SQLCompyre is a simple Python package that allows you to find and explore the differences between SQL tables, schemas, and entire databases. It provides both a Python interface and a CLI, allowing it to be used for both ad-hoc comparisons as well as in-depth analyses.

SQLCompyre is designed to be dialect-agnostic and should, thus, work with most database systems out-of-the-box.

Given a connection to a database, this snippet will print a report of the differences between two tables:

import sqlalchemy as sa
import sqlcompyre as sc

engine = sa.create_engine("<your_connection_string>")
comparison = sc.compare_tables(engine, "<left table name>", "<right table name>")

report = comparison.summary_report()
print(report)

To find more examples and get started, please visit the documentation.

SQLCompyre can be installed via pip or conda:

pip install sqlcompyre
# or
micromamba install sqlcompyre
# or
conda install sqlcompyre

Details on its usage can be found in the documentation.

This project is managed by pixi. You can install the package in development mode using:

git clone https://github.com/quantco/sqlcompyre
cd sqlcompyre

pixi run pre-commit-install
pixi run postinstall

1. Make sure you have msodbcsql18 installed, or install it here

2. Make sure you have Docker installed, or install it here

3. Create a local test database with the following command:

docker compose up

4. Set environment variable

export DB_CONNECTION_STRING="mssql+pyodbc://sa:Passw0rd@localhost:1435/master?driver=ODBC+Driver+18+for+SQL+Server&Encrypt=no"

5. Navigate to the main directory of this repository and run pytest.

pixi run test