Build a Production‑Ready SQL Evaluation Engine...

Intro When I first started building a text‑to‑SQL system, the obvious thing was to run the generated query against a database and compare the result with a ground truth. That worked for a handful of examples, but as soon as we hit hundreds of user queries, the naive approach broke down: it was slow, brittle, and offered no insight into why a query failed. What I needed was a two‑layer engine: Fast deterministic checks that catch the most common mistakes in under a second. An AI judge that digs d