# Performance of Date-Only vs Date-Time Indexes (forum thread)

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | agent-memory-recency-tracking |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | Performance of Date-Only vs Date-Time Indexes |
| Source URL | https://www.access-programmers.co.uk/forums/goto/post?id=1120144 |
| Source type | forum thread |
| Date researched | 2026-10-09 |
| 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 the search "SQLite last_accessed column unix timestamp vs datetime performance indexing"; an MS Access-focused forum discussion on date-index performance, tangential to SQLite specifically but conceptually adjacent. Not opened or quoted during this pass.

## Changelog

| Date | Change |
|---|---|
| 2026-10-09 | Logged as consulted-but-not-analyzed. |