What I Learned Building a Pure Go PostgreSQL Parser

Why I built it I needed a PostgreSQL parser that could run inside Go tooling without CGO, external binaries, or runtime dependencies. What made PostgreSQL parsing harder than expected SQL is not one grammar PostgreSQL has a lot of dialect-specific edge cases AST shape matters more than “can it parse” Error handling becomes a product feature Real-world SQL is uglier than examples Why pure Go mattered No CGO, easy installation, works in CI, easy to embed in linters and developer tools. What 200+ G