Re: WIP: multivariate statistics / proof of concept
tv@fuzzy.cz
From: Tomas Vondra <tv@fuzzy.cz>
To: pgsql-hackers@postgresql.org
Date: 2014-12-09T20:15:54Z
Lists: pgsql-hackers
On 8.12.2014 02:01, Michael Paquier wrote: > On Sun, Nov 16, 2014 at 3:35 AM, Tomas Vondra <tv@fuzzy.cz> wrote: >> Thanks for the link. I've been looking for a good dataset with such >> data, and this one is by far the best one. >> >> The current version of the patch supports only data types passed by >> value (i.e. no varlena types - text, ), which means it's impossible to >> build multivariate stats on some of the interesting columns (state, >> city, ...). >> >> I guess it's time to start working on removing this limitation. > Tomas, what's your status on this patch? Are you planning to make it > more complicated than it is? For now I have switched it to a "Needs > Review" state because even your first version did not get advanced > review (that's quite big btw). I guess that we should switch it to the > next CF. Hello Michael, I agree with moving the patch to the next CF - I'm working on the patch, but I will take a bit more time to submit a new version and I can do that in the next CF. regards Tomas
Commits
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Collect and use multi-column dependency stats
- 2686ee1b7ccf 10.0 landed
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Implement SortSupport for macaddr data type
- f90d23d0c518 10.0 cited
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Implement multivariate n-distinct coefficients
- 7b504eb282ca 10.0 landed
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Generate fmgr prototypes automatically
- 352a24a1f9d6 10.0 cited