Infix functions without this keyword

Would just like to say that if we could somehow avoid using this keyword when calling infix functions. We could write Sql Dsl that could look like this:

        query {
            select setOf("id, name") from "person" 
            where "id" eq 1
        }

Instead of this:

        query {
            this select setOf("id, name") from "person" 
            this where "id" eq 1
        }

How hard would it be to solve the ambiguity that is mentioned in: