qrlew

Qrlew is a SQL-to-SQL differential privacy layer that transforms standard SQL queries into privacy-preserving equivalents. It enables data analysts to run queries on sensitive datasets while mathematically guaranteeing that individual records cannot be identified in the results.

Key Features

• Query Rewriting — Transforms standard SQL queries into differentially private versions that protect individual data points
• Privacy Guarantees — Provides mathematical proofs of differential privacy for transformed queries
• SQL Compatibility — Works with existing SQL databases and query patterns without requiring database modifications
• Rust Implementation — Built as a high-performance Rust library with crate availability on Crates.io
• Integration Ready — Designed to integrate with data processing pipelines and analytics workflows

Philosophy

Qrlew enables practical differential privacy by operating at the SQL level, allowing organizations to protect sensitive data while maintaining analytical utility and compatibility with existing tools.