TutorialsOrdinary

pgvector HNSW Filtering: My RAG Asked for 10 Rows and Got 0

Source: DEV Community·2026-10-04 12:35

Summary

pgvector HNSW filtering runs your WHERE clause after the index scan, so filtered RAG queries return fewer rows than LIMIT. Here's the fix.

CategoryAI Tutorials & Practice

TierOrdinary

Published2026-10-04 12:35

Indexed by AIQB2026-10-04 13:51

SourceDEV Community

AIQB record IDintel-0d994e99cd82415e8a030aa4