Indie dev open-sources Ask Your Data, a Text-to-SQL app that queries 1M-row loan data in plain English
Green_Highlight5508 · reddit · 2026-10-29
A BI/data practitioner built Ask Your Data, an AI-powered Text-to-SQL app demoed on a synthetic 1M-row retail loan portfolio: ask in plain English, and it generates a PostgreSQL query, validates and executes it, then returns the answer in plain language alongside a chart, result table, and the exact SQL so users can verify rather than blindly trust the AI.
- Stack: Next.js, FastAPI, PostgreSQL (Neon), and GPT-4.1-mini; all data is synthetic
- Biggest lesson: the hard part isn't getting the model to write SQL — it's making it understand business terminology, since a syntactically correct query can still be business-wrong
- Live demo and source code are in the comments; the author invites users to try breaking it
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