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ClickHouse

76 indexed repositories · View on GitHub

ClickHouse
ClickHouse® is a real-time analytics database management system

C++ · 49890 stars
clickhouse-go
Golang driver for ClickHouse

Go · 3343 stars
clickhouse-java
ClickHouse Java Clients & JDBC Driver

Java · 1617 stars
ClickBench
ClickBench: a Benchmark For Analytical Databases

Shell · 1106 stars
mcp-clickhouse
Connect ClickHouse to your AI assistants.

Python · 871 stars
clickhouse-rs
Official pure Rust typed client for ClickHouse DB

Rust · 559 stars
agent-skills
The official Agent Skills for ClickHouse and ClickHouse Cloud

TypeScript · 535 stars
clickhouse-connect
Python driver/sqlalchemy/superset connectors

Python · 521 stars
adsb.exposed
Interactive visualization and analytics on ADS-B data with ClickHouse

JavaScript · 459 stars
ch-go
Low-level Go Client for ClickHouse

Go · 428 stars
clickhouse-cpp
C++ client library for ClickHouse

C · 382 stars
dbt-clickhouse
The Clickhouse plugin for dbt (data build tool)

Python · 362 stars
clickhouse-js
Official JS client for ClickHouse DB

TypeScript · 331 stars
silk
Fast stackful fibers with a NUMA-aware work-stealing scheduler

C++ · 325 stars
NoiSQL
NoiSQL — Generating Music With SQL Queries

SQL · 293 stars
clickhouse-operator
Official Kubernetes Operator for ClickHouse®

Go · 292 stars
clickhouse-odbc
ODBC driver for ClickHouse

C · 285 stars
pg_clickhouse
Interfaces to query ClickHouse databases from PostgreSQL

C · 283 stars
graphouse
Graphouse allows you to use ClickHouse as a Graphite storage.

Java · 261 stars
spark-clickhouse-connector
Spark ClickHouse Connector build on DataSourceV2 API

Scala · 217 stars
56 more repositories live on View on GitHub

Open All

6547 open issues indexed

Distributed DDL queries fail when interserver_http_host doesn't match `hostname` command Open

comp-ddl external

ClickHouse/ClickHouse#2154 · 6 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
[Feature] Create Nested() data structures in views and SELECT queries Open

comp-data-types external feature

ClickHouse/ClickHouse#2175 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Clickhouse get lost when multiple CH instances are running on the same host Open

comp-distributed enhancement help wanted minor

ClickHouse/ClickHouse#2434 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
DEFAULT values not applicable on Nested fields (Syntax Error) Open

comp-sql-syntax external feature

ClickHouse/ClickHouse#2797 · 6 comments · 14 reactions · 0 assignees · Indexed Sep 15, 2026
FR: Enhance the alter view Open

comp-view external feature

ClickHouse/ClickHouse#2805 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
clickhouse-server in daemon mode is too silent Open

comp-logging external usability

ClickHouse/ClickHouse#3610 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Proposal: arrayLeftJoin Open

comp-functions external feature

ClickHouse/ClickHouse#3954 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Add support for Apache Pulsar as a table engine Open

comp-message-queues external feature

ClickHouse/ClickHouse#4226 · 7 comments · 39 reactions · 0 assignees · Indexed Sep 15, 2026
Feature: flexible merging of rows via SQL query Open

comp-mergetree feature

ClickHouse/ClickHouse#4419 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Consider Adding Codec to work with Hex Strings Open

comp-codecs external feature

ClickHouse/ClickHouse#4420 · 3 comments · 10 reactions · 0 assignees · Indexed Sep 15, 2026
Query receive timeout always uses default setting Open

comp-cli external usability

ClickHouse/ClickHouse#4831 · 2 comments · 6 reactions · 0 assignees · Indexed Sep 15, 2026
Do not store zero columns in parts at all. Open

comp-mergetree performance

ClickHouse/ClickHouse#4968 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Protection from inconsistent ZooKeeper clusters. Open

comp-keeper operations usability warmup task

ClickHouse/ClickHouse#5161 · 2 comments · 1 reaction · 1 assignee · Indexed Sep 15, 2026
Usability issue with custom partitions and wrong ATTACH query. Open

comp-mergetree usability

ClickHouse/ClickHouse#5163 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Log message for 'Connection reset by peer' could be improved Open

comp-protocols external usability

ClickHouse/ClickHouse#5183 · 12 comments · 7 reactions · 0 assignees · Indexed Sep 15, 2026
Query optimization for GROUP BY with ORDER BY keys and LIMIT. Open

comp-query-optimizer feature performance

ClickHouse/ClickHouse#5329 · 12 comments · 12 reactions · 0 assignees · Indexed Sep 15, 2026
Excessive connections when using foreign tables. Open

comp-foreign-db performance

ClickHouse/ClickHouse#5336 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Connection pools for table functions: remote, mysql, url, odbc. Open

comp-protocols feature performance

ClickHouse/ClickHouse#5508 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
INSERT AND SELECT query (RFC) Open

comp-query-execution feature minor st-discussion warmup task

ClickHouse/ClickHouse#5912 · 9 comments · 19 reactions · 0 assignees · Indexed Sep 15, 2026
Avoid overflow in aggregate function "uniq" Open

bug comp-aggregate-functions

ClickHouse/ClickHouse#6078 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Misleading 'Timeout exceeded' for OPTIMIZE TABLE Open

comp-cli enhancement external usability

ClickHouse/ClickHouse#6093 · 22 comments · 5 reactions · 0 assignees · Indexed Sep 15, 2026
No parser error on wrong CREATE TABLE ... AS table Open

comp-sql-syntax external minor usability

ClickHouse/ClickHouse#6154 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
sas7bdat format support to read SAS datasets Open

comp-formats external feature warmup task

ClickHouse/ClickHouse#6184 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
INTERVAL in milliseconds/float value for seconds Open

comp-datetime external feature

ClickHouse/ClickHouse#6216 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
reduce zookeeper znode number by compacting znodes to less batch znodes Open

comp-keeper comp-replication external feature

ClickHouse/ClickHouse#6267 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
prefer_localhost_replica usability Open

comp-distributed development external usability

ClickHouse/ClickHouse#6349 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Detect UTF-16 BOM in CSV/TSV/JSONEachRow input and process it accordingly. Open

easy task feature minor

ClickHouse/ClickHouse#6476 · 10 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Add `removeGarbageParametersFromURL` function Open

comp-regular-function feature minor warmup task

ClickHouse/ClickHouse#6498 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Type mismatch in IN or VALUES section – provide column names Open

comp-query-execution external feature usability

ClickHouse/ClickHouse#6557 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Resample aggregation functions give inconsistent results for floting point data Open

comp-aggregate-functions external feature

ClickHouse/ClickHouse#6741 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
verbose mode partition commands with wrong partition identifier Open

comp-mergetree easy task external feature help wanted operations usability

ClickHouse/ClickHouse#6743 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
affected_rows in system.mutations Open

comp-mutations external feature usability

ClickHouse/ClickHouse#6794 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Row level security performance problems Open

comp-rbac external performance

ClickHouse/ClickHouse#6800 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add function to check if an IPv4/6 is in a list of subnets Open

comp-regular-function external feature help wanted

ClickHouse/ClickHouse#6808 · 4 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Implement Rate Limiting on OPTIMIZE operation Open

comp-scheduler external feature performance

ClickHouse/ClickHouse#6879 · 23 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CLEAR COLUMN query should be allowed for the last columns of primary key. Open

comp-mutations feature warmup task

ClickHouse/ClickHouse#6913 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
PR: apply new order by expression to new parts Open

comp-mergetree external feature

ClickHouse/ClickHouse#7052 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Usability improvements for secondary indices. Open

comp-skip-index easy task usability

ClickHouse/ClickHouse#7081 · 4 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
Negation for sequenceMatch/sequenceCount Open

comp-aggregate-functions easy task external feature st-accepted

ClickHouse/ClickHouse#7094 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Return modified rows Open

comp-sql-syntax external feature

ClickHouse/ClickHouse#7206 · 1 comment · 9 reactions · 0 assignees · Indexed Sep 15, 2026
readonly settings constraint from default profile can't be changed in other profiles Open

comp-rbac enhancement external

ClickHouse/ClickHouse#7275 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
rand() function inconsistent with other databases Open

comp-regular-function external feature minor sql-compatibility

ClickHouse/ClickHouse#7324 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can't create a materialized column on a nested column using syntax sugar Open

comp-mutations external usability

ClickHouse/ClickHouse#7677 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
About with expression and with fill expression Open

comp-query-execution external feature

ClickHouse/ClickHouse#7752 · 6 comments · 7 reactions · 0 assignees · Indexed Sep 15, 2026
INSERT INTO table with default value results in hard-to-understand error message Open

comp-formats external usability

ClickHouse/ClickHouse#7882 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ASOF for engine=Join Open

comp-joins external feature

ClickHouse/ClickHouse#7905 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
startsWith() with multiple values, or can substring be made to use the PK index? Open

comp-mergetree external feature

ClickHouse/ClickHouse#7934 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
system.tables initialization_order field Open

comp-system-table external feature operations

ClickHouse/ClickHouse#7944 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Ability to Cache URL tables Open

comp-table-functions external feature

ClickHouse/ClickHouse#8078 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CREATE MV ON CLUSTER trying to find source tables in default database Open

comp-ddl external feature

ClickHouse/ClickHouse#8445 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

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