What's New in Version 1.9.0

June 4, 2026 11:12 PM UTC

Version 1.9.0 of the relationalai Python package is now available!

To upgrade, activate your virtual environment and run the following command:

pip install --upgrade relationalai

Upgrade Notes

• If your code uses filter_by() on Concept or Ref, it now emits a Python DeprecationWarning in 1.9.0. Your existing code still works in 1.9.0. Use .lookup() instead of filter_by() going forward.

New Features and Enhancements

• Prescriptive solve() now helps you inspect solved models and diagnose infeasible ones. Use solve(sensitivity=True) after solving to inspect solve diagnostics such as reduced costs and constraint sensitivity. Use solve(conflict=True) to identify infeasibility conflicts, then check solve_info().conflict_status.

• PyRel 1.9.0 improves CLI diagnostics. rai doctor now prints live health checks, and doctor:report collects diagnostic artifacts for support.

Bug Fixes

• Fixed a bug where queries using top(), bottom(), or limit() could fail with a SQL parser error.

• When raiconfig.yaml contains placeholders, rai doctor now identifies the missing configuration instead of failing with a raw connection error.

• If you use grouped optional aggregates over stored relationships, those Snowflake-backed queries now run correctly. Before this fix, they could fail with Unsupported subquery type cannot be evaluated.