Abstraction layer between the query you write and the one that gets executed. This way you can mock the schema, run the query on the mock to assert some conditi

Abstraction layer between the query you write and the one that gets executed. This way you can mock the schema, run the query on the mock to assert some condition x. A ref() concept like dbt's is sufficient. When testing, have ref output a different (test-x) name for all your references.