tool.sql_queries.50fd9e618e4fbdd3 SKILL.md skillA
tool.sql_queries.50fd9e618e4fbdd3 from ai45lab/openart is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ai45lab/openart/tool.sql_queries.50fd9e618e4fbdd3@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ai45lab/openart
- Path
openart-tools/tool.sql_queries.50fd9e618e4fbdd3/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Jul 17, 2026
- Size
- 11,241 bytes
- Repository stars
- 271
- License
- AGPL-3.0
Write correct, performant, readable SQL across all major data warehouse.
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
Use this skill when the OpenART registry selects `tool.sql_queries.50fd9e618e4fbdd3` for the current task.
# SQL Queries Skill
Write correct, performant, readable SQL across all major data warehouse dialects.
## Dialect-Specific Reference
### PostgreSQL (including Aurora, RDS, Supabase, Neon)
**Date/time:**
```sql
-- Current date/time
CURRENT_DATE, CURRENT_TIMESTAMP, NOW()
-- Date arithmetic
date_column + INTERVAL '7 days'
date_column - INTERVAL '1 month'
-- Truncate to period
DATE_TRUNC('month', created_at)
-- Extract parts
EXTRACT(YEAR FROM created_at)
EXTRACT(DOW FROM created_at) -- 0=Sunday
-- Format
TO_CHAR(created_at, 'YYYY-MM-DD')
```
**String functions:**
```sql
-- Concatenation
first_name || ' ' || last_name
CONCAT(first_name, ' ', last_name)
-- Pattern matching
column ILIKE '%pattern%' -- case-insensitive
column ~ '^regex_pattern$' -- regex
-- String manipulation
LEFT(str, n), RIGHT(str, n)
SPLIT_PART(str, delimiter, position)
REGEXP_REPLACE(str, pattern, replacement)
```
**Arrays and JSON:**
```sql
-- JSON access
data->>'key' -- text
data->'nested'->'key' -- json
data#>>'{path,to,key}' -- nested text
-- Array operations
ARRAY_AGG(column)
…Read the whole file at its exact version.
How to install
mdr add ai45lab/openart/tool.sql_queries.50fd9e618e4fbdd3@sha256:4c3f4d67381792f4The line at the top of this page pins the label v1.0.0, 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_v2wl2yro2xtayrrx)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 17, 2026.
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 (11241 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
ai45lab/openart · 271 stars · license AGPL-3.0 · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_v2wl2yro2xtayrrx GET https://markdownregistry.com/api/v1/resolve?ref=ai45lab/openart/tool.sql_queries.50fd9e618e4fbdd3 GET https://markdownregistry.com/api/v1/blob/4c3f4d67381792f4a0305b7b31b4d3be20775c108ecee5927f0a65c5eca4652c
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.