check_direct_join_to_source

This check validates that a staging model depends on only a single source.

It's a best practice for staging models to have a one-to-one relationship with their source.

Version History

Added in Debby v0.2.0

Parameters

This check does not support any custom parameters.

Info

For more information about how to set custom parameters for a check, see the documentation on configuration.

Source

def check(model: dict, parents: list[dict]):
    if is_staging_model(model):
        upstream_models = [p for p in parents if p["resource_type"] == "model"]
        assert len(upstream_models) == 0