>
> I'm wondering if PostgreSQL actually reparses the view definition on
> each invocation or if it stores the required information in some
> accessible place.
>
The documentation says:
Whenever a query against a view (i.e. a virtual table) is made, the
rewrite system rewrites the user's query to a query that accesses the base tables given in the view definition
instead.
>
> My goal is to take a view name as input and output the tables and
> columns composing the view.
>
I very much doubt this is possible, unless you step deep into
the parser defined in gram.y and scan.l, which is
as you mentioned beyond your scope.
Regars, Christoph
