Re: [HACKERS] rewrite HeapSatisfiesHOTAndKey
От | Amit Kapila |
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Тема | Re: [HACKERS] rewrite HeapSatisfiesHOTAndKey |
Дата | |
Msg-id | CAA4eK1LP2pu08xF=N-PSsL5npDmz29JD9xAwvhSKyqy0sximbQ@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: [HACKERS] rewrite HeapSatisfiesHOTAndKey (Pavan Deolasee <pavan.deolasee@gmail.com>) |
Ответы |
Re: [HACKERS] rewrite HeapSatisfiesHOTAndKey
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Список | pgsql-hackers |
On Mon, Jan 2, 2017 at 9:28 AM, Pavan Deolasee <pavan.deolasee@gmail.com> wrote: > > > On Mon, Jan 2, 2017 at 8:52 AM, Amit Kapila <amit.kapila16@gmail.com> wrote: >> >> >> I think there is some chance that such a change could induce >> regression for the cases when there are many index columns or I think >> even when index is on multiple columns (consider index is on first and >> eight column in a ten column table). >> > > I don't see that as a problem because the routine only checks for columns > that are passed as "interesting_cols". > Right, but now it will evaluate for all interesting_cols whereas previously it would just stop at first if that column is changed. -- With Regards, Amit Kapila. EnterpriseDB: http://www.enterprisedb.com
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