What is SQLite WITHOUT ROWID and when to use it?

It's a table option that makes your PRIMARY KEY a clustered index, skipping hidden ROWID overhead — perfect for PK-heavy queries, saving space and speed.

How does pg_sorted_heap add ANN and GraphRAG to PostgreSQL?

Via sorted heap storage for fast lookups, now with vector ANN search and GraphRAG workflows for AI retrieval, all native no extras needed.

Does the new PGTune work with PostgreSQL 18 and NVMe?

Yep — tunes I/O for NVMe, use PG18 async I/O, and sizes memory to your data for optimal perf out of the box.

☁️ Cloud & Databases

SQLite's Clustered Secret, Postgres AI Push, and PGTune's Wake-Up

Databases don't get sexy overnight. But SQLite's lean internals, Postgres' AI extensions, and smarter tuning tools just made them punch way above their weight.

theAIcatchup Apr 09, 2026 4 min read

SQLite WITHOUT ROWID clustered index diagram alongside PostgreSQL pg_sorted_heap ANN search visualization

⚡ Key Takeaways

SQLite WITHOUT ROWID delivers clustered indexes for lean, fast storage. 𝕏
pg_sorted_heap brings ANN search and GraphRAG to Postgres, challenging vector DBs. 𝕏
Updated PGTune optimizes for NVMe, PG18 async I/O, and data-aware memory. 𝕏

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theAIcatchup

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#GraphRAG #PGTune #PGTune update #PostgreSQL extensions #SQLite WITHOUT ROWID #pg_sorted_heap

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Originally reported by Dev.to

⚡ Key Takeaways

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