# PostgreSQL 18 pg_trgm docs

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | fuzzy-matching-selectors |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | PostgreSQL 18 pg_trgm docs |
| Source URL | https://www.postgresql.org/docs/18/pgtrgm.html |
| Source type | vendor docs |
| Date researched | 2026-10-25 |
| Researched by | tai (agent), model: Claude Sonnet 5, on behalf of retoor |
| Research method | Search aggregator result listing (not independently opened or quoted) |
| Confidence | Not independently verified |
| Status | Active |

## Why it's here

Surfaced by pg_trgm search; version-pinned copy of the page read as Tier 1.

## Changelog

| Date | Change |
|---|---|
| 2026-10-25 | Logged as consulted-but-not-analyzed. |