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Window Functions

Category: General  ·  Sub-category: general-misc  ·  Last updated:
Use window functions to rank, compare to neighbours, and compute running totals without collapsing rows or self-joining. Use when you need per-row context such as a rank, a previous value, or a running sum.
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From the source SKILL.md

Window functions answer questions that otherwise force a self-join or a subquery per row: what rank is this, what was the previous value, how much of the total is this. They compute across a set of rows while leaving every row in the output, which is what separates them from aggregation.

What this skill does

Window Functions is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/window-functions/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when you need per-row context such as a rank, a previous value, or a running sum.

Who uses this skill

The Window Functions Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 183,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/window-functions
curl -L https://claudskills.com/skills/window-functions/SKILL.md \
  -o ~/.claude/skills/window-functions/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/window-functions/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/window-functions/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\window-functions\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Window Functions Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/window-functions/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Window Functions skill do?
Use window functions to rank, compare to neighbours, and compute running totals without collapsing rows or self-joining. Use when you need per-row context such as a rank, a previous value, or a running sum.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Window Functions skill?
Use Window Functions when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Window Functions" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the Window Functions skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Window Functions is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
Amey-Thakur. (2026). Window Functions [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/window-functions/
BibTeX
@misc{window-functions-2026,
  author    = {Amey-Thakur},
  title     = {Window Functions [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/window-functions/}
}

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Grade A · scanned 2026-08-11 — free static scan against the OWASP Agentic Skills Top 10.

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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