Prela – Purely Algebraic Relation Combinators
Prela is an embedded query language based on Tarski's Algebra of Relations. Its queries are concise, clear, and fast. It is implemented by shallow embedding in a host programming language: Prela operators are regular functions in the host. The implementation follows continuation-passing style which compiles to efficient columnar execution.
Prela – Purely Algebraic Relation Combinators launched on June 1, 2026 with 73 votes, #574 of 22,647 launches that month and more than 95% of that year's launches.
In plain words
Prela is an embedded query language built on Tarski's Algebra of Relations, designed for developers who need concise and efficient database queries. It integrates directly into host programming languages as regular functions rather than requiring a separate system. The implementation uses continuation-passing style to compile queries into efficient columnar execution, making it suitable for applications requiring both clarity and performance.
written from the facts on this page · September 2026
From the sources
Contribute to remysucre/prela development by creating an account on GitHub.
CIDR reviewers: please visit the cidr branch of the repository for example queries and steps to reproduce the experiments. Prela is an embedded query language focusing on compositionality and control. Its queries are concise, clear, and fast. It is implemented as a library of query combinators (think parser combinators ), allowing the user to freely intermix queries with code in the host programming language. The implementation follows continuation-passing style , resulting in a core engine under 1k lines of code that compiles to efficient columnar execution. Unlike almost all SQL databases, Prela does not come with its query optimizer, and executes queries exactly as they are written. This…from github.com
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