> On 07 Sep 2017, at 09:30, Daniel Gustafsson <dan...@yesql.se> wrote:
> 
>> On 06 Sep 2017, at 07:13, David Rowley <david.row...@2ndquadrant.com> wrote:
>> 
>> On 6 September 2017 at 00:43, Daniel Gustafsson <dan...@yesql.se> wrote:
>>> This patch was moved to the currently open Commitfest.  Given the above
>>> comment, is the last patch in this thread still up for review, or are you
>>> working on a new version?  Just to avoid anyone reviewing an outdated 
>>> version.
>> 
>> Hi Daniel,
>> 
>> I've not had time to work on a new version yet and I can't imagine
>> that I will for quite some time.
>> 
>> The idea I had to remove the quadratic search on the list was to add
>> to or modify equal() in equalfuncs.c to have it return -1, 0, +1 and
>> use that as a comparison function in a binary search tree. The Btree
>> would complement List as a way of storing Nodes in no particular
>> order, but in a way that a Node can be found quickly. There's likely
>> more than a handful of places in the planner that would benefit from
>> this already.
>> 
>> It's not a 5-minute patch and it probably would see some resistance,
>> so won't have time to look at this soon.
>> 
>> If the possibility of this increasing planning time in corner cases is
>> going to be a problem, then it might be best to return this with
>> feedback for now and I'll resubmit if I get time later in the cycle.
> 
> For now I’ve marked this “Waiting on Author” awaiting a new patch for the
> community to consider.  If there is no time to hack on this in the current CF
> (which seems likely given your mail above) I’ll move it to the next CF as this
> one draws to a close.

Going back on my previous thinking of moving to the next CF, I am instead
marking this as returned with feedback.  When a new version of the patch is
ready, please re-submit to a future commitfest.

cheers ./daniel

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