From: | eugene(dot)mindrov(at)gmail(dot)com |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: How to get comments for view columns? |
Date: | 2007-05-04 09:22:28 |
Message-ID: | 1178270548.816106.33770@l77g2000hsb.googlegroups.com |
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Thread: | |
Lists: | pgsql-general |
Tom Lane wrote:
> What do you consider "selected"? Given a view defined as
>
> select a, b, c+d as sum from tab where e > 42;
>
> what output are you wishing for?
>
> AFAIR the dependency mechanism will treat a,b,c,d,e alike. To do more
> you'd need to grovel through the pg_rewrite expression for the view's
> select rule, which'd be excruciatingly painful from a client program
> for lack of any supporting code.
>
> regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Have you searched our list archives?
>
> http://archives.postgresql.org/
Sorry for not being overly accurate, I didn't consider a view with
expressions as columns, they slipped my mind, because the views I was
interested in contain only table columns, no expressions whatsoever.
But seems you're right, there's no easy way to extract underlying
comments...
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