Does a tenant filter guarantee high vector recall?
No. Authorization and retrieval quality are separate. Approximate index scans can return too few filtered candidates; evaluate recall, candidate budgets and iterative scans for the actual query.
Answered in
pgvector and Hybrid Search: When Keeping Retrieval in Postgres HelpsPostgres can combine vector and lexical retrieval with rank fusion, simplifying consistency without replacing every dedicated search system.
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