Re: [HACKERS] PATCH: multivariate histograms and MCV lists

On Sun, Apr  1, 2018 at 06:07:55PM +0200, Tomas Vondra wrote:
> Hi,
> 
> The attached patch version modifies how the non-MCV selectivity is
> computed, along the lines explained in the previous message.
> 
> The comments in statext_clauselist_selectivity() explain it in far more
> detail, but we this:

Uh, where are we on this patch?  It isn't going to make it into PG 11? 
Feature development for this has been going on for years.  I thought
when Dean Rasheed got involved that it would be applied for this
release.

I realize this is a complex feature, but I think it will solve 80-90% of
optimizer complaints, and I don't see any other way to fix them than
this.  This seems like the right way to fix optimizer problems, instead
of optimizer hints.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

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