| From: | "Guillaume Smet" <guillaume(dot)smet(at)gmail(dot)com> |
|---|---|
| To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | "Gregory Stark" <stark(at)enterprisedb(dot)com>, pgsql-performance <pgsql-performance(at)postgresql(dot)org>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [HACKERS] Estimation problem with a LIKE clause containing a / |
| Date: | 2007-11-09 16:39:51 |
| Message-ID: | 1d4e0c10711090839v288a0614j174bdceadfc6b5b2@mail.gmail.com |
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| Lists: | pgsql-hackers pgsql-performance |
On Nov 9, 2007 5:33 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> he's got no MCVs, presumably because the field
> is unique.
It is. The ancestors field contains the current folder itself so the
id of the folder (which is the primary key) is in it.
--
Guillaume
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