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Agent skill

Postgres Patterns

by affaan-m in affaan-m/ECC

用于查询优化、模式设计、索引和安全性的PostgreSQL数据库模式。基于Supabase最佳实践. An agent skill from affaan-m/ECC.

MITAuto-check passedDatabases

Install Postgres Patterns

skills CLI
$ npx skills add affaan-m/ECC --skill postgres-patterns -a claude-code

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

GitHub CLI
$ gh skill install affaan-m/ECC postgres-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/affaan-m/ECC.git skills-src && mkdir -p .claude/skills && cp -r skills-src/docs/zh-CN/skills/postgres-patterns .claude/skills/postgres-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
postgres-patterns
GitHub stars
274k
Used in
3 other repos
Token cost
~812 tokens
SKILL.md length
131 words
Files
1
Skills in repo
657
Repo updated
First seen
Licence
MIT

At a glance

用于查询优化、模式设计、索引和安全性的PostgreSQL数据库模式。基于Supabase最佳实践. An agent skill from affaan-m/ECC.

  • Databases work in your project
  • SKILL.md covers 何时激活, 快速参考 and 相关
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Postgres Patterns is an agent skill from affaan-m/ECC. 用于查询优化、模式设计、索引和安全性的PostgreSQL数据库模式。基于Supabase最佳实践。

Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Databases. It works with PostgreSQL and Supabase. The repository describes itself as: The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond. The licence is MIT.

When your agent uses it

  • Databases work in your project

Example prompts

  • “/postgres-patterns”

What it can do on your machine

Read from SKILL.md and the folder at commit ef648e0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    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

Postgres Patterns loads about 812 tokens when it runs. Until then it costs about 17 tokens; SKILL.md has 131 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~17
When it runs · the whole SKILL.md, loaded when a task matches
~812

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

The full file from affaan-m/ECC at commit ef648e0, republished under its MIT licence (© affaan-m). 131 words, ~812 tokens.

Download SKILL.mdSave it as .claude/skills/postgres-patterns/SKILL.md (or your agent's skills folder).
name
postgres-patterns
description
用于查询优化、模式设计、索引和安全性的PostgreSQL数据库模式。基于Supabase最佳实践。
origin
ECC

PostgreSQL 模式

PostgreSQL 最佳实践快速参考。如需详细指导，请使用 database-reviewer 智能体。

何时激活

  • 编写 SQL 查询或迁移时
  • 设计数据库模式时
  • 排查慢查询时
  • 实施行级安全性时
  • 设置连接池时

快速参考

索引速查表
查询模式索引类型示例
WHERE col = valueB-tree（默认）CREATE INDEX idx ON t (col)
WHERE col > valueB-treeCREATE INDEX idx ON t (col)
WHERE a = x AND b > y复合索引CREATE INDEX idx ON t (a, b)
WHERE jsonb @> '{}'GINCREATE INDEX idx ON t USING gin (col)
WHERE tsv @@ queryGINCREATE INDEX idx ON t USING gin (col)
时间序列范围查询BRINCREATE INDEX idx ON t USING brin (col)
数据类型快速参考
使用场景正确类型避免使用
IDbigintint，随机 UUID
字符串textvarchar(255)
时间戳timestamptztimestamp
货币numeric(10,2)float
标志位booleanvarchar，int
常见模式

复合索引顺序：

sql
-- Equality columns first, then range columns
CREATE INDEX idx ON orders (status, created_at);
-- Works for: WHERE status = 'pending' AND created_at > '2024-01-01'

覆盖索引：

sql
CREATE INDEX idx ON users (email) INCLUDE (name, created_at);
-- Avoids table lookup for SELECT email, name, created_at

部分索引：

sql
CREATE INDEX idx ON users (email) WHERE deleted_at IS NULL;
-- Smaller index, only includes active users

RLS 策略（优化版）：

sql
CREATE POLICY policy ON orders
  USING ((SELECT auth.uid()) = user_id);  -- Wrap in SELECT!

UPSERT：

sql
INSERT INTO settings (user_id, key, value)
VALUES (123, 'theme', 'dark')
ON CONFLICT (user_id, key)
DO UPDATE SET value = EXCLUDED.value;

游标分页：

sql
SELECT * FROM products WHERE id > $last_id ORDER BY id LIMIT 20;
-- O(1) vs OFFSET which is O(n)

队列处理：

sql
UPDATE jobs SET status = 'processing'
WHERE id = (
  SELECT id FROM jobs WHERE status = 'pending'
  ORDER BY created_at LIMIT 1
  FOR UPDATE SKIP LOCKED
) RETURNING *;
反模式检测**
sql
-- Find unindexed foreign keys
SELECT conrelid::regclass, a.attname
FROM pg_constraint c
JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY(c.conkey)
WHERE c.contype = 'f'
  AND NOT EXISTS (
    SELECT 1 FROM pg_index i
    WHERE i.indrelid = c.conrelid AND a.attnum = ANY(i.indkey)
  );

-- Find slow queries
SELECT query, mean_exec_time, calls
FROM pg_stat_statements
WHERE mean_exec_time > 100
ORDER BY mean_exec_time DESC;

-- Check table bloat
SELECT relname, n_dead_tup, last_vacuum
FROM pg_stat_user_tables
WHERE n_dead_tup > 1000
ORDER BY n_dead_tup DESC;
配置模板
sql
-- Connection limits (adjust for RAM)
ALTER SYSTEM SET max_connections = 100;
ALTER SYSTEM SET work_mem = '8MB';

-- Timeouts
ALTER SYSTEM SET idle_in_transaction_session_timeout = '30s';
ALTER SYSTEM SET statement_timeout = '30s';

-- Monitoring
CREATE EXTENSION IF NOT EXISTS pg_stat_statements;

-- Security defaults
REVOKE ALL ON SCHEMA public FROM public;

SELECT pg_reload_conf();

相关

  • 智能体：database-reviewer - 完整的数据库审查工作流
  • 技能：clickhouse-io - ClickHouse 分析模式
  • 技能：backend-patterns - API 和后端模式

基于 Supabase 代理技能（致谢：Supabase 团队）（MIT 许可证）

© affaan-m, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in docs/zh-CN/skills/postgres-patterns of affaan-m/ECC.

Open the folder on GitHubat commit ef648e0

Used in 3 other repositories

We found 3 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 3 other GitHub owners. This page covers the copy in affaan-m/ECC, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Postgres 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.

Postgres Patterns compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Postgres Patterns this skillaffaan-m/ECC274k3 repos~812Automated safety check: PassMIT
Supabase Postgres Best Practicessupabase/agent-skills2.7k24 repos~808Automated safety check: PassMIT
Add Backendahpxex/open-dashboard146—~3.6kAutomated safety check: PassMIT
Take Doc Screenshotspgplex/pgconsole155—~841Automated safety check: PassApache-2.0
Srtd Devt1mmen/srtd105—~2.3kAutomated safety check: PassMIT
Srtd CLIt1mmen/srtd105—~360Automated safety check: PassMIT

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Works with

Categories

Questions about Postgres Patterns

What does Postgres Patterns do?

用于查询优化、模式设计、索引和安全性的PostgreSQL数据库模式。基于Supabase最佳实践. An agent skill from affaan-m/ECC. Postgres Patterns is an agent skill from affaan-m/ECC.

When should I use Postgres Patterns?

Postgres Patterns fits situations like: databases work in your project.

How do I install Postgres Patterns in Claude Code?

Run `npx skills add affaan-m/ECC --skill postgres-patterns -a claude-code`. Or copy the skill folder (docs/zh-CN/skills/postgres-patterns in affaan-m/ECC) into .claude/skills/postgres-patterns in your project. Claude Code loads it when a task matches its description.

How do I install Postgres Patterns in Codex?

Run `npx skills add affaan-m/ECC --skill postgres-patterns -a codex`. Or copy the skill folder (docs/zh-CN/skills/postgres-patterns in affaan-m/ECC) into .agents/skills/postgres-patterns in your project. Codex loads it when a task matches its description.

Can I use Postgres 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 affaan-m/ECC --skill postgres-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/postgres-patterns, .gemini/skills/postgres-patterns, .github/skills/postgres-patterns and .opencode/skills/postgres-patterns in your project.

What does Postgres Patterns need to run?

SKILL.md names no scripts, command-line tools or credentials: Postgres Patterns is instructions for the agent only.

Does Postgres 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 Postgres 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 Postgres Patterns use?

Postgres Patterns is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Postgres Patterns use?

About 812 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Postgres Patterns?

Skills that share tags, products or a category with Postgres Patterns: Supabase Postgres Best Practices (supabase/agent-skills, 2.7k stars), Add Backend (ahpxex/open-dashboard, 146 stars), Take Doc Screenshots (pgplex/pgconsole, 155 stars) and Srtd Dev (t1mmen/srtd, 105 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Postgres Patterns?

affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 274,360 GitHub stars. The repository holds 657 skills in this directory. The repository was last updated on October 5, 2026.

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