prql-python

prql-python offers Rust bindings to the prql-compiler Rust library. It exposes a Python method compile(query: str) -> str.

This is consumed by PyPrql & dbt-prql.

The crate is not published to crates.io; only to PyPI at https://pypi.org/project/prql-python/.

Installation

pip install prql-python

Usage

import prql_python as prql
prql_query = """
    from employees
    join salaries (==emp_id)
    group {employees.dept_id, employees.gender} (
      aggregate {
        avg_salary = average salaries.salary
      }
    )
"""
options = prql.CompileOptions(
    format=True, signature_comment=True, target="sql.postgres"
)
sql = prql.compile(prql_query)
sql_postgres = prql.compile(prql_query, options)

Relies on pyo3 for all the magic.