> Here
> https://www.postgresql.org/docs/current/infoschema-routine-column-usage.html
<https://www.postgresql.org/docs/current/infoschema-routine-column-usage.html>
>
> it is stated that "The view |routine_column_usage| is meant to identify
> all columns that are used by a function or procedure. This information
> is currently not tracked by PostgreSQL."
>
> However, this claim is incorrect because the view provides information
> about the column usage of SQL functions that have SQL-standard function
> body.
Correct, the documentation was not updated when this was added. A few
other views are similarly affected. How about this attached patch.