|From:||Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>|
|Subject:||Re: Additional improvements to extended statistics|
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On Fri, Mar 06, 2020 at 01:15:56AM +0100, Tomas Vondra wrote:
>Here is a rebased version of this patch series. I've polished the first
>two parts a bit - estimation of OR clauses and (Var op Var) clauses, and
>added a bunch of regression tests to exercise this code. It's not quite
>there yet, but I think it's feasible to get this committed for PG13.
>The last part (extended stats on expressions) is far from complete, and
>it's not feasible to get it into PG13. There's too much missing stuff.
Meh, the last part with stats on expression is not quite right and it
breaks the cputube tester, so here are the first two parts only. I don't
plan to pursue the 0003 part for PG13 anyway, as mentioned.
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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