| 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> |
| Cc: | <pgsql-hackers(at)postgresql(dot)org>, <tgl(at)sss(dot)pgh(dot)pa(dot)us>, <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: Get more from indices. |
| Date: | 2013-11-27 10:27:58 |
| Message-ID: | 002201ceeb5b$57924c80$06b6e580$@etsuro@lab.ntt.co.jp |
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| Lists: | pgsql-hackers |
Kyotaro HORIGUCHI wrote:
> > * In get_relation_info(), the patch determines the branch condition
> > "keyattno != ObjectIdAttributeNumber". I fail to understand the
> > meaning of this branch condition. Could you explain about it?
> Literally answering, it means oid cannot be NULL (if it exists).
Understood. Thank you for the detailed information. But I'm not sure it's
worth complicating the code. What use cases are you thinking?
Thanks,
Best regards,
Etsuro Fujita
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