Re: DROP COLLATION vs pg_collation question

Am Sun, Jun 16, 2024 at 04:38:49PM -0400 schrieb Tom Lane:

> It's really kind of moot, since you can't change the encoding
> of an existing database. So any pg_collation entries that are
> for an incompatible encoding cannot be used for anything in that
> database, and they might as well not be there. The reason they
> are there is merely an implementation detail: CREATE DATABASE clones
> those catalogs from the single copy of pg_collation in template0,
> which therefore had better include all collations that might be
> needed.

I see, and since any database can be used as a template for
more databases, which can be create with an encoding
different from the template, it doesn't really make too much
sense to be able to remove even pg_collation entries.

So, DROP COLLATION is somewhat of a smoking gun pointed at my
foot :-)

Thanks,
Karsten
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GPG 40BE 5B0E C98E 1713 AFA6 5BC0 3BEA AC80 7D4F C89B