On 2019-11-26 21:39, Thomas Munro wrote:
> On Fri, Nov 8, 2019 at 12:44 PM Thomas Munro <thomas.munro@gmail.com> wrote:
>> The reason for returning an empty string for "C" and "POSIX" is the
>> following comment for get_collation_actual_version():
>>
>> * A particular provider must always either return a non-NULL string or return
>> * NULL (if it doesn't support versions). It must not return NULL for some
>> * collcollate and not NULL for others.
>>
>> I'm not sure why, or if that really makes sense.
>
> Peter E, do you have any thoughts on this question?
Doesn't make sense to me either.
We need to handle the various combinations of null and non-null stored
and actual versions, which we do, but that only applies within a given
collcollate. I don't think we need the property that that comment calls
for.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
