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Reduce Unoptimized Query Oracle

Checked
cockroachdb·vlatest·database

Identifies and suggests optimized SQL query rewrites from CockroachDB's execution plan analysis for faster performance.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add cockroachdb/cockroach --skill reduce-unoptimized-query-oracle -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

cockroachdb

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned cockroachdb/cockroach at d30c905fff.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
d30c905fff
Manifest
.claude/skills/reduce-unoptimized-query-oracle/SKILL.md
Scanned
1 file, 446 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill helps users reduce a test failure log from the unoptimized-query-oracle roachtest to its simplest, reproducible SQL query. The unoptimized-query-oracle test runs random SQL statements and compares results with different optimization settings; discrepancies indicate potential bugs in CockroachDB. This skill guides you through analyzing logs to isolate the problematic query.

When to use it

  • You encounter a failure from the unoptimized-query-oracle roachtest.
  • You need to identify the minimal SQL statement that triggers the test failure.
  • You are debugging issues related to CockroachDB's SQL query optimization.
  • You need to understand the configuration and environment variables used during a failed roachtest run.

Key capabilities

  • Log Analysis: Identifies key files within an artifacts directory (params.log, test.log, failure*.log, unoptimized-query-oracle*.log, cockroach.log).
  • Configuration Determination: Extracts the Git commit hash, determines if runtime assertions are enabled, and identifies metamorphic settings from log files.
  • Environment Variable Identification: Retrieves environment variables used during the test execution.
  • Test Type Classification: Determines whether a test is single-region or multi-region.
  • Build Instructions: Provides commands for checking out code and building CockroachDB, including instructions for builds with runtime assertions enabled.

Example prompts

  • "I have an unoptimized-query-oracle roachtest failure. Can you help me find the failing SQL?"
  • "What's the Git commit hash used in this unoptimized-query-oracle test failure log?"
  • "Are runtime assertions enabled in this unoptimized-query-oracle test failure?"

Tips & gotchas

  • The skill requires access to the artifacts directory from a failed unoptimized-query-oracle roachtest.
  • Understanding Git and basic build commands is helpful for following the instructions provided by the skill.
  • Pay close attention to environment variables, as they can significantly impact test behavior.