On Mon, 2024-07-22 at 08:37 +0200, Pavel Stehule wrote: > > > --- a/doc/src/sgml/ref/pg_restore.sgml > > > +++ b/doc/src/sgml/ref/pg_restore.sgml > > > > > + <varlistentry> > > > + <term><option>-A <replaceable class="parameter">schema_variable</replaceable></option></term> > > > + <term><option>--variable=<replaceable class="parameter">schema_variable</replaceable></option></term> > > > + <listitem> > > > + <para> > > > + Restore a named schema variable only. Multiple schema variables may be specified with > > > + multiple <option>-A</option> switches. > > > + </para> > > > + </listitem> > > > + </varlistentry> > > > > Do we need that? We have no such option for functions and other non-relations. > > It is designed to be consistent with others. pg_restore supports functions -P, triggers -T > > > > And if we really want such an option for "pg_restore", why not for "pg_dump"? > > > > I have no strong opinion about it, I think so it is consistent with other non-relations, but it is not important. > > I moved this feature to a separate patch. It can be committed optionaly or later. > > pg_restore has options -P, -T, and pg_dump does not have these options. These options (functionality) can > be implemented in pg_dump too, but unfortunately -T is used for different purposes (exclude table).
Ah! I didn't realize that -P and -T are the same. So no objections, although I'm not sure if anyone will ever want to restore a single variable from a backup.
I wrote it mainly for completeness and symmetry. I can imagine only one use case - possibility to offline trace the changes of schema, but who knows. The cost is just an occupation of 'A' char. Maybe it doesn't need a short option, and a long option can be good enough.