On Oct 1, 2008, at 12:12 AM, Gurjeet Singh wrote:
> On Wed, Oct 1, 2008 at 9:39 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> "Gurjeet Singh" <singh.gurjeet@gmail.com> writes:
> > On Wed, Oct 1, 2008 at 3:07 AM, Decibel! <decibel@decibel.org>
> wrote:
> >> ERROR: aggregates not allowed in WHERE clause
>
> > No, the real issue is that you are referencing the outer table's
> column's
> > max() in the inner query (correlated sub-query).
>
> Yeah. It's not easy to see how the software could guess your real
> intentions here. We could maybe offer a vaguely-worded HINT but I'm
> not able to think of wording that would be very helpful.
>
> Can we do something like this in the code:
>
> if( "level of the referenced column's relation" != "level of
> the (sub)query being processed" )
> errhint( "The subquery may be unintentionally referencing
> an outer query's column!" );
Yeah, something like that would be very helpful.
> Mail sent from my BlackLaptop device
Haha. +1
--
Decibel!, aka Jim C. Nasby, Database Architect decibel@decibel.org
Give your computer some brain candy! www.distributed.net Team #1828