Collation Provider
PostgreSQL's collation-provider abstraction — the 3-way split between `builtin` (PG-owned), `icu` (ICU library), and `libc` (OS-provided). Covers `src/backend/utils/adt/pg_locale.c` (the dispatcher) + `pg_locale_builtin.c` / `pg_locale_icu.c` / `pg_locale_libc.c` (per-provider implementations) plus the encoding conversion layer (`src/backend/utils/mb/`). Loads when the user asks about `CREATE COLLATION`, provider semantics, `LC_COLLATE` / `LC_CTYPE`, ICU integration + version tracking, the `builtin` provider added PG 17, `collversion` upgrade detection, why an ORDER BY differs between PGs on the same OS, `pg_c_utf8` builtin, or multibyte encoding conversion. Skip when the ask is about client encoding (server-client convert is included but psql `\encoding` is client-side), full-text search dictionaries (different subsystem `tsearch`), or `CREATE TEXT SEARCH CONFIGURATION`.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
Every text comparison in PG (equality, LIKE, ORDER BY, index key comparison) goes through a collation. Collations are catalog objects (pg_collation) that tell the backend WHICH library to use for comparison, WHICH locale within that library, and WHICH encoding the strings are in.
What this skill does
Collation Provider is a community-contributed Claude Code skill in the conversion sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/collation-provider/ and loads when your prompt matches the skill's trigger.
Who uses this skill
The Collation Provider Claude Code skill is built for growth marketers, product-led growth teams, founders running experiments, and performance marketing teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 147,000+ 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/collation-provider
curl -L https://claudskills.com/skills/collation-provider/SKILL.md \
-o ~/.claude/skills/collation-provider/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/collation-provider/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/collation-provider/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\collation-provider\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.
Frequently asked questions
How do I install the Collation Provider Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/collation-provider/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Collation Provider skill do?
PostgreSQL's collation-provider abstraction — the 3-way split between `builtin` (PG-owned), `icu` (ICU library), and `libc` (OS-provided). Covers `src/backend/utils/adt/pg_locale.c` (the dispatcher) + `pg_locale_builtin.c` / `pg_locale_icu.c` / `pg_locale_libc.c` (per-provider implementations) plus the encoding conversion layer (`src/backend/utils/mb/`). Loads when the user asks about `CREATE COLLATION`, provider semantics, `LC_COLLATE` / `LC_CTYPE`, ICU integration + version tracking, the `builtin` provider added PG 17, `collversion` upgrade detection, why an ORDER BY differs between PGs on the same OS, `pg_c_utf8` builtin, or multibyte encoding conversion. Skip when the ask is about client encoding (server-client convert is included but psql `\encoding` is client-side), full-text search dictionaries (different subsystem `tsearch`), or `CREATE TEXT SEARCH CONFIGURATION`.
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 Collation Provider skill?
Use Collation Provider when your Claude Code task falls under the Growth & Marketing category — specifically in the conversion 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 Collation Provider" or describe the task and let Claude pick). Browse related skills at
/category/growth/.
What is a Claude Code skill and how does the Collation Provider 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. Collation Provider is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Growth & Marketing 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
matejformanek. (2026). Collation Provider [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/collation-provider/
BibTeX
@misc{collation-provider-2026,
author = {matejformanek},
title = {Collation Provider [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/collation-provider/}
}Embed this skill
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Security scan
Grade A · scanned 2026-07-10 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
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