Horton

Re: MULTISET and additional functions for ARRAY

David Fetter <david@fetter.org>

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From: David Fetter <david@fetter.org>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Itagaki Takahiro <itagaki.takahiro@gmail.com>, Pavel Stehule <pavel.stehule@gmail.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2010-11-15T19:14:37Z
Lists: pgsql-hackers 
On Mon, Nov 15, 2010 at 10:13:40AM -0500, Tom Lane wrote:
> Itagaki Takahiro <itagaki.takahiro@gmail.com> writes:
> > Another issue for sorting is that we have 4 kinds of sorting: ASC/DESC
> > and NULLS FIRST/LAST.
> 
> We have a lot more kinds than that.  See USING.

USING pretty much gives us no chance of optimizing at all.  Could we
maybe see about optimizing the 99% case, which those two bits cover?

Cheers,
David.
-- 
David Fetter <david@fetter.org> http://fetter.org/
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