Re: Related tables to a view

[Michael Fuhr <mike(at)fuhr(dot)org>]

On Mon, Dec 25, 2006 at 10:52:03PM +0100, Jan Meyland Andersen wrote:
> If I have a view which is a selection from field1 and field2 from table1
> and field1 and field2 from table2.
> 
> How can I make a selection which returns the relation for the fields in a
> way so I am able to se which field belongs to which table.

You could query pg_depend to find out which tables and columns the
view's rewrite rule depends on but that's not as specific as what
you're requesting.  I'm not aware of a way to associate a particular
table column with a particular view column short of parsing the view
definition or rule action; doing so would have to allow for the
possibility of a view column deriving its value from an arbitrarily
complex expression involving multiple tables, subqueries, etc.

-- 
Michael Fuhr