sql
100 / 100 · Low risk
Fine to try.
Use when writing or optimizing SQL. Covers query planning, indexing strategy, window functions, CTEs, transaction isolation, and reading EXPLAIN output. Trigger on "this query is slow", "how do i read this explain plan", "write a window function for running totals", "what isolation level should i use". Do not use when the whole database is the bottleneck under load — see the database-performance skill; for Postgres-specific operations, see the postgres skill.
What this skill can do
We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'sql' ] || [ -L ~/.agents/skills/'sql' ]; then echo 'A skill folder named sql already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/nimadorostkar/Claude-Skills-collection' "$d" && git -C "$d" checkout --quiet '1691932edc17063d712a85d02bcc7a1cd3791057' -- 'skills/languages/sql' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/languages/sql' ~/.agents/skills/'sql' && rm -rf "$d"; fi
Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'sql' ~/.claude/skills/'sql' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
[](https://zalavijaysinh.github.io/skilltrust/repos/nimadorostkar/Claude-Skills-collection/)
Score history
| Date | Version | Score |
|---|---|---|
| 2026-11-09 | 1691932 | 100 |
| 2026-11-07 | 31f227e | 100 |