Clarification about CTE in staging model

[sdebruyn]

The style guide recommends to use CTEs for transformation steps, ending with a CTE called final. It also recommends to use staging models to select from sources.

Would you also recommend to use a single CTE called final in these staging models?

E.g. this dbt learn course doesn't have that CTE and IMHO this makes sense as the only purpose there is to map the sources and you should not do any transformation logic in there.

cc @coapacetic (maintainer of that course)