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 -- GPG 40BE 5B0E C98E 1713 AFA6 5BC0 3BEA AC80 7D4F C89B