Caqti setence preparation, ppx_rapper
A syntax extension for writing type-safe SQL queries in OCaml with named parameters and PostgreSQL syntax checking.
What is Caqti setence preparation, ppx_rapper?
ppx_rapper is a syntax extension for OCaml that allows developers to write SQL queries directly in their code with named parameters and compile-time type checking. It integrates with the Caqti database library to provide type-safe database interactions, catching SQL syntax errors during preprocessing and reducing runtime bugs.
OCaml developers working with databases who want type-safe SQL queries without manual string concatenation or error-prone parameter binding. It's particularly useful for projects using PostgreSQL, MariaDB, or SQLite via Caqti.
Developers choose ppx_rapper because it combines the flexibility of raw SQL with OCaml's type system, offering compile-time syntax validation, automatic parameter type inference, and support for custom types—all while maintaining minimal runtime overhead.
Overview
Syntax extension for writing SQL in OCaml
Use Cases
Best For
- Building type-safe database layers in OCaml applications
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