Re: String comparison fails for some cases after migration

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Jayadevan M <maymala(dot)jayadevan(at)gmail(dot)com>
Cc: "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: String comparison fails for some cases after migration
Date: 2021-10-27 06:19:54
Message-ID: 209375.1635315594@sss.pgh.pa.us
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Jayadevan M <maymala(dot)jayadevan(at)gmail(dot)com> writes:
> We moved our PostgreSQL database from one hosting provider to another using
> pgbackrest. In the new environment, some comparison operations were
> failing. The issue was fixed by running an update. But I am trying to find
> out what would have happened.

Did the underlying OS version change? If so, see

https://wiki.postgresql.org/wiki/Locale_data_changes

regards, tom lane

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