From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
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To: | Jeff Davis <pgsql(at)j-davis(dot)com>, David Fetter <david(at)fetter(dot)org> |
Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Greg Stark <stark(at)mit(dot)edu>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Yugo Nagata <nagata(at)sraoss(dot)co(dot)jp>, amul sul <sulamul(at)gmail(dot)com> |
Subject: | Re: Hash Functions |
Date: | 2017-05-16 23:36:07 |
Message-ID: | 7b19f4e4-a672-517c-44b4-9a6388061593@2ndquadrant.com |
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Lists: | pgsql-hackers |
On 5/16/17 11:10, Jeff Davis wrote:
> I concur at this point. I originally thought hash functions might be
> made portable, but I think Tom and Andres showed that to be too
> problematic -- the issue with different encodings is the real killer.
I think it would be OK that if you want to move a hash-partitioned table
to a database with a different encoding, you have to do dump/restore
through the parent table. This is quite similar to what you have to do
now if you want to move a range-partitioned table to a database with a
different locale.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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