added
GCD
a.k.a. "greatest common denominator" as a new data compression codec. The codec computes the GCD of all column values, and then divides each value by the GCD. The GCD codec is a data preparation codec (similar to Delta and DoubleDelta) and cannot be used stand-alone. It works with data integer, decimal and ... | {"source_file": "2023.md"} | [
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f5fad127-0378-4efd-873b-2664f6729d4b | Performance Improvement {#performance-improvement-3}
Speed up reading from S3 by enabling prefetches by default.
#53709
(
Alexey Milovidov
).
Do not implicitly read PK and version columns in lonely parts if unnecessary for queries with FINAL.
#53919
(
Duc Canh Le
).
Optimize group by constant keys. Will opt... | {"source_file": "2023.md"} | [
-0.02819589525461197,
0.015479478053748608,
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-... |
302bfd7e-e430-4ebe-8be3-f8571c206bc8 | Replace the linear search in
MergeTreeRangeReader::Stream::ceilRowsToCompleteGranules
with a binary search.
#54869
(
usurai
).
Experimental Feature {#experimental-feature}
The creation of
Annoy
indexes can now be parallelized using setting
max_threads_for_annoy_index_creation
.
#54047
(
Robert Schulze
... | {"source_file": "2023.md"} | [
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fe15437d-77a9-4700-b8cc-620f9af0b3f4 | Add
elapsed_ns
field to HTTP headers X-ClickHouse-Progress and X-ClickHouse-Summary.
#54179
(
joelynch
).
Implementation of
reconfig
(https://github.com/ClickHouse/ClickHouse/pull/49450),
sync
, and
exists
commands for keeper-client.
#54201
(
pufit
).
clickhouse-local
and
clickhouse-client
now allow t... | {"source_file": "2023.md"} | [
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ba85fecc-cb4c-4e98-8a3d-240469d060e7 | Made the views in schema
information_schema
more compatible with the equivalent views in MySQL (i.e. modified and extended them) up to a point where Tableau Online is able to connect to ClickHouse. More specifically: 1. The type of field
information_schema.tables.table_type
changed from Enum8 to String. 2. Added fi... | {"source_file": "2023.md"} | [
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bfc0e8cf-3cab-42c8-b5ae-a3331f29b031 | Regenerated tld data for lookups (
tldLookup.generated.cpp
).
#54269
(
Bharat Nallan
).
Remove the redundant
clickhouse-keeper-client
symlink.
#54587
(
Tomas Barton
).
Use
/usr/bin/env
to resolve bash - now it supports Nix OS.
#54603
(
Fionera
).
CMake added
PROFILE_CPU
option needed to perform
perf ... | {"source_file": "2023.md"} | [
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c733d13e-5f62-4860-8a49-cbef8c7e0527 | Fixed error that prevented insertion in replicated materialized view of new data in presence of duplicated data.
#54184
(
Pedro Riera
).
Fix: allow
IPv6
for bloom filter
#54200
(
Yakov Olkhovskiy
).
fix possible type mismatch with
IPv4
#54212
(
Bharat Nallan
).
Fix
system.data_skipping_indices
for rec... | {"source_file": "2023.md"} | [
-0.06319937855005264,
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0.035333000123500824,
-... |
5c5cabf1-616a-4327-b87a-fc2a1f3c8747 | Fix Keeper segfault during shutdown
#54841
(
Antonio Andelic
).
Fix
Invalid number of rows in Chunk
in MaterializedPostgreSQL
#54844
(
Kseniia Sumarokova
).
Move obsolete format settings to separate section
#54855
(
Kruglov Pavel
).
Rebuild
minmax_count_projection
when partition key gets modified
#5494... | {"source_file": "2023.md"} | [
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-... |
9c52edc9-a1f3-4b23-b6ca-9a9168b8ebed | Added table function
azureBlobStorageCluster
. The supported set of features is very similar to table function
s3Cluster
.
#50795
(
SmitaRKulkarni
).
Allow using
cluster
,
clusterAllReplicas
,
remote
, and
remoteSecure
without table name in issue
#50808
.
#50848
(
Yangkuan Liu
).
A system table to monit... | {"source_file": "2023.md"} | [
-0.010766346007585526,
-0.029951391741633415,
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0.0... |
a3e25a06-ce7d-45b9-bea4-ec11c1d2f523 | Add column
name
to
system.clusters
as an alias to cluster.
#53605
(
irenjj
).
The advanced dashboard now allows mass editing (save/load).
#53608
(
Alexey Milovidov
).
The advanced dashboard now has an option to maximize charts and move them around.
#53622
(
Alexey Milovidov
).
Added support for adding a... | {"source_file": "2023.md"} | [
-0.017006132751703262,
-0.07060721516609192,
-0.16070705652236938,
-0.02090112492442131,
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8ca1b979-e4b3-4ef9-af0f-12bd22d056c0 | Join
table engine: do not clone hash join data structure with all columns.
#53046
(
Duc Canh Le
).
Implement native
ORC
input format without the "apache arrow" library to improve performance.
#53324
(
李扬
).
The dashboard will tell the server to compress the data, which is useful for large time frames over sl... | {"source_file": "2023.md"} | [
-0.04302655905485153,
0.010999927297234535,
-0.09998020529747009,
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0.07363829016685486,
-0... |
f4348c08-3936-42b4-976a-c8b834217337 | There were too many worthless error logs after session expiration, which we didn't like.
#50171
(
helifu
).
Introduce fallback ZooKeeper sessions which are time-bound. Fixed
index
column in system.zookeeper_connection for DNS addresses.
#50424
(
Anton Kozlov
).
Add ability to log when max_partitions_per_inser... | {"source_file": "2023.md"} | [
0.012029345147311687,
-0.04423907399177551,
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0.0505... |
28f6305e-63d5-419c-ba50-7ed897f0cf6d | Add support of predefined macro (
{database}
and
{table}
) in some Kafka engine settings: topic, consumer, client_id, etc.
#52386
(
Yury Bogomolov
).
Disable updating the filesystem cache during backup/restore. Filesystem cache must not be updated during backup/restore, it seems it just slows down the process wit... | {"source_file": "2023.md"} | [
-0.04121618717908859,
-0.08321139961481094,
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-... |
1b7caa74-7e1a-4f23-9cf4-7b4a9a7ce930 | Use the same default paths for
clickhouse-keeper
(symlink) as for
clickhouse-keeper
(executable).
#52861
(
Vitaly Baranov
).
Improve error message for table function
remote
. Closes
#40220
.
#52959
(
jiyoungyoooo
).
Added the possibility to specify custom storage policy in the
SETTINGS
clause of
RESTOR... | {"source_file": "2023.md"} | [
-0.0533636175096035,
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16f23b5d-6430-4dd8-ae8b-d3bd04a2147a | The ClickHouse server now respects memory limits changed via cgroups when reloading its configuration.
#53455
(
Robert Schulze
).
Add ability to turn off flush of Distributed tables on
DETACH
,
DROP
, or server shutdown.
#53501
(
Azat Khuzhin
).
The
domainRFC
function now supports IPv6 in square brackets.
... | {"source_file": "2023.md"} | [
0.005486669484525919,
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-0.0... |
61a5163f-a741-4752-9331-8c9ad11a0b30 | Upgrade PRQL to 0.9.3.
#53060
(
Maximilian Roos
).
System tables from CI checks are exported to ClickHouse Cloud.
#53086
(
Alexey Milovidov
).
The compiler's profile data (
-ftime-trace
) is uploaded to ClickHouse Cloud.
#53100
(
Alexey Milovidov
).
Speed up Debug and Tidy builds.
#53178
(
Alexey Milovido... | {"source_file": "2023.md"} | [
-0.07000135630369186,
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-0... |
8751e61f-ce5a-44da-b89f-517829ddc23d | Load suggestion only with
clickhouse
dialect
#52628
(
János Benjamin Antal
).
Init and destroy ares channel on demand.
#52634
(
Arthur Passos
).
Fix filtering by virtual columns with OR expression
#52653
(
Azat Khuzhin
).
Fix crash in function
tuple
with one sparse column argument
#52659
(
Anton Popov... | {"source_file": "2023.md"} | [
-0.03690086305141449,
-0.022570092231035233,
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-0... |
6728584f-83d1-4be8-aede-0fbabce9e982 | Fix
Context has expired
error properly
#53433
(
Michael Kolupaev
).
Fix
timeout_overflow_mode
when having subquery in the rhs of IN
#53439
(
Duc Canh Le
).
Fix an unexpected behavior in
#53152
#53440
(
Zhiguo Zhou
).
Fix JSON_QUERY Function parse error while path is all number
#53470
(
KevinyhZou
).... | {"source_file": "2023.md"} | [
-0.08853794634342194,
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-... |
0d0924ba-87e0-4d07-a617-64a8f69eed0c | Fixing a typo in the
system.parts
column name
last_removal_attemp_time
. Now it is named
last_removal_attempt_time
.
#52104
(
filimonov
).
Bump version of the distributed_ddl_entry_format_version to 5 by default (enables opentelemetry and initial_query_idd pass through). This will not allow to process existing ... | {"source_file": "2023.md"} | [
-0.06176372244954109,
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1c7600a1-6e0c-4258-8763-dd3de6ba5b91 | Add
input_format_csv_allow_variable_number_of_columns
options.
#51273
(
Dmitry Kardymon
).
Another boring feature: add function
substring_index
, as in Spark or MySQL.
#51472
(
李扬
).
A system table
jemalloc_bins
to show stats for jemalloc bins. Example
SELECT *, size * (nmalloc - ndalloc) AS allocated_byt... | {"source_file": "2023.md"} | [
0.07689794152975082,
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-0.030394... |
96cd5ee0-6b6e-411a-bd22-a2b7c3edc078 | Aliases
current_database
and a new function
current_schemas
for compatibility with PostgreSQL.
#51076
(
Pedro Riera
).
Add alias for functions
today
(now available under the
curdate
/
current_date
names) and
now
(
current_timestamp
).
#52106
(
Lloyd-Pottiger
).
Support
async_deduplication_token
for ... | {"source_file": "2023.md"} | [
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... |
e5e76d16-2596-4843-b85b-f3cb367ac7eb | Reduce the number of syscalls in
FileCache::loadMetadata
- this speeds up server startup if the filesystem cache is configured.
#52435
(
Raúl Marín
).
Allow to have strict lower boundary for file segment size by downloading remaining data in the background. Minimum size of file segment (if actual file size is big... | {"source_file": "2023.md"} | [
0.03536282479763031,
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17c09c2b-879d-4cb2-ade3-c45e4e015ca3 | Add ability to disable native copy for S3 (setting for BACKUP/RESTORE
allow_s3_native_copy
, and
s3_allow_native_copy
for
s3
/
s3_plain
disks).
#51448
(
Azat Khuzhin
).
Add column
primary_key_size
to
system.parts
table to show compressed primary key size on disk. Closes
#51400
.
#51496
(
Yarik Briukhove... | {"source_file": "2023.md"} | [
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0.05077454447746277,
0.026452647522091866,
-0.011213407851755619,
0.05854096636176109,
-0.... |
65827665-9429-4e4c-8d01-fe946b3eb5bc | Avro input format now supports Union even if it contains only a single type. Closes
#52131
.
#52137
(
flynn
).
Add setting
optimize_use_implicit_projections
to disable implicit projections (currently only
min_max_count
projection).
#52152
(
Amos Bird
).
It was possible to use the function
hasToken
for in... | {"source_file": "2023.md"} | [
-0.012280815280973911,
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... |
527802d7-56de-42de-b402-e8241a6d3d14 | The
session_timezone
setting (new in version 23.6) is demoted to experimental.
#52445
(
Alexey Milovidov
).
Support ZooKeeper
reconfig
command for ClickHouse Keeper with incremental reconfiguration which can be enabled via
keeper_server.enable_reconfiguration
setting. Support adding servers, removing servers,... | {"source_file": "2023.md"} | [
-0.04353199154138565,
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0.0... |
e1c2710c-bd90-4d0b-a8c7-80f7b2184316 | Fix inserts into MongoDB tables
#51876
(
Nikolay Degterinsky
).
Fix deadlock on DatabaseCatalog shutdown
#51908
(
Alexander Tokmakov
).
Fix error in subquery operators
#51922
(
Alexey Milovidov
).
Fix async connect to hosts with multiple ips
#51934
(
Kruglov Pavel
).
Do not remove inputs after ActionsDA... | {"source_file": "2023.md"} | [
-0.01651257462799549,
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... |
82515abc-211d-4c63-85a0-ca2a3e50d30b | Remove ALTER support for experimental LIVE VIEW.
#51287
(
Alexey Milovidov
).
Decrease the default values for
http_max_field_value_size
and
http_max_field_name_size
to 128 KiB.
#51163
(
Mikhail f. Shiryaev
).
CGroups metrics related to CPU are replaced with one metric,
CGroupMaxCPU
for better usability. T... | {"source_file": "2023.md"} | [
-0.05422383174300194,
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... |
7865d3db-ec1d-4e00-b0e1-853120dbb742 | Rewrite CapnProto input/output format to improve its performance. Map column names and CapnProto fields case insensitive, fix reading/writing of nested structure fields.
#49752
(
Kruglov Pavel
).
Optimize parquet write performance for parallel threads.
#50102
(
Hongbin Ma
).
Disable
parallelize_output_from_sto... | {"source_file": "2023.md"} | [
-0.030660809949040413,
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0.0... |
3bfe5d60-4073-426f-9139-47e2289a2298 | Support CSV with whitespace or
\t
field delimiters, and these delimiters are supported in Spark.
#50712
(
KevinyhZou
).
Settings
number_of_mutations_to_delay
and
number_of_mutations_to_throw
are enabled by default now with values 500 and 1000 respectively.
#50726
(
Anton Popov
).
The dashboard correctly s... | {"source_file": "2023.md"} | [
-0.009142322465777397,
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-0... |
1889786f-71f1-4dfe-b534-96c9ec1bab76 | Report loading status for executable dictionaries correctly
#48775
(
Anton Kozlov
).
Proper mutation of skip indices and projections
#50104
(
Amos Bird
).
Cleanup moving parts
#50489
(
vdimir
).
Fix backward compatibility for IP types hashing in aggregate functions
#50551
(
Yakov Olkhovskiy
).
Fix Log f... | {"source_file": "2023.md"} | [
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... |
0efe0497-e025-47c4-b227-2cb54c26e42a | Remove garbage from function
transform
#51350
(
Alexey Milovidov
).
ClickHouse release 23.5, 2023-06-08 {#235}
Upgrade Notes {#upgrade-notes}
Compress marks and primary key by default. It significantly reduces the cold query time. Upgrade notes: the support for compressed marks and primary key has been a... | {"source_file": "2023.md"} | [
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-... |
aaf2b3e1-92b5-4514-88a4-da14971189f4 | New Feature {#new-feature-7}
Added storage engine AzureBlobStorage and azureBlobStorage table function. The supported set of features is very similar to storage/table function S3 [#50604] (https://github.com/ClickHouse/ClickHouse/pull/50604) (
alesapin
) (
SmitaRKulkarni
.
Added native ClickHouse Keeper CLI Clien... | {"source_file": "2023.md"} | [
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0.01... |
9ab0f762-c1a7-435b-808b-0697dcd86148 | Function
dotProduct
work for array.
#49050
(
FFFFFFFHHHHHHH
).
Support statement
SHOW INDEX
to improve compatibility with MySQL.
#49158
(
Robert Schulze
).
Add virtual column
_file
and
_path
support to table function
url
. - Improve error message for table function
url
. - resolves
#49231
- resolves... | {"source_file": "2023.md"} | [
-0.02332340180873871,
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bcfd45d3-74ec-4c70-8e72-567f865962b3 | New setting s3_max_inflight_parts_for_one_file sets the limit of concurrently loaded parts with multipart upload request in scope of one file.
#49961
(
Sema Checherinda
).
When reading from multiple files reduce parallel parsing threads for each file. Resolves
#42192
.
#46661
(
SmitaRKulkarni
).
Use aggregate ... | {"source_file": "2023.md"} | [
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-... |
f1ba3215-93d0-42ac-b67e-c54f7d9025ec | Keeper improvement: add
CheckNotExists
request to Keeper, which allows to improve the performance of Replicated tables.
#48897
(
Antonio Andelic
).
Keeper performance improvements: avoid serializing same request twice while processing. Cache deserialization results of large requests. Controlled by new coordinatio... | {"source_file": "2023.md"} | [
-0.04810786992311478,
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-0.008... |
ea4344bf-e2b6-4731-8b52-30afd0f4fd9f | Added possibility to use temporary tables in FROM part of ATTACH PARTITION FROM and REPLACE PARTITION FROM.
#49436
(
Roman Vasin
).
Added setting
async_insert
for
MergeTree
tables. It has the same meaning as query-level setting
async_insert
and enables asynchronous inserts for specific table. Note: it doesn't... | {"source_file": "2023.md"} | [
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-0.065... |
8807e93e-93d6-42ac-9e11-8d2f130b8d98 | Catch exception from
create_directories
in filesystem cache.
#49203
(
Kseniia Sumarokova
).
Copies embedded examples to a new field
example
in
system.functions
to supplement the field
description
.
#49222
(
Dan Roscigno
).
Enable connection options for the MongoDB dictionary. Example:
xml <source> <mong... | {"source_file": "2023.md"} | [
-0.03951426222920418,
0.03183109685778618,
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-0.02418... |
48826678-0b52-4d6f-b344-ccc7b450fa36 | Function "makeDate" now provides a MySQL-compatible overload (year & day of the year argument).
#49603
(
Robert Schulze
).
Support
dictionary
table function for
RegExpTreeDictionary
.
#49666
(
Han Fei
).
Added weighted fair IO scheduling policy. Added dynamic resource manager, which allows IO scheduling hier... | {"source_file": "2023.md"} | [
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... |
b18c33a2-c0e3-4349-a4c5-b2ce193e64a0 | Fingerprints to be used instead of key IDs in encrypted disks. This simplifies the configuration of encrypted disks.
#49882
(
Vitaly Baranov
).
Add UUID data type to PostgreSQL. Closes
#49739
.
#49894
(
Nikolay Degterinsky
).
Function
toUnixTimestamp
now accepts
Date
and
Date32
arguments.
#49989
(
Vict... | {"source_file": "2023.md"} | [
-0.021010419353842735,
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-0... |
07ea81aa-04f9-4c62-b852-3dc5f9e28f70 | Io_uring is not supported on macos, don't choose it when running tests on local to avoid occasional failures.
#49250
(
Frank Chen
).
Support named fault injection for testing.
#49361
(
Han Fei
).
Allow running ClickHouse in the OS where the
prctl
(process control) syscall is not available, such as AWS Lambda.... | {"source_file": "2023.md"} | [
-0.07074785232543945,
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... |
8b35066a-79a5-4d9c-9afe-bfd34f0b4c31 | Fix reinterpretAs*() on big endian machines
#49198
(
Suzy Wang
).
(Experimental zero-copy replication) Lock zero copy parts more atomically
#49211
(
alesapin
).
Fix race on Outdated parts loading
#49223
(
Alexander Tokmakov
).
Fix all key value is null and group use rollup return wrong answer
#49282
(
Shu... | {"source_file": "2023.md"} | [
-0.07960003614425659,
0.0030326303094625473,
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-0... |
92cf29fe-0842-46ab-88e0-5892004faeb9 | Fix processing pending batch for Distributed async INSERT after restart
#49884
(
Azat Khuzhin
).
Fix assertion in CacheMetadata::doCleanup
#49914
(
Kseniia Sumarokova
).
fix
is_prefix
in OptimizeRegularExpression
#49919
(
Han Fei
).
Fix metrics
WriteBufferFromS3Bytes
,
WriteBufferFromS3Microseconds
and... | {"source_file": "2023.md"} | [
-0.052500851452350616,
-0.048292141407728195,
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-0.032354194670915604,
... |
75def8c6-9722-4a03-aeaa-d6e9e5413366 | Fix Keeper deadlock on exception when preprocessing requests.
#50387
(
frinkr
).
Fix hashing of const integer values
#50421
(
Robert Schulze
).
Fix merge_tree_min_rows_for_seek/merge_tree_min_bytes_for_seek for data skipping indexes
#50432
(
Azat Khuzhin
).
Limit the number of in-flight tasks for loading ou... | {"source_file": "2023.md"} | [
-0.025860536843538284,
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0... |
7fbe7567-2e6a-421f-a286-a2893bd6dd4a | Add statistical aggregate function
kolmogorovSmirnovTest
. Close
#48228
.
#48325
(
FFFFFFFHHHHHHH
).
Added a
lost_part_count
column to the
system.replicas
table. The column value shows the total number of lost parts in the corresponding table. Value is stored in zookeeper and can be used instead of not persis... | {"source_file": "2023.md"} | [
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-0.0... |
42b27aa7-c2ac-4931-bf84-a95e8d682c4c | Only check dependencies if necessary when applying
ALTER TABLE
queries.
#48062
(
Raúl Marín
).
Optimize function
mapUpdate
.
#48118
(
Anton Popov
).
Now an internal query to local replica is sent explicitly and data from it received through loopback interface. Setting
prefer_localhost_replica
is not respec... | {"source_file": "2023.md"} | [
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-0.0090036541223526,
0.05163116008043289,
-0.07... |
9a88f373-ece8-43ce-9e2e-5c193f553418 | Several improvements around data lakes: - Make
Iceberg
work with non-partitioned data. - Support
Iceberg
format version v2 (previously only v1 was supported) - Support reading partitioned data for
DeltaLake
/
Hudi
- Faster reading of
DeltaLake
metadata by using Delta's checkpoint files - Fixed incorrect
Hudi
... | {"source_file": "2023.md"} | [
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-0... |
c297dcec-bd42-4cb8-b994-a98662dbe96c | Add columns
perform_ttl_move_on_insert
,
load_balancing
for table
system.storage_policies
, modify column
volume_type
type to
Enum8
.
#48167
(
lizhuoyu5
).
Added support for
BACKUP ALL
command which backups all tables and databases, including temporary and system ones.
#48189
(
Vitaly Baranov
).
Functi... | {"source_file": "2023.md"} | [
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-0.... |
0aaa6de5-fbb4-4581-811a-40a97c1b6285 | Override
CLICKHOUSE_USER
and
CLICKHOUSE_PASSWORD
environment variables with
--user
and
--password
client parameters. Closes
#38909
.
#48440
(
Nikolay Degterinsky
).
Added retries to loading of data parts in
MergeTree
tables in case of retryable errors.
#48442
(
Anton Popov
).
Add support for
Date
, ... | {"source_file": "2023.md"} | [
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... |
41eba241-20ae-49ae-a75b-e1a2baa8ccb3 | Correctly set headers for native copy operations on GCS.
#48981
(
Antonio Andelic
).
Add support for specifying setting names in the command line with dashes instead of underscores, for example,
--max-threads
instead of
--max_threads
. Additionally, support Unicode dash characters like
—
instead of
--
- this... | {"source_file": "2023.md"} | [
-0.08502193540334702,
-0.012372812256217003,
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0.01... |
36ce0771-8269-4a88-a99e-1de81cd8f549 | Fix overflow in the
sparkbar
function
#48121
(
Vladimir C
).
Fix race in S3
#48190
(
Anton Popov
).
Disable JIT for aggregate functions due to inconsistent behavior
#48195
(
Alexey Milovidov
).
Fix alter formatting (minor)
#48289
(
Natasha Murashkina
).
Fix CPU usage in RabbitMQ (was worsened in 23.2 ... | {"source_file": "2023.md"} | [
-0.02409588359296322,
-0.07393303513526917,
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... |
25bfafdb-61d2-4203-b322-350dec0b8061 | Fix
UNKNOWN_IDENTIFIER
error while selecting from table with row policy and column with dots
#48976
(
Kruglov Pavel
).
Fix aggregation by empty nullable strings
#48999
(
LiuNeng
).
ClickHouse release 23.3 LTS, 2023-03-30 {#233}
Upgrade Notes {#upgrade-notes-1}
Lightweight DELETEs are production ready... | {"source_file": "2023.md"} | [
-0.062342848628759384,
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-... |
731fb34c-32a5-4be5-baf7-8a11be67899f | Added support of arbitrary tables engines for temporary tables (except for Replicated and KeeperMap engines). Close
#31497
.
#46071
(
Roman Vasin
).
Add support for replication of user-defined SQL functions using centralized storage in Keeper.
#46085
(
Aleksei Filatov
).
Implement
system.server_settings
(sim... | {"source_file": "2023.md"} | [
-0.05916934087872505,
-0.03363236039876938,
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0.10941194742918015,
-0.048... |
0ea86cb7-38fb-4c19-a0b1-415086f5e3dd | Allow control of compression in Parquet/ORC/Arrow output formats, adds support for more compression input formats. This closes
#13541
.
#47114
(
Kruglov Pavel
).
Add SSL User Certificate authentication to the native protocol. Closes
#47077
.
#47596
(
Nikolay Degterinsky
).
Add
OrNull() and
OrZero() variants... | {"source_file": "2023.md"} | [
-0.0919325202703476,
0.048035893589258194,
-0.04634823650121689,
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0.11923814564943314,
-0... |
4548e1d9-fe9c-4218-8941-14bb2bcd455c | Updated
clickhouse-copier
to use
GROUP BY
instead of
DISTINCT
to get the list of partitions. For large tables, this reduced the select time from over 500s to under 1s.
#47386
(
Clayton McClure
).
Fix performance degradation in
ASOF JOIN
.
#47544
(
Ongkong
).
Even more batching in Keeper. Improve performa... | {"source_file": "2023.md"} | [
-0.055695902556180954,
-0.02056843787431717,
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-0.... |
28435e06-4940-4256-99f3-2dd28c86f8ce | Don't report ZK node exists to system.errors when a block was created concurrently by a different replica.
#46820
(
Raúl Marín
).
Increase the limit for opened files in
clickhouse-local
. It will be able to read from
web
tables on servers with a huge number of CPU cores. Do not back off reading from the URL tabl... | {"source_file": "2023.md"} | [
-0.04709930345416069,
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0.10130327194929123,
-0.06713... |
a8d8f9a4-5127-4db4-9278-6a295a027036 | Add support for big int types to the
runningDifference
function. Closes
#47194
.
#47322
(
Nikolay Degterinsky
).
Add an expiration window for S3 credentials that have an expiration time to avoid
ExpiredToken
errors in some edge cases. It can be controlled with
expiration_window_seconds
config, the default is... | {"source_file": "2023.md"} | [
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... |
b9d96aa8-2f8a-4cb1-a99f-51f356c1f56c | ThreadPools metrics introspection.
#47880
(
Azat Khuzhin
).
Add
WriteBufferFromS3Microseconds
and
WriteBufferFromS3RequestsErrors
profile events.
#47885
(
Antonio Andelic
).
Add
--link
and
--noninteractive
(
-y
) options to ClickHouse install. Closes
#47750
.
#47887
(
Nikolay Degterinsky
).
Fixed
... | {"source_file": "2023.md"} | [
-0.0500204861164093,
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0.04711243510246277,
0.01789... |
69aba0b5-429a-45ff-b141-52bddd1f382f | Fix formats parser resetting, test processing bad messages in
Kafka
#45693
(
Kruglov Pavel
).
Fix data size calculation in Keeper
#46086
(
Antonio Andelic
).
Fixed a bug in automatic retries of
DROP TABLE
query with
ReplicatedMergeTree
tables and
Atomic
databases. In rare cases it could lead to
Can't g... | {"source_file": "2023.md"} | [
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0.10311224311590195,
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0.... |
68e747a5-6f74-4bba-976f-4d32b0cbde4d | Forbid insert select for the same
Join
table, as it leads to a deadlock
#47260
(
Vladimir C
).
Skip merged partitions for
min_age_to_force_merge_seconds
merges
#47303
(
Antonio Andelic
).
Modify find_first_symbols, so it works as expected for find_first_not_symbols
#47304
(
Arthur Passos
).
Fix big numb... | {"source_file": "2023.md"} | [
-0.07620347291231155,
0.003199027618393302,
0.018108390271663666,
0.0029988063033670187,
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0.006733998656272888,
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0.008992149494588375,
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0.026925137266516685,
-0... |
5c66da49-b19f-4d76-af3b-5c97e586deac | Correctly set TCP/HTTP socket timeouts in Keeper
#48108
(
Antonio Andelic
).
Fix possible member call on null pointer in
Avro
format
#48184
(
Kruglov Pavel
).
ClickHouse release 23.2, 2023-02-23 {#232}
Backward Incompatible Change {#backward-incompatible-change-8}
Extend function "toDayOfWeek()" (ali... | {"source_file": "2023.md"} | [
-0.029572127386927605,
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0.024495761841535568,
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-0.032528676092624664,
-0.08386170119047165,
0.0... |
5ef2336e-7eaf-4dc7-acee-3435403d2a08 | Add
generateULID
function. Closes
#36536
.
#44662
(
Nikolay Degterinsky
).
Add
corrMatrix
aggregate function, calculating each two columns. In addition, since Aggregatefunctions
covarSamp
and
covarPop
are similar to
corr
, I add
covarSampMatrix
,
covarPopMatrix
by the way. @alexey-milovidov closes
#44... | {"source_file": "2023.md"} | [
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0.01878301426768303,
0.017122427001595497,
-0.... |
35d13d74-8c32-48b6-8560-94162c818808 | An option added to aggregate partitions independently if table partition key and group by key are compatible. Controlled by the setting
allow_aggregate_partitions_independently
. Disabled by default because of limited applicability (please refer to the docs).
#45364
(
Nikita Taranov
).
Allow using Vertical merge a... | {"source_file": "2023.md"} | [
-0.01783517748117447,
-0.0039405678398907185,
-0.056608896702528,
-0.053816720843315125,
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0.060016095638275146,
-0.00244683725759387,
-0.0... |
6f450dd4-bbf9-468b-85e0-109bff8f0b01 | Fix too big memory usage for vertical merges on non-remote disk. Respect
max_insert_delayed_streams_for_parallel_write
for the remote disk.
#46275
(
Nikolai Kochetov
).
Update zstd to v1.5.4. It has some minor improvements in performance and compression ratio. If you run replicas with different versions of ClickH... | {"source_file": "2023.md"} | [
-0.062356021255254745,
-0.01936126872897148,
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0.06763192266225815,
-0.05... |
b9a77019-0945-470e-8e9b-19b64a8c3f9c | Added retries on interserver DNS errors.
#43179
(
Anton Kozlov
).
Keeper improvement: try preallocating space on the disk to avoid undefined out-of-space issues. Introduce setting
max_log_file_size
for the maximum size of Keeper's Raft log files.
#44370
(
Antonio Andelic
).
Optimize behavior for a replica del... | {"source_file": "2023.md"} | [
-0.11948183178901672,
-0.013229619711637497,
-0.021198179572820663,
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0.05679735913872719,
-0... |
2d2e81f6-2596-41f7-91f1-f385b81c3647 | Add support for Map, IPv4 and IPv6 types in generateRandom. Mostly useful for testing.
#45785
(
Raúl Marín
).
Support empty/notEmpty for IP types.
#45799
(
Yakov Olkhovskiy
).
The column
num_processed_files
was split into two columns:
num_files
(for BACKUP) and
files_read
(for RESTORE). The column
proces... | {"source_file": "2023.md"} | [
-0.0583689883351326,
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-0.024980636313557625,
0.07526692003011703,
-0.10042... |
d3797b68-c7db-4073-948d-2975a1741f98 | Add
parts
,
active_parts
and
total_marks
columns to
system.tables
on
issue
.
#46161
(
attack204
).
Functions "multi[Fuzzy]Match(Any|AnyIndex|AllIndices}" now reject regexes which will likely evaluate very slowly in vectorscan.
#46167
(
Robert Schulze
).
When
insert_null_as_default
is enabled and colum... | {"source_file": "2023.md"} | [
0.036754362285137177,
0.007415256928652525,
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0.048418059945106506,
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-0.03909566253423691,
0.143995463848114,
-0.0... |
6d6fb347-b360-463b-b639-189d45b28494 | Add systemd.service file for clickhouse-keeper. Fixes
#44293
.
#45568
(
Mikhail f. Shiryaev
).
ClickHouse's fork of poco was moved from "contrib/" to "base/poco/".
#46075
(
Robert Schulze
).
Add an option for
clickhouse-watchdog
to restart the child process. This does not make a lot of use.
#46312
(
Alexey... | {"source_file": "2023.md"} | [
-0.02974996343255043,
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0... |
e6dc6a89-c109-4f84-bff1-fc2eff88d47c | Should use
select_query_typed.limitByOffset
instead of
select_query_typed.limitOffset
.
#45817
(
刘陶峰
).
When use experimental analyzer, queries like
SELECT number FROM numbers(100) LIMIT 10 OFFSET 10;
get wrong results (empty result for this sql). That is caused by an unnecessary offset step added by planner. ... | {"source_file": "2023.md"} | [
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... |
70aea62c-0f09-4311-b11d-a636ec13d3b8 | Fixed a LOGICAL_ERROR on an attempt to execute
ALTER ... MOVE PART ... TO TABLE
. This type of query was never actually supported.
#46359
(
Alexander Tokmakov
).
Fix s3Cluster schema inference in parallel distributed insert select when
parallel_distributed_insert_select
is enabled.
#46381
(
Kruglov Pavel
).
... | {"source_file": "2023.md"} | [
-0.062015797942876816,
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0.022682590410113335,
-0.013... |
8e48a6cf-702a-4c78-b135-0d658c0ed69d | Use the
GetObjectAttributes
request instead of the
HeadObject
request to get the size of an object in AWS S3. This change fixes handling endpoints without explicit regions after updating the AWS SDK, for example.
#45288
(
Vitaly Baranov
). AWS S3 and Minio are tested, but keep in mind that various S3-compatible s... | {"source_file": "2023.md"} | [
-0.008270910009741783,
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-0.... |
1c765ad2-b48c-4a90-a0e3-5a3c1a192e66 | Record server startup time in ProfileEvents (
ServerStartupMilliseconds
). Resolves
#43188
.
#45250
(
SmitaRKulkarni
).
Refactor and Improve streaming engines Kafka/RabbitMQ/NATS and add support for all formats, also refactor formats a bit: - Fix producing messages in row-based formats with suffixes/prefixes. Now ... | {"source_file": "2023.md"} | [
0.03398171439766884,
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0.075340636074543,
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-0.03493762016296387,
-0.0502963587641716,
-0.0060983... |
3c267090-49b9-4a22-8a28-99f713e80ffb | Performance Improvement {#performance-improvement-11}
Do not load inactive parts at startup of
MergeTree
tables.
#42181
(
Anton Popov
).
Improved latency of reading from storage
S3
and table function
s3
with large numbers of small files. Now settings
remote_filesystem_read_method
and
remote_filesystem_... | {"source_file": "2023.md"} | [
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0.06781376898288727,
0.01716650277376175,
-0.0590... |
2f37f4d0-dbb6-46b0-b2c2-568aaca79dcf | Provide monotonicity info for
toUnixTimestamp64*
to enable more algebraic optimizations for index analysis.
#44116
(
Nikita Taranov
).
Allow the configuration of temporary data for query processing (spilling to disk) to cooperate with the filesystem cache (taking up the space from the cache disk)
#43972
(
Vladi... | {"source_file": "2023.md"} | [
-0.0716911181807518,
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0.07648672163486481,
-0.0... |
18c0532e-b59a-4804-9ee7-a2028f30230d | Better support for
PROXYv1
protocol.
#44135
(
Yakov Olkhovskiy
).
Add information about the latest part check by cleanup threads into
system.parts
table.
#44244
(
Dmitry Novik
).
Disable table functions in readonly mode for inserts.
#44290
(
SmitaRKulkarni
).
Add a setting
simultaneous_parts_removal_li... | {"source_file": "2023.md"} | [
-0.028423519805073738,
-0.0235198512673378,
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0.03338203951716423,
0.033592481166124344,
-0.05... |
72f0337a-9ab4-4fb0-bba0-627258896b40 | Optimize and fix metrics for Distributed async INSERT.
#44922
(
Azat Khuzhin
).
Added settings to disallow concurrent backups and restores resolves
#43891
Implementation: * Added server-level settings to disallow concurrent backups and restores, which are read and set when BackupWorker is created in Context. * Se... | {"source_file": "2023.md"} | [
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0.05863660201430321,
-0.022... |
d97fd9a8-8d96-4f22-8e5a-41342c4ff95b | Bring interval subtraction from datetime in line with addition.
#44241
(
ltrk2
).
Remove limits on the maximum size of the result for view.
#44261
(
lizhuoyu5
).
Fix possible logical error in cache if
do_not_evict_index_and_mrk_files=1
. Closes
#42142
.
#44268
(
Kseniia Sumarokova
).
Fix possible too earl... | {"source_file": "2023.md"} | [
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-0... |
c412f731-bd0f-4b56-b3f0-8c0db7bbfa22 | Validate types in table function arguments, CAST function arguments, JSONAsObject schema inference according to settings.
#44501
(
Kruglov Pavel
).
Fix IN function with LowCardinality and const column, close
#44503
.
#44506
(
Duc Canh Le
).
Fixed a bug in the normalization of a
DEFAULT
expression in
CREATE ... | {"source_file": "2023.md"} | [
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0.0370... |
cc3c70a5-fd3c-431e-9182-80bc8a49d5e8 | Use
max_delay_to_insert
value in case the calculated time to delay INSERT exceeds the setting value. Related to
#44902
.
#44916
(
Igor Nikonov
).
Fix error
Different order of columns in UNION subquery
for queries with
UNION
. Fixes
#44866
.
#44920
(
Nikolai Kochetov
).
Delay for INSERT can be calculated ... | {"source_file": "2023.md"} | [
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631358a5-b543-48d7-b97e-f94049e782f5 | Throw a correct exception when explicit PREWHERE cannot be used with a table using the storage engine
Merge
.
#45319
(
Antonio Andelic
).
Under WSL1 Ubuntu self-extracting ClickHouse fails to decompress due to inconsistency - /proc/self/maps reporting 32bit file's inode, while stat reporting 64bit inode.
#45339
... | {"source_file": "2023.md"} | [
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9c5254ac-c821-4644-b95b-3dd33a4188d0 | slug: /whats-new/changelog/2017
sidebar_position: 10
sidebar_label: '2017'
title: '2017 Changelog'
description: 'Changelog for 2017'
doc_type: 'changelog'
keywords: ['ClickHouse 2017', 'changelog 2017', 'release notes', 'version history', 'early releases']
ClickHouse Release 1.1.54327, 2017-12-21 {#clickhouse-relea... | {"source_file": "2017.md"} | [
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caf3fc1c-384e-485d-838d-85f9498c0614 | Bug Fixes: {#bug-fixes}
Fixed hangups when synchronously inserting into a Distributed table.
Fixed nonatomic adding and removing of parts in Replicated tables.
Data inserted into a materialized view is not subjected to unnecessary deduplication.
Executing a query to a Distributed table for which the local rep... | {"source_file": "2017.md"} | [
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b19c10c5-5c0e-433d-ac4e-05e08177b22c | Bug Fixes: {#bug-fixes-2}
Fixed an error that sometimes produced
part ... intersects previous part
messages and weakened replica consistency.
Fixed an error that caused the server to lock up if ZooKeeper was unavailable during shutdown.
Removed excessive logging when restoring replicas.
Fixed an error in th... | {"source_file": "2017.md"} | [
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... |
26747122-903d-4fb6-8915-7b5d290fcf51 | Fixed the invalid default value for
Enum
s (0 instead of the minimum) when using the
JSONEachRow
and
TSKV
formats.
Resolved the appearance of zombie processes when using a dictionary with an
executable
source.
Fixed segfault for the HEAD query.
Improved Workflow for Developing and Assembling ClickHouse:... | {"source_file": "2017.md"} | [
-0.02376106195151806,
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-0... |
75e36e04-7ce5-4fc7-a081-552df674664e | INSERT can be performed synchronously in a Distributed table: OK is returned only after all the data is saved on all the shards. This is activated by the setting insert_distributed_sync=1.
Added the UUID data type for working with 16-byte identifiers.
Added aliases of CHAR, FLOAT and other types for compatibility w... | {"source_file": "2017.md"} | [
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-0.0... |
8f3e66c7-63d1-458d-a976-20ce2e8f9ca3 | replicated_can_become_leader can prevent a replica from becoming the leader (and assigning merges).
Accelerated cleanup to remove outdated data from ZooKeeper.
Multiple improvements and fixes for clustered DDL queries. Of particular interest is the new setting distributed_ddl_task_timeout, which limits the time... | {"source_file": "2017.md"} | [
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-... |
0341ca09-5f5a-43d2-b633-b7d5bb52b213 | Improved Workflow for Developing and Assembling ClickHouse: {#improved-workflow-for-developing-and-assembling-clickhouse-1}
Builds can be assembled in Arcadia.
You can use gcc 7 to compile ClickHouse.
Parallel builds using ccache+distcc are faster now.
ClickHouse Release 1.1.54245, 2017-07-04 {#clickhouse-r... | {"source_file": "2017.md"} | [
-0.052451908588409424,
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0.01599145494401455,
-0.05... |
be074d72-d7e9-4f29-a302-bf60fbb6bfb1 | sidebar_position: 1
sidebar_label: 'Cloud'
title: 'Cloud Changelog'
slug: /whats-new/changelog/cloud
description: 'Learn about Cloud Changelog'
doc_type: 'changelog'
keywords: ['ClickHouse Cloud', 'cloud changelog', 'cloud updates', 'cloud features', 'cloud releases']
Cloud Changelog
import CloudChangelog from '@... | {"source_file": "cloud.md"} | [
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a6f2441a-e0c4-4ff9-907e-f0cc9c6bd8b6 | description: 'Changelog for 2025'
note: 'This file is generated with yarn build'
slug: /whats-new/changelog/
sidebar_position: 2
sidebar_label: '2025'
title: 'Changelog 2025'
doc_type: 'changelog'
Table of Contents
ClickHouse release v25.10, 2025-10-30
ClickHouse release v25.9, 2025-09-25
ClickHouse release v... | {"source_file": "index.md"} | [
-0.05167573317885399,
-0.020502474159002304,
0.08159834891557693,
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0.046595703810453415,
-0.024985959753394127,
0.00... |
aab00866-8ba2-46ea-900b-a824adb867f0 | Rename setting
query_plan_use_new_logical_join_step
to
query_plan_use_logical_join_step
.
#87679
(
Vladimir Cherkasov
).
The new syntax allows the tokenizer parameter for the text index to be more expressive.
#87997
(
Elmi Ahmadov
).
Renamed functions
searchAny
and
searchAll
to
hasAnyTokens
and
hasAll... | {"source_file": "index.md"} | [
-0.047682952135801315,
0.004753847606480122,
0.0031311162747442722,
0.04056216776371002,
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0.05101935938000679,
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0.035123083740472794,
0.011346378363668919,
0.021367276087403297,
... |
4cc3f572-92a7-43e3-8482-88cd2252ae8a | A new bloom filter index for text,
sparse_gram
.
#79985
(
scanhex12
).
A new
conv
function for converting numbers between bases, currently supports bases from
2-36
.
#83058
(
hp
).
Added
LIMIT BY ALL
syntax support. Similar to
GROUP BY ALL
and
ORDER BY ALL
,
LIMIT BY ALL
automatically expands to use ... | {"source_file": "index.md"} | [
-0.011493191123008728,
0.03882826492190361,
-0.03242892026901245,
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0.05121129751205444,
0.0012619125191122293,
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0.02570078708231449,
-0.021573081612586975,
0.03242127597332001,
-0.... |
76b9b6cb-1b45-492c-8e43-e6c191d05fc7 | Add recursive variants of
cp
-
cpr
and
mv
-
mvr
commands in Keeper client.
#88570
(
Mikhail Artemenko
).
Added session setting to exclude list of skip indexes from materialization on inserts (
exclude_materialize_skip_indexes_on_insert
). Added merge tree table setting to exclude list of skip indexes from mater... | {"source_file": "index.md"} | [
-0.0077828047797083855,
0.05962817370891571,
-0.10177338123321533,
0.019176771864295006,
0.005677555222064257,
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0.01515885628759861,
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0.0004035720485262573,
0.06178998202085495,
0.029269056394696236,
0.08489636331796646,
-0.0... |
6d1d1409-7fd5-46a0-98f5-00fda8bf21f9 | Reduce memory allocation and memory copy when select from an aggregating merge tree table with FINAL when the table has columns with type
SimpleAggregateFunction(anyLast)
.
#84428
(
Duc Canh Le
).
Provides a logic regarding pushing down the disjunction JOIN predicates. Example: in TPC-H Q7 for a condition on 2 tab... | {"source_file": "index.md"} | [
0.03514143452048302,
0.05939090996980667,
0.05440835654735565,
0.010054921731352806,
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0.017707236111164093,
0.03520946204662323,
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0.002425499726086855,
0.011015714146196842,
-0.0374877043068409,
-0.0042776744812726974,
-0.01... |
1e7fb9e7-06a2-47f3-9c28-b5c2c349e05c | Reduce the impact of not using fail points (the default code path when the debugging is not active).
#88196
(
Raúl Marín
).
Avoid full scan for
system.tables
with filter by
uuid
(Can be useful if you have only UUID from logs or zookeeper path).
#88379
(
Azat Khuzhin
).
Improved performance of functions
tok... | {"source_file": "index.md"} | [
-0.021123293787240982,
0.005047395825386047,
-0.06983793526887894,
0.02063225582242012,
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0.03128887712955475,
0.034593500196933746,
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0.02469760738313198,
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-0.042877405881881714,
0.0575178861618042,
-0.0324... |
11081533-2b95-4e6b-b79a-9fd059b72adc | mannWhitneyUTest
no longer throws an exception when both samples contain only identical values. Now returns a valid result, consistent with SciPy. This closes:
#79814
.
#80009
(
DeanNeaht
).
Rewrite disk object storage transaction removes previous remote blobs if metadata transaction is committed.
#81787
(
Sema... | {"source_file": "index.md"} | [
-0.021114297211170197,
0.016192950308322906,
0.026781076565384865,
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0.07790610194206238,
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0.02080671489238739,
0.05061362311244011,
-0.05... |
879505ea-ad41-4b30-8da6-9b96c642a591 | Allow disabling utf8 encoding for ytsaurus table.
#87150
(
MikhailBurdukov
).
Disable
s3_slow_all_threads_after_retryable_error
by default.
#87198
(
Nikita Mikhaylov
).
Rename table function
arrowflight
to
arrowFlight
.
#87249
(
Vitaly Baranov
).
Updated
clickhouse-benchmark
to accept using
-
if in... | {"source_file": "index.md"} | [
0.042392797768116,
-0.09020321816205978,
0.0007368068327195942,
0.013434202410280704,
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0.054784782230854034,
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0.06891050189733505,
0.024521218612790108,
0.008697474375367165,
0.029312776401638985,
-0.07... |
a3d15cd2-37d8-4bc4-9cb9-4c6158b8c2c7 | Fix incorrect handling of settings
max_joined_block_size_rows
and
max_joined_block_size_bytes
during query plan serialization with experimental
make_distributed_plan
.
#87675
(
Vladimir Cherkasov
).
The setting
enable_http_compression
is now the default. This means that if a client accepts HTTP compression, ... | {"source_file": "index.md"} | [
-0.09159263968467712,
0.10539162158966064,
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0.04436519742012024,
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0.08439101278781891,
0.03336188569664955,
-0.007586926... |
d2f1c467-f265-4a31-89e3-77c146862c91 | Added a new profile event to track the number of times that a background merge was rejected due to exceeding memory limits.
#88084
(
Grant Holly
).
Enables the analyzer for CREATE/ALTER TABLE column default expression validation.
#88087
(
Max Justus Spransy
).
Internal query planning improvement: use JoinStepLo... | {"source_file": "index.md"} | [
0.046731047332286835,
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-0.06474205106496811,
0.08726092427968979,
-0.0... |
7be91797-6f6e-4f47-b04d-bcc2b467f131 | Bug Fix (user-visible misbehavior in an official stable release)
Fixed GeoParquet causing client protocol errors.
#84020
(
Michael Kolupaev
).
Fix resolving host-dependent functions like shardNum() in subqueries on initiator node.
#84409
(
Eduard Karacharov
).
Fixed incorrect handling of pre-epoch dates wit... | {"source_file": "index.md"} | [
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0.03206345811486244,
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0.00844013411551714,
-0.024368084967136383,
-0.027976077049970627,
-0.0... |
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