Metadata from WITH CTE

[hw-monkey]

My desired use of sql-metadata is to be able to create an inventory of assets affected by upcoming schema changes.

Originally, I expected the package would create this SET. However, when I call the Parser(self).columns, I see the CTE columns referenced as well. Has anyone created a strategy to separate the CTE columns from table columns?

I am thinking I would exclude columns from the set when the starts_with is not in the Parser(self).tables. Is this the most efficient method others have implemented?