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ClickHouse query performance report v1.0.0

Use this resource to produce a structured report on slow ClickHouse queries

New

  • 483 downloads
  • 168 likes
  • 187 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install clickhouse-slow-query-report

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent analyses slow queries over the last N days, attributes them to teams and identifies root causes such as unmaterialised JSONExtract, high-cardinality breakdowns or heavy joins. It writes the report in a defined structure, with recommendations grounded in the code.

Mostly picked by

Updated November 2, 2026

Card for the “ClickHouse query performance report” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: what counts as a slow query, method and report structure
  • references/: HogQL deep dive, materialisation analysis and query patterns

Good fit for

  • You must explain a memory or timeout problem to the team
  • You look for materialisation candidates

Not for

    Tags

    • clickhouse
    • report
    • performance
    • queries

    About

    You say

    “Write the ClickHouse performance report for the last seven days, by team.”

    Card for the “ClickHouse query performance report” skill

    Skill published by posthog under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to produce a structured report on slow ClickHouse queries
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.5 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/hogql-deep-dive.md6 KB
    • references/materialization-analysis.md4.9 KB
    • references/query-patterns.md17.5 KB
    • SKILL.md20.2 KB

    Origin and licence

    Listed unmodified

    Author
    posthog
    Source
    github.com/posthog/posthog/tree/fcb362bb439b15171da4dfba401bff03ea98bd2b/.agents/skills/generating-clickhouse-query-performance-reports
    Licence
    MIT

    Notice

    « generating-clickhouse-query-performance-reports » (posthog, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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