GRID: Grammar-Railed Decoding for Enterprise SQL Generation

Jul 15, 2026

GRID is a grammar-constrained decoding engine for SQL generation that leverages LALR(1) parser state to enforce syntactic validity, role-based access control, and schema constraints at the token masking level. The system achieves near-constant per-token computational cost and provides a hash-chained audit trail for compliance. Benchmarks report 3.6–6.7 μs per token and a +13 point gain in execution accuracy on the Spider benchmark at 0.5B model size.

Why it matters: GRID introduces provable guarantees and compliance features to SQL generation, addressing key enterprise requirements with minimal performance overhead.

Full story at: arXiv AI/ML ↗