Show HN: Snowflake Emulator in Rust – Test locally without cloud credits • Hacker News Board

Post by sivchari » Tue, Feb 17, 2026, 12:09 PM UTC

I built a local Snowflake emulator using Rust and DataFusion.

Problem: Snowflake is cloud-only. Testing requires real compute costs.

Solution: A local emulator that's compatible with Snowflake SQL API v2 and the official Go driver.

Supports VARIANT types, JSON functions, LATERAL FLATTEN, window functions, and transactions.

Useful for CI pipelines and local development.