Matthias Apitz <guru(at)unixarea(dot)de> writes:
> We're using pg_dumpall (from 14.1) to dump older clusters and
> restore them into a new 14.1 cluster. The dump contains some databases
> together with roles etc.
> Is there some easy way to restore only one database out of this dump
> file?
No; pg_dumpall's output is just a flat SQL script.
You might consider using "pg_dumpall -g" to get just the roles
(and tablespaces if any), and then dumping desired databases
individually with pg_dump.
If all you have is a previously-made dumpall script, you'd
have to slice it up with an editor.
regards, tom lane