sql-optimization-patterns SKILL.md skillA
sql-optimization-patterns from wshobson/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wshobson/agents/sql-optimization-patterns@git:20260522.be57c0bPins git:20260522.be57c0b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wshobson/agents
- Path
plugins/developer-essentials/skills/sql-optimization-patterns/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260522.be57c0b, committed May 22, 2026
- First version recorded
- Oct 24, 2025
- Size
- 5,961 bytes
- Repository stars
- 42,320
- License
- MIT
Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database schemas, or optimizing application performance.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# SQL Optimization Patterns Transform slow database queries into lightning-fast operations through systematic optimization, proper indexing, and query plan analysis. ## When to Use This Skill - Debugging slow-running queries - Designing performant database schemas - Optimizing application response times - Reducing database load and costs - Improving scalability for growing datasets - Analyzing EXPLAIN query plans - Implementing efficient indexes - Resolving N+1 query problems ## Core Concepts ### 1. Query Execution Plans (EXPLAIN) Understanding EXPLAIN output is fundamental to optimization. **PostgreSQL EXPLAIN:** ```sql -- Basic explain EXPLAIN SELECT * FROM users WHERE email = 'user@example.com'; -- With actual execution stats EXPLAIN ANALYZE SELECT * FROM users WHERE email = 'user@example.com'; -- Verbose output with more details EXPLAIN (ANALYZE, BUFFERS, VERBOSE) SELECT u.*, o.order_total FROM users u JOIN orders o ON u.id = o.user_id WHERE u.created_at > NOW() - INTERVAL '30 days'; ``` **Key Metrics to Watch:** - **Seq Scan**: Full table scan (usually slow for large tables) - **Index Scan**: Using index (good) …
Read the whole file at its exact version.
How to install
mdr add wshobson/agents/sql-optimization-patterns@sha256:cfe8234323daaeb4The line at the top of this page pins the label git:20260522.be57c0b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_e65fbyybcwlx5tjr)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Oct 24, 2025 and May 22, 2026, about one every 70 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260522.be57c0b latest | 2026-05-22 | be57c0b | 5,961 B | A | view · diff |
| git:20260307.47a5dbc | 2026-03-07 | 47a5dbc | 12,567 B | A | view · diff |
| git:20260119.5684887 | 2026-01-19 | 5684887 | 13,109 B | A | view · diff |
| git:20251024.ed129a8 | 2025-10-24 | ed129a8 | 13,093 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5961 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
wshobson/agents · 42,320 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_e65fbyybcwlx5tjr GET https://markdownregistry.com/api/v1/resolve?ref=wshobson/agents/sql-optimization-patterns GET https://markdownregistry.com/api/v1/blob/cfe8234323daaeb47577261c96933f519004fad2f45f1460f340b883af5d7354
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.