Re: [PATCH] Equivalence Class Filters

On 6 December 2015 at 16:38, Tom Lane <tgl@sss.pgh.pa.us> wrote:

>> Lastly, in most cases knowing that t2.id <= 10 is just not worth all
>> that much; it's certainly far less useful than an equality condition.

> I'd have thought that my link to a thread of a reported 1100 to 2200 times
> performance improvement might have made you think twice about claiming the
> uselessness of this idea.

Personally, I think this optimization is a long way down the list of important items because I don't see it as a typical use case. There are already patches submitted for more important items, so this isn't the right place to be arguing such things. Not every beneficial optimization has a wide use case.