Raúl MarínandClaude Opus 4.8 f6f6a6ff3b Keep readonly-pinned settings from failing under client-side compatibility
A native-protocol client resolves `compatibility` on its own side and then
transmits every reverted setting as an explicit change. For a setting a profile
pins with a `readonly` (CONST) constraint this failed the whole query with
SETTING_CONSTRAINT_VIOLATION, even though the server keeps the pinned value
regardless. The HTTP interface, which resolves `compatibility` server-side, was
never affected.

When a settings batch contains `compatibility`, reproduce the values it derives
and drop a change to a CONST-pinned setting when it merely carries that derived
value. A value differing from the derived one is a genuine override attempt of a
read-only setting and still fails, so the lockdown guarantee is preserved.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
2026-07-20 19:45:18 +02:00
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Website Apache 2.0 License

The ClickHouse company logo.

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time.

How To Install (Linux, macOS, FreeBSD)

curl https://clickhouse.com/ | sh
  • Official website has a quick high-level overview of ClickHouse on the main page.
  • ClickHouse Cloud ClickHouse as a service, built by the creators and maintainers.
  • Tutorial shows how to set up and query a small ClickHouse cluster.
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  • YouTube channel has a lot of content about ClickHouse in video format.
  • ClickHouse Theater contains presentations and videos about ClickHouse.
  • Slack and Telegram allow chatting with ClickHouse users in real-time.
  • Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
  • Bluesky and X for short news.
  • Code Browser (github.dev) with syntax highlighting, powered by github.dev.
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Join us for the ClickHouse 26.5 Release Call on May 21, 2026.

Watch all release presentations and videos at ClickHouse Theater and YouTube Playlist.

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Keep an eye out for upcoming meetups and events around the world. Want to speak? Apply here You can also peruse ClickHouse Events for a list of all upcoming trainings, meetups, speaking engagements, etc.

Upcoming meetups

Recent meetups

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ClickHouse is a nice DBMS, and it's a good place to work.

Check out our current openings here: https://clickhouse.com/company/careers

Email: [email protected]!

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