Re: INSERT and parentheses

On Mon, Apr 26, 2010 at 8:57 AM, Marko Tiikkaja
<marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi> wrote:
> Hi,
>
> This came up on IRC today and I recall several instances of this during
> the last two months or so, so I decided to send a patch.  The problem in
> question occurs when you have extra parentheses in an INSERT list:
>
> INSERT INTO foo(a,b,c) SELECT (a,b,c) FROM ..; or
> INSERT INTO foo(a,b,c) VALUES((0,1,2));
>
> Both of these give you the same error:
> ERROR:  INSERT has more target columns than expressions
>
> The first version is a lot more common and as it turns out, is sometimes
> very hard to spot.  This patch attaches a HINT message to these two
> cases.  The message itself could probably be a lot better, but I can't
> think of anything.
>
> Thoughts?

I suggest adding it to the next CommitFest. Since I've never been
bitten by this, I can't get excited about the change, but I'm also not
arrogant enough to believe that everyone else's experiences are the
same as my own.

...Robert