Introduction
Tutorial
Relations
Filtering
Aggregation
Reference
Syntax
Importing data
Declarations
1. Variables — let & into
2. Functions
Standard library
1. Transforms
3. Aggregation functions
4. Date functions
5. Mathematical functions
6. Text functions
7. Removing duplicates
Specification
Project
Changelog
Target & version
Bindings
1. .NET
2. Elixir
3. Java
4. JavaScript
5. PHP
6. Python
7. R
8. Rust
Integrations
Contributing to PRQL
1. Development
2. Language design

PRQL language book

Specification

This chapter explains PRQL’s semantics: how expressions are interpreted and their meaning. It’s intended for advanced users and compiler contributors.