Here is another patch that fixes a stack of pg_dump bugs:

* Fix help text ordering

* Add back --set-session-authorization to pg_dumpall.  Updated the docs
for that.  Updated help for that.

* Dump ALTER USER commands for the cluster owner ("pgsql").  These are
dumped AFTER the create user and create database commands in case the
permissions to do these have been revoked.

* Dump ALTER OWNER for public schema (because it's possible to change
it).  This was done by adding TOC entries for the public schema, and
filtering them out at archiver time.  I also save the owner in the TOC
entry just for the public schema.

* Suppress dumping single quotes around schema_path and DateStyle
options when they are set using ALTER USER or ALTER DATABASE.  Added a
comment to the steps in guc.c to remind people to update that list.

* Fix dumping in --clean mode against a pre-7.3 server.  It just sets
all drop statements to assume the public schema, allowing it to restore
without error.

* Cleaned up text output.  eg. Don't output -- Tablespaces comment if
there are none.  Same for groups and users.

* Make the commands to DELETE FROM pg_shadow and DELETE FROM pg_group
only be output when -c mode is enabled.  I'm not sure why that hasn't
been done before?!?!

This should be good for application asap, after which I will start on
regression dumping 7.0-7.4 databases.

Christopher Kings-Lynne

doc/src/sgml/ref/pg_dumpall.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dumpall.sgml,v 1.45 2004/07/12 14:35:43 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dumpall.sgml,v 1.46 2004/07/19 21:39:46 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -280,11 +280,14 @@ PostgreSQL documentation
       <term><option>--use-set-session-authorization</></term>
       <listitem>
        <para>
-        This option is obsolete but still accepted for backwards
-        compatibility with <application>pg_dump</application>.
+	Output SQL standard SET SESSION AUTHORIZATION commands instead
+	of OWNER TO commands.  This makes the dump more standards compatible,
+	but depending on the history of the objects in the dump, may not
+	restore properly.
        </para>
       </listitem>
      </varlistentry>
+
     </variablelist>
    </para>
 

src/backend/utils/misc/guc.c

@@ -10,7 +10,7 @@
  * Written by Peter Eisentraut <peter_e@gmx.net>.
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.220 2004/07/19 02:47:10 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.221 2004/07/19 21:39:47 momjian Exp $
  *
  *--------------------------------------------------------------------
  */
@@ -335,6 +335,9 @@ const char *const config_type_names[] =
  * 6. Add it to src/bin/psql/tab-complete.c, if it's a USERSET option.
  *
  * 7. Don't forget to document the option.
+ *
+ * 8. If it's a new GUC_LIST option you must edit pg_dumpall.c to ensure
+ *    it is not single quoted at dump time.
  */
 
 

src/bin/pg_dump/pg_backup_archiver.c

@@ -15,7 +15,7 @@
  *
  *
  * IDENTIFICATION
- *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.c,v 1.89 2004/07/19 21:02:17 tgl Exp $
+ *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.c,v 1.90 2004/07/19 21:39:47 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2356,7 +2356,8 @@ _printTocEntry(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt, bool isDat
 							strcmp(te->desc, "TABLE") == 0 ||
 							strcmp(te->desc, "TYPE") == 0 ||
 							strcmp(te->desc, "VIEW") == 0 ||
-							strcmp(te->desc, "SEQUENCE") == 0
+							strcmp(te->desc, "SEQUENCE") == 0 ||
+							(strcmp(te->desc, "SCHEMA") == 0 && strcmp(te->tag, "public") == 0) /* Only public schema */
 							))
 	{
 		char *temp = _getObjectFromDropStmt(te->dropStmt, te->desc);
@@ -2376,15 +2377,18 @@ _printTocEntry(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt, bool isDat
 		/*
 		 * Really crude hack for suppressing AUTHORIZATION clause of CREATE SCHEMA
 		 * when --no-owner mode is selected.  This is ugly, but I see no other
-		 * good way ...
+		 * good way ...  Also, avoid dumping the public schema as it will already be
+		 * created.
 		 */
-		if (AH->ropt && AH->ropt->noOwner && strcmp(te->desc, "SCHEMA") == 0)
-		{
-			ahprintf(AH, "CREATE SCHEMA %s;\n\n\n", te->tag);
-		}
-		else
-		{
-			ahprintf(AH, "%s\n\n", te->defn);
+		if (strcmp(te->tag, "public") != 0) {
+			if (AH->ropt && AH->ropt->noOwner && strcmp(te->desc, "SCHEMA") == 0)
+			{
+				ahprintf(AH, "CREATE SCHEMA %s;\n\n\n", te->tag);
+			}
+			else
+			{
+				ahprintf(AH, "%s\n\n", te->defn);
+			}
 		}
 	}
 	else if (isData) {

src/bin/pg_dump/pg_dump.c

@@ -12,7 +12,7 @@
  *	by PostgreSQL
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.379 2004/07/13 03:00:17 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.380 2004/07/19 21:39:48 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1492,7 +1492,7 @@ getNamespaces(int *numNamespaces)
 		nsinfo[0].dobj.catId.tableoid = 0;
 		nsinfo[0].dobj.catId.oid = 0;
 		AssignDumpId(&nsinfo[0].dobj);
-		nsinfo[0].dobj.name = strdup("");
+		nsinfo[0].dobj.name = strdup("public");
 		nsinfo[0].usename = strdup("");
 		nsinfo[0].nspacl = strdup("");
 		nsinfo[0].nsptablespace = strdup("");
@@ -4381,11 +4381,6 @@ dumpNamespace(Archive *fout, NamespaceInfo *nspinfo)
 	qnspname = strdup(fmtId(nspinfo->dobj.name));
 
 	/*
-	 * If it's the PUBLIC namespace, suppress the CREATE SCHEMA record
-	 * for it, since we expect PUBLIC to exist already in the
-	 * destination database.  But do emit ACL in case it's not standard,
-	 * likewise comment.
-	 *
 	 * Note that ownership is shown in the AUTHORIZATION clause,
 	 * while the archive entry is listed with empty owner (causing
 	 * it to be emitted with SET SESSION AUTHORIZATION DEFAULT).
@@ -4393,27 +4388,24 @@ dumpNamespace(Archive *fout, NamespaceInfo *nspinfo)
 	 * users without CREATE SCHEMA privilege.  Further hacking has
 	 * to be applied for --no-owner mode, though!
 	 */
-	if (strcmp(nspinfo->dobj.name, "public") != 0)
-	{
-		appendPQExpBuffer(delq, "DROP SCHEMA %s;\n", qnspname);
+	appendPQExpBuffer(delq, "DROP SCHEMA %s;\n", qnspname);
 
-		appendPQExpBuffer(q, "CREATE SCHEMA %s AUTHORIZATION %s",
-						  qnspname, fmtId(nspinfo->usename));
+	appendPQExpBuffer(q, "CREATE SCHEMA %s AUTHORIZATION %s",
+					  qnspname, fmtId(nspinfo->usename));
 
-		/* Add tablespace qualifier, if not default */
-		if (strlen(nspinfo->nsptablespace) != 0)
-			appendPQExpBuffer(q, " TABLESPACE %s",
-							  fmtId(nspinfo->nsptablespace));
+	/* Add tablespace qualifier, if not default */
+	if (strlen(nspinfo->nsptablespace) != 0)
+		appendPQExpBuffer(q, " TABLESPACE %s",
+						  fmtId(nspinfo->nsptablespace));
 
-		appendPQExpBuffer(q, ";\n");
+	appendPQExpBuffer(q, ";\n");
 
-		ArchiveEntry(fout, nspinfo->dobj.catId, nspinfo->dobj.dumpId,
-					 nspinfo->dobj.name,
-					 NULL, "",
-					 false, "SCHEMA", q->data, delq->data, NULL,
-					 nspinfo->dobj.dependencies, nspinfo->dobj.nDeps,
-					 NULL, NULL);
-	}
+	ArchiveEntry(fout, nspinfo->dobj.catId, nspinfo->dobj.dumpId,
+				 nspinfo->dobj.name,
+				 NULL, strcmp(nspinfo->dobj.name, "public") == 0 ? nspinfo->usename : "",
+				 false, "SCHEMA", q->data, delq->data, NULL,
+				 nspinfo->dobj.dependencies, nspinfo->dobj.nDeps,
+				 NULL, NULL);
 
 	/* Dump Schema Comments */
 	resetPQExpBuffer(q);

src/bin/pg_dump/pg_dumpall.c

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  *
- * $PostgreSQL: pgsql/src/bin/pg_dump/pg_dumpall.c,v 1.44 2004/07/12 14:35:45 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/pg_dump/pg_dumpall.c,v 1.45 2004/07/19 21:39:48 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -44,7 +44,7 @@ static const char *progname;
 
 static void help(void);
 
-static void dumpUsers(PGconn *conn);
+static void dumpUsers(PGconn *conn, bool initdbonly);
 static void dumpGroups(PGconn *conn);
 static void dumpTablespaces(PGconn *conn);
 static void dumpCreateDB(PGconn *conn);
@@ -257,7 +257,7 @@ main(int argc, char *argv[])
 	if (disable_triggers)
 		appendPQExpBuffer(pgdumpopts, " -X disable-triggers");
 	if (use_setsessauth)
-		/* no-op, still allowed for compatibility */ ;
+		appendPQExpBuffer(pgdumpopts, " -X use-set-session-authorization");
 		
 	if (optind < argc)
 	{
@@ -279,18 +279,19 @@ main(int argc, char *argv[])
 
 	if (!data_only)
 	{
-		dumpUsers(conn);
+		/* Dump all users excluding the initdb user */
+		dumpUsers(conn, false);
 		dumpGroups(conn);
 		if (server_version >= 70500)
 			dumpTablespaces(conn);
+		if (!globals_only)
+			dumpCreateDB(conn);
+		/* Dump alter command for initdb user */
+		dumpUsers(conn, true);
 	}
 
 	if (!globals_only)
-	{
-		if (!data_only)
-			dumpCreateDB(conn);
 		dumpDatabases(conn);
-	}
 
 	PQfinish(conn);
 
@@ -310,26 +311,29 @@ help(void)
 	printf(_("Usage:\n"));
 	printf(_("  %s [OPTION]...\n"), progname);
 
-	printf(_("\nOptions:\n"));
+	printf(_("\nGeneral options:\n"));
+	printf(_("  -i, --ignore-version     proceed even when server version mismatches\n"
+			 "                           pg_dumpall version\n"));
+	printf(_("  --help                   show this help, then exit\n"));
+	printf(_("  --version                output version information, then exit\n"));
+	printf(_("\nOptions controlling the output content:\n"));
 	printf(_("  -a, --data-only          dump only the data, not the schema\n"));
 	printf(_("  -c, --clean              clean (drop) databases prior to create\n"));
 	printf(_("  -d, --inserts            dump data as INSERT, rather than COPY, commands\n"));
 	printf(_("  -D, --column-inserts     dump data as INSERT commands with column names\n"));
 	printf(_("  -g, --globals-only       dump only global objects, no databases\n"));
-	printf(_("  -i, --ignore-version     proceed even when server version mismatches\n"
-			 "                           pg_dumpall version\n"));
-	printf(_("  -s, --schema-only        dump only the schema, no data\n"));
-	printf(_("  -S, --superuser=NAME     specify the superuser user name to use in the dump\n"));
 	printf(_("  -o, --oids               include OIDs in dump\n"));
 	printf(_("  -O, --no-owner           do not output commands to set object ownership\n"));
-	printf(_("  -v, --verbose            verbose mode\n"));
+	printf(_("  -s, --schema-only        dump only the schema, no data\n"));
+	printf(_("  -S, --superuser=NAME     specify the superuser user name to use in the dump\n"));
 	printf(_("  -x, --no-privileges      do not dump privileges (grant/revoke)\n"));
 	printf(_("  -X disable-dollar-quoting, --disable-dollar-quoting\n"
 			 "                           disable dollar quoting, use SQL standard quoting\n"));
 	printf(_("  -X disable-triggers, --disable-triggers\n"
-			 "                           disable triggers during data-only restore\n"));
-	printf(_("  --help                   show this help, then exit\n"));
-	printf(_("  --version                output version information, then exit\n"));
+	         "                           disable triggers during data-only restore\n"));
+	printf(_("  -X use-set-session-authorization, --use-set-session-authorization\n"
+			 "                           use SESSION AUTHORIZATION commands instead of\n"
+			 "                           OWNER TO commands\n"));
 
 	printf(_("\nConnection options:\n"));
 	printf(_("  -h, --host=HOSTNAME      database server host or socket directory\n"));
@@ -344,39 +348,52 @@ help(void)
 
 
 /*
- * Dump users (but not the user created by initdb).
+ * Dump users
+ * Is able to dump all non initdb users or just the initdb user.
  */
 static void
-dumpUsers(PGconn *conn)
+dumpUsers(PGconn *conn, bool initdbonly)
 {
 	PGresult   *res;
 	int			i;
 
-	printf("--\n-- Users\n--\n\n");
-	printf("DELETE FROM pg_shadow WHERE usesysid <> (SELECT datdba FROM pg_database WHERE datname = 'template0');\n\n");
-
 	if (server_version >= 70100)
 		res = executeQuery(conn,
 						"SELECT usename, usesysid, passwd, usecreatedb, "
-						   "usesuper, valuntil "
-						   "FROM pg_shadow "
-						   "WHERE usesysid <> (SELECT datdba FROM pg_database WHERE datname = 'template0')");
+						   "usesuper, valuntil, "
+						   "(usesysid = (SELECT datdba FROM pg_database WHERE datname = 'template0')) AS clusterowner "
+						   "FROM pg_shadow");
 	else
 		res = executeQuery(conn,
 						"SELECT usename, usesysid, passwd, usecreatedb, "
-						   "usesuper, valuntil "
-						   "FROM pg_shadow "
-						   "WHERE usesysid <> (SELECT datdba FROM pg_database WHERE datname = 'template1')");
+						   "usesuper, valuntil, "
+						   "(usesysid = (SELECT datdba FROM pg_database WHERE datname = 'template1')) AS clusterowner "
+						   "FROM pg_shadow");
+
+	if (PQntuples(res) > 0 || (!initdbonly && output_clean))
+		printf("--\n-- Users\n--\n\n");
+	if (!initdbonly && output_clean)
+		printf("DELETE FROM pg_shadow WHERE usesysid <> (SELECT datdba FROM pg_database WHERE datname = 'template0');\n\n");
 
 	for (i = 0; i < PQntuples(res); i++)
 	{
-		PQExpBuffer buf = createPQExpBuffer();
 		const char *username;
-
+		bool clusterowner;
+		PQExpBuffer buf = createPQExpBuffer();
 		username = PQgetvalue(res, i, 0);
-		appendPQExpBuffer(buf, "CREATE USER %s WITH SYSID %s",
-						  fmtId(username),
-						  PQgetvalue(res, i, 1));
+		clusterowner = (strcmp(PQgetvalue(res, i, 6), "t") == 0);
+
+		/* Check which pass we're on */
+		if ((initdbonly && !clusterowner) || (!initdbonly && clusterowner)) continue;
+
+		/* Dump ALTER USER for the cluster owner and CREATE USER for all other users */
+		if (!clusterowner)
+			appendPQExpBuffer(buf, "CREATE USER %s WITH SYSID %s",
+							  fmtId(username),
+							  PQgetvalue(res, i, 1));
+		else
+			appendPQExpBuffer(buf, "ALTER USER %s WITH",
+							  fmtId(username));
 
 		if (!PQgetisnull(res, i, 2))
 		{
@@ -422,11 +439,13 @@ dumpGroups(PGconn *conn)
 	PGresult   *res;
 	int			i;
 
-	printf("--\n-- Groups\n--\n\n");
-	printf("DELETE FROM pg_group;\n\n");
-
 	res = executeQuery(conn, "SELECT groname, grosysid, grolist FROM pg_group");
 
+	if (PQntuples(res) > 0 || output_clean)
+		printf("--\n-- Groups\n--\n\n");
+	if (output_clean)
+		printf("DELETE FROM pg_group;\n\n");
+
 	for (i = 0; i < PQntuples(res); i++)
 	{
 		PQExpBuffer buf = createPQExpBuffer();
@@ -478,8 +497,6 @@ dumpTablespaces(PGconn *conn)
 	PGresult   *res;
 	int			i;
 
-	printf("--\n-- Tablespaces\n--\n\n");
-
 	/*
 	 * Get all tablespaces except built-in ones (which we assume are named
 	 * pg_xxx)
@@ -489,6 +506,9 @@ dumpTablespaces(PGconn *conn)
 					   "spclocation, spcacl "
 					   "FROM pg_catalog.pg_tablespace "
 					   "WHERE spcname NOT LIKE 'pg\\_%'");
+	
+	if (PQntuples(res) > 0)
+		printf("--\n-- Tablespaces\n--\n\n");
 
 	for (i = 0; i < PQntuples(res); i++)
 	{
@@ -758,7 +778,12 @@ makeAlterConfigCommand(const char *arrayitem, const char *type, const char *name
 	*pos = 0;
 	appendPQExpBuffer(buf, "ALTER %s %s ", type, fmtId(name));
 	appendPQExpBuffer(buf, "SET %s TO ", fmtId(mine));
-	appendStringLiteral(buf, pos + 1, false);
+	/* Some GUC variable names are 'LIST' type and hence must not be quoted. */
+	if (strcasecmp(mine, "DateStyle") == 0
+			|| strcasecmp(mine, "search_path") == 0)
+		appendPQExpBuffer(buf, "%s", pos + 1);
+	else 
+		appendStringLiteral(buf, pos + 1, false);
 	appendPQExpBuffer(buf, ";\n");
 
 	printf("%s", buf->data);