| From: | "Etsuro Fujita" <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | "'Kyotaro HORIGUCHI'" <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | <tgl(at)sss(dot)pgh(dot)pa(dot)us>, <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: Get more from indices. |
| Date: | 2013-11-22 09:42:59 |
| Message-ID: | 006801cee767$3ad86130$b0892390$@etsuro@lab.ntt.co.jp |
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| Lists: | pgsql-hackers |
Kyotaro HORIGUCHI wrote:
> Hello. I found a bug(?) in thsi patch as I considered on another patch.
> In truncate_useless_pathkeys, if query_pathkeys is longer than pathkeys
made
> from index columns old patch picked up the latter as IndexPath's pathkeys.
> But the former is more suitable according to the context here.
> the attched pathkey_and_uniqueindx_v4_20131122.patch is changed as
follows.
> - Rebased to current master.
> - truncate_useless_pathkeys returns root->query_pathkeys when
> the index is fully-ordered and query_pathkeys contains the
> pathkeys made from index columns.
OK, I'd like to look at this version of the patch more closely, then.
Thanks,
Best regards,
Etsuro Fujita
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