Re: [17] collation provider "builtin"

On 6/14/23 19:20, Thomas Munro wrote:
> On Thu, Jun 15, 2023 at 10:55 AM Jeff Davis <pgsql(at)j-davis(dot)com> wrote:
>> The locale "C" (and equivalently, "POSIX") is not really a libc locale;
>> it's implemented internally with memcmp for collation and
>> pg_ascii_tolower, etc., for ctype.
>>
>> The attached patch implements a new collation provider, "builtin",
>> which only supports "C" and "POSIX". It does not change the initdb
>> default provider, so it must be requested explicitly. The user will be
>> guaranteed that collations with provider "builtin" will never change
>> semantics; therefore they need no version and indexes are not at risk
>> of corruption. See previous discussion[1].
>
> I haven't studied the details yet but +1 for this idea. It models
> what we are actually doing.

+1 agreed

--
Joe Conway
PostgreSQL Contributors Team
RDS Open Source Databases
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