Agent skill

SQL Patterns

by aiskillstore in aiskillstore/marketplace

Quick reference for common SQL patterns, CTEs, window functions, and indexing strategies.

No licenceAuto-check passedDatabases

Install SQL Patterns

skills CLI
$ npx skills add aiskillstore/marketplace --skill sql-patterns -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aiskillstore/marketplace sql-patterns --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/0xdarkmatter/sql-patterns .claude/skills/sql-patterns && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
sql-patterns
GitHub stars
430
Used in
1 other repo
Token cost
~631 tokens
SKILL.md length
155 words
Files
4 (incl. references)
Skills in repo
1,085
Repo updated
First seen
Licence
None found

At a glance

Quick reference for common SQL patterns, CTEs, window functions, and indexing strategies.

  • Window functions
  • SKILL.md covers CTE (Common Table Expressions), Window Functions (Quick…, JOIN Reference and Pagination, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve SQL

What it does

SQL Patterns is an agent skill from aiskillstore/marketplace. Quick reference for common SQL patterns, CTEs, window functions, and indexing strategies. Triggers on: sql patterns, cte example, window functions, sql join, index strategy, pagination sql.

Its SKILL.md is about 630 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `references/indexing-strategies.md`, `references/window-functions.md` and `skill-report.json`).

It sits in Databases, covering SQL. It works with SQL. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Window functions
  • Tasks that involve SQL

Example prompts

  • “/sql-patterns”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write

What it can do on your machine

Read from SKILL.md and the folder at commit 4ac52da. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are sql).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

SQL Patterns loads about 631 tokens when it runs, and up to ~4.2k if it reads all its reference files. Until then it costs about 51 tokens; SKILL.md has 155 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~51
When it runs · the whole SKILL.md, loaded when a task matches
~631
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 155 words (~631 tokens).

“Quick reference for common SQL patterns.”

— opening of SKILL.md by aiskillstore
name
sql-patterns
allowed-tools
Read, Write

Read the full SKILL.md on GitHub

Files

SKILL.md and 3 other files (references) in skills/0xdarkmatter/sql-patterns of aiskillstore/marketplace.

  • SKILL.md
  • references/indexing-strategies.md
  • references/window-functions.md
  • skill-report.json

Open the folder on GitHubat commit 4ac52da

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.

Compare with similar skills

SQL Patterns next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

SQL Patterns compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
SQL Patterns this skillaiskillstore/marketplace4301 repos~631Automated safety check: PassNone
Evolving The Data ModelTriliumNext/Trilium38k—~2.1kAutomated safety check: PassAGPL-3.0
SQL Optimization Patternsynulihao/AgentSkillOS61710 repos~3.3kAutomated safety check: PassNone
SQL PortabilityHL7/sql-on-fhir150—~512Automated safety check: PassCustom licence
DB Migrationskurealnum/dotfiles290—~820Automated safety check: PassNone
Contact FilterChatbotXIO/ChatbotX878—~2.5kAutomated safety check: PassCustom licence

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Works with

Categories

Questions about SQL Patterns

What does SQL Patterns do?

Quick reference for common SQL patterns, CTEs, window functions, and indexing strategies. SQL Patterns is an agent skill from aiskillstore/marketplace. Quick reference for common SQL patterns, CTEs, window functions, and indexing strategies.

When should I use SQL Patterns?

SQL Patterns fits situations like: window functions; tasks that involve SQL.

How do I install SQL Patterns in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill sql-patterns -a claude-code`. Or copy the skill folder (skills/0xdarkmatter/sql-patterns in aiskillstore/marketplace) into .claude/skills/sql-patterns in your project. Claude Code loads it when a task matches its description.

How do I install SQL Patterns in Codex?

Run `npx skills add aiskillstore/marketplace --skill sql-patterns -a codex`. Or copy the skill folder (skills/0xdarkmatter/sql-patterns in aiskillstore/marketplace) into .agents/skills/sql-patterns in your project. Codex loads it when a task matches its description.

Can I use SQL Patterns in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill sql-patterns -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sql-patterns, .gemini/skills/sql-patterns, .github/skills/sql-patterns and .opencode/skills/sql-patterns in your project.

What does SQL Patterns need to run?

SKILL.md names no scripts, command-line tools or credentials: SQL Patterns is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write.

Does SQL Patterns access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is SQL Patterns safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does SQL Patterns use?

No licence was found for SQL Patterns or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does SQL Patterns use?

About 631 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.6k tokens, read only when the agent opens those files.

What are the alternatives to SQL Patterns?

Skills that share tags, products or a category with SQL Patterns: Evolving The Data Model (TriliumNext/Trilium, 38k stars), SQL Optimization Patterns (ynulihao/AgentSkillOS, 617 stars), SQL Portability (HL7/sql-on-fhir, 150 stars) and DB Migrations (kurealnum/dotfiles, 290 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains SQL Patterns?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.