In client support of v10 features, use standard schema handling.

Back-patch to v10.  This continues the work of commit
08035146.

Discussion: https://postgr.es/m/CAKOSWN=ds66zLw2SqkLTM8wbXFgDbc_OdkmT3dJfPT2mE5kipA@mail.gmail.com

src/bin/pg_dump/pg_dump.c

@@ -3475,12 +3475,15 @@ getPublications(Archive *fout)
 
 	resetPQExpBuffer(query);
 
+	/* Make sure we are in proper schema */
+	selectSourceSchema(fout, "pg_catalog");
+
 	/* Get the publications. */
 	appendPQExpBuffer(query,
 					  "SELECT p.tableoid, p.oid, p.pubname, "
 					  "(%s p.pubowner) AS rolname, "
 					  "p.puballtables, p.pubinsert, p.pubupdate, p.pubdelete "
-					  "FROM pg_catalog.pg_publication p",
+					  "FROM pg_publication p",
 					  username_subquery);
 
 	res = ExecuteSqlQuery(fout, query->data, PGRES_TUPLES_OK);
@@ -3631,6 +3634,9 @@ getPublicationTables(Archive *fout, TableInfo tblinfo[], int numTables)
 
 	query = createPQExpBuffer();
 
+	/* Make sure we are in proper schema */
+	selectSourceSchema(fout, "pg_catalog");
+
 	for (i = 0; i < numTables; i++)
 	{
 		TableInfo  *tbinfo = &tblinfo[i];
@@ -3656,8 +3662,7 @@ getPublicationTables(Archive *fout, TableInfo tblinfo[], int numTables)
 		/* Get the publication membership for the table. */
 		appendPQExpBuffer(query,
 						  "SELECT pr.tableoid, pr.oid, p.pubname "
-						  "FROM pg_catalog.pg_publication_rel pr,"
-						  "     pg_catalog.pg_publication p "
+						  "FROM pg_publication_rel pr, pg_publication p "
 						  "WHERE pr.prrelid = '%u'"
 						  "  AND p.oid = pr.prpubid",
 						  tbinfo->dobj.catId.oid);
@@ -3783,13 +3788,16 @@ getSubscriptions(Archive *fout)
 	if (dopt->no_subscriptions || fout->remoteVersion < 100000)
 		return;
 
+	/* Make sure we are in proper schema */
+	selectSourceSchema(fout, "pg_catalog");
+
 	if (!is_superuser(fout))
 	{
 		int			n;
 
 		res = ExecuteSqlQuery(fout,
 							  "SELECT count(*) FROM pg_subscription "
-							  "WHERE subdbid = (SELECT oid FROM pg_catalog.pg_database"
+							  "WHERE subdbid = (SELECT oid FROM pg_database"
 							  "                 WHERE datname = current_database())",
 							  PGRES_TUPLES_OK);
 		n = atoi(PQgetvalue(res, 0, 0));
@@ -3809,8 +3817,8 @@ getSubscriptions(Archive *fout)
 					  "(%s s.subowner) AS rolname, "
 					  " s.subconninfo, s.subslotname, s.subsynccommit, "
 					  " s.subpublications "
-					  "FROM pg_catalog.pg_subscription s "
-					  "WHERE s.subdbid = (SELECT oid FROM pg_catalog.pg_database"
+					  "FROM pg_subscription s "
+					  "WHERE s.subdbid = (SELECT oid FROM pg_database"
 					  "                   WHERE datname = current_database())",
 					  username_subquery);
 	res = ExecuteSqlQuery(fout, query->data, PGRES_TUPLES_OK);
@@ -6830,7 +6838,7 @@ getExtendedStatistics(Archive *fout, TableInfo tblinfo[], int numTables)
 						  "oid, "
 						  "stxname, "
 						  "pg_catalog.pg_get_statisticsobjdef(oid) AS stxdef "
-						  "FROM pg_statistic_ext "
+						  "FROM pg_catalog.pg_statistic_ext "
 						  "WHERE stxrelid = '%u' "
 						  "ORDER BY stxname", tbinfo->dobj.catId.oid);
 

src/bin/psql/describe.c

@@ -5363,7 +5363,7 @@ describeSubscriptions(const char *pattern, bool verbose)
 						 "FROM pg_catalog.pg_subscription\n"
 						 "WHERE subdbid = (SELECT oid\n"
 						 "                 FROM pg_catalog.pg_database\n"
-						 "                 WHERE datname = current_database())");
+						 "                 WHERE datname = pg_catalog.current_database())");
 
 	processSQLNamePattern(pset.db, &buf, pattern, true, false,
 						  NULL, "subname", NULL,