Shipped · Databases

What ClickHouse/ClickHouse shipped

The public repository of Clickhouse · github.com/ClickHouse/ClickHouse

Written by FoxPlug from the repository's own releases; not affiliated with Clickhouse. Paste your own repository in the box below and FoxPlug writes the same weekly update for your product. This page is an automatic summary of the releases, pull requests and commits in github.com/ClickHouse/ClickHouse; Clickhouse did not write it and does not use or endorse FoxPlug. Every line links to the change it describes.

Get a weekly update like this for your product, free

Or Use it as a GitHub Action

Follow ClickHouse's weekly shipped digest

Week of October 5, 2026

What shipped

Why it matters

This week brought fixes for wrong results and for reads that depended on which columns a query touched, covering pointInPolygon, SummingMergeTree FINAL, TTL merges and skip index construction on insert. It also tightened protocol and file reading: Native protocol collections are now bounded, Parquet min and max can come from column chunk statistics, and several Parquet and S3 paths were adjusted. Alongside that came backports of outer JOIN conjunct and Iceberg decimal bound fixes to the 26.8 and 26.9 branches, plus a long list of CI test stabilizations.

Changelog entry

Example posts FoxPlug drafted from these changes. Not written or posted by the project.

Post for X

This week: bounded Native protocol collections, Parquet min/max from column chunk statistics, fixes for pointInPolygon with huge coordinates, SummingMergeTree FINAL zero rows, TTL merges without row TTL info, and skip indexes built from merged insert rows.

Post for LinkedIn

This week in the project: Native protocol collections read from a peer are now bounded, Parquet min and max can be answered from column chunk statistics, and CODEC(T64) works on a bucketed Map. Wrong results were fixed for pointInPolygon with huge coordinates, SELECT FINAL from SummingMergeTree, and TTL merges on parts without row TTL info. Skip indexes are now built from the merged rows when an INSERT merges its block, and several fixes were backported to the 26.8 and 26.9 branches.

Week of September 28, 2026

What shipped

Why it matters

This week brings experimental LATERAL JOIN for advanced SQL patterns, overlay databases for table unions, and FileLog improvements for flexible file reading. Multiple query execution and storage bugs were fixed, including distributed table edge cases and Delta Lake handling.

Changelog entry

Example posts FoxPlug drafted from these changes. Not written or posted by the project.

Post for X

New this week: experimental LATERAL JOIN for correlated subqueries, Overlay databases, FileLog glob patterns and reset command, dialect shortcuts, and vectorized least/greatest/clamp functions. Plus fixes for Distributed tables and Delta Lake.

Post for LinkedIn

ClickHouse updates this week include experimental LATERAL JOIN support for advanced SQL patterns and top-N-per-group queries, new Overlay databases that expose unions of source tables, and FileLog enhancements with glob patterns and reset capability. Performance improvements include vectorized least/greatest/clamp functions (3-5x faster) and dialect switching commands. Bug fixes address Distributed table edge cases, Delta Lake column mapping, and metadata handling.

Week of September 21, 2026

What shipped

Why it matters

This week includes security improvements through seccomp filtering, several performance optimizations for string and array functions, and bug fixes for distributed queries, string handling, and storage operations. These changes address both performance scaling issues and correctness problems across various query types.

Changelog entry

Example posts FoxPlug drafted from these changes. Not written or posted by the project.

Post for X

ClickHouse now applies seccomp filtering at startup for improved containment. This week also brings performance optimizations for substring operations, array searches, and CSV reading, plus fixes for UTF8 case-insensitive search consistency.

Post for LinkedIn

ClickHouse continues improving security and performance. This week's updates include seccomp system call filtering at server startup for enhanced containment, performance optimizations for substring operations and array functions, and important fixes for UTF8-aware string operations and distributed query handling. These changes address both kernel interface containment and query execution consistency.

Week of September 14, 2026

What shipped

Why it matters

This week includes important stability fixes for query analysis, security hardening for cloud storage, and correctness fixes for aggregations and floating-point handling. The removal of legacy query analysis code simplifies the codebase after the analyzer became the default. Several edge-case bugs affecting correlated subqueries, parameterized views, and NaN handling have been resolved.

Changelog entry

Example posts FoxPlug drafted from these changes. Not written or posted by the project.

Post for X

New in ClickHouse: removed legacy query analysis code, fixed Azure range validation, secured HDFS table cache access checks, and resolved query correctness issues with correlated subqueries and NaN handling.

Post for LinkedIn

This week's ClickHouse updates focus on stability and correctness: we completed the transition to the new analyzer by removing legacy query analysis code; fixed a critical security issue in HDFS database table caching that wasn't enforcing read source grants; improved Azure Blob Storage reliability with range offset validation; resolved query correctness bugs affecting correlated subqueries, parameterized views, and floating-point NaN handling; and merged query optimization settings for cleaner configuration.

Weeks with too little public activity are left out rather than filled in. Last updated 2026-10-12.

Is this your repo? Ask us to remove this page.