As a developer working with Graph-like APIs and SQL databases, I often wished for an easy way to parse $filter, $select, and similar query strings and convert them into SQL. So I built gq-to-sql — a lightweight, safe utility for just that.

Features

✅ Parse Graph-style query strings: $filter, $select, $orderby, $top, $skip

✅ Safe SQL output with parameters (?)

✅ Nested condition support ((age gt 20 or age lt 10))

Example

Input:

?$filter=age gt 20 and city eq 'Vienna'&$select=name,age&$orderby=age desc

Output:

SELECT name, age FROM users WHERE age > ? AND city = ? ORDER BY age desc

Try It Out

npm install gq-to-sql

👉 View it on GitHub: https://github.com/masem1899/graphql-to-sql
👉 Website: https://masem.at/s/devto
👉 Blog Article: https://www.masem.at/blog/introducing-gqtosql-graphstyle-url-filtering-for-sql