The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/13/backup-dump.html
Description:
In doc version 13 section 25.1.1 it reads, "The dumps produced by pg_dump
are relative to template0. This means that any languages, procedures, etc.
added via template1 will also be dumped by pg_dump. As a result, when
restoring, if you are using a customized template1, you must create the
empty database from template0, as in the example above." Unless one knows
that template0 and template1 start off identical the wording above is
confusing because it doesn't make sense why a modified template1 would
necessitate ensuring creation from template0. I think a much clearer
wording would be, "In a new cluster template0 and template1 are identical.
Additionally, template1 is the source for all CREATE DATABASE commands.
Dumps produced by pg_dump, however, are relative to template0. This means
that any languages, procedures, etc. added via template1 will also be dumped
by pg_dump. As a result, when restoring, if you are using a customized
template1, you must create the empty database from template0, as in the
example above."
Additionally, there is some wording above that is similarly confusing:
"The database dbname will not be created by this command, so you must create
it yourself from template0 before executing psql..."
If template0 and template1 start off the same *must* we create it from
template0 then? This also confuses the statement above.
I think that's enough for y'all to go on. Thanks for the best rdbms out
there!
- jonas