Enterprise NL2SQL: How to Build Semantic Layers and Improve Agent Determinism
Lumpy-Championship90 · reddit · 2026-08-05
The author shares experiences and pain points in deploying Snowflake Cortex Agent for NL2SQL within an enterprise. The team currently lacks a unified semantic layer, and the author strongly advocates for establishing a single source of truth before model integration.
The post explores two core engineering challenges:
- Scope Limitation: How to selectively expose parts of the semantic model to the Agent to prevent information overload or unauthorized access.
- Determinism Enhancement: How to make the Agent's generated SQL more rigorous and controllable. To address this, the author introduces the open-source tool SQL Inspector (sqlsure) to enforce physical SQL rules on AI-generated queries. Additionally, the team is exploring how to maximize Cortex Agent's RBAC capabilities without adding extra governance overhead, alongside using tools like Claude Enterprise.
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