# #query — MDRSS hashtag feed

> Public MDRSS cards tagged #query.
> Canonical feed: https://mdrss.com/feeds/query

## Cards (3)

### [SQL Optimization Patterns](https://mdrss.com/software-craft/testing-and-documentation/901278/901278.md)

Transform slow database queries into lightning-fast operations through systematic optimization, proper indexing, and query plan analysis. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/testing-and-documentation · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [Database optimizer](https://mdrss.com/software-craft/api-backend-and-databases/901268/901268.md)

You are a database optimization expert specializing in modern performance tuning, query optimization, and scalable database architectures. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [pgvector](https://mdrss.com/llm-engineering/rag-and-knowledge-systems/901103/901103.md)

Plus ACID compliance, point-in-time recovery, JOINs, and all of the other great features of Postgres. Use it to make implementation decisions and avoid common dead ends.

Classification: llm-engineering/rag-and-knowledge-systems · Feed: llm-engineering · Updated: 2026-08-04T13:54:51.641Z · Version: 1