When I am writing a combinator in Julia, I'd sometimes like to assert that a particular column is not defined.
My specific use case is writing queries at the person level and I am using a partition and collapsing by person_id.
If the input is occurrence level, this will have an unwelcome side effect that is not detectable.
When I am writing a combinator in Julia, I'd sometimes like to assert that a particular column is not defined. My specific use case is writing queries at the person level and I am using a partition and collapsing by person_id. If the input is occurrence level, this will have an unwelcome side effect that is not detectable.