PV-SQL: Synergizing Database Probing and Rule-based Verification for Text-to-SQL Agents

ArXi:2604.17653v1 Announce Type: new Text-to-SQL systems often struggle with deep contextual understanding, particularly for complex queries with subtle requirements. We present PV-SQL, an agentic framework that addresses these failures through two complementary components: Probe and Verify. The Probe component iteratively generates probing queries to retrieve concrete records from the database, resolving ambiguities in value formats, column semantics, and inter-table relationships to build richer contextual understanding.